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sso.tax

A list of vendors that treat single sign-on as a luxury feature, not a core security requirement.

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What is The SSO Wall of Shame?

The SSO Wall of Shame is a website that tracks software vendors who charge extra for single sign-on (SSO), treating it as a premium add-on rather than a baseline security feature. The site's argument is straightforward: SSO lets a team log in once through a central identity provider (Okta, Google Workspace, Microsoft Entra, and similar) to reach every app, giving IT one place to onboard, offboard, and enforce strong authentication. Gating it behind an "Enterprise" tier bundled with unrelated features or high seat minimums, the site contends, pushes smaller companies toward weaker security because the secure option is unaffordable.

The site presents this mainly as a price-increase table. Each row names a vendor, a base plan price, the price once SSO is included, the resulting percentage increase, and a link to the vendor's own pricing page. According to the page, listed gaps range from modest (Adobe Acrobat Pro at 17%, BitWarden at 50%) to extreme (Appsmith at over 16,000%, Coursera at 2,400%). The site also has sections on "Price Increases" and "Quotes Required," the latter covering vendors who won't publish SSO pricing at all and require a sales conversation.

Who uses it

  • IT and security teams evaluating a vendor can check whether SSO is included before shortlisting, rather than discovering the gap during procurement.
  • Founders and finance leads at small companies can estimate the real cost of a "cheap" starter plan once SSO is added.
  • Procurement and compliance staff can use the table as a starting point for questions to send vendors.
  • Vendors themselves sometimes respond to being listed, which is part of the site's pressure tactic.

How to use it well

Treat the table as a lead, not a verdict. Prices and packaging change, and the listed dates show many entries are years old, so confirm current terms on the vendor's own pricing page before making a decision. A large percentage increase can still mean a small absolute cost if the base price is low, and vice versa. Ask two questions of any vendor: is SSO available on every plan, and does enabling it force a seat minimum or a bundle of features you don't need? For a concrete example, a 20-person startup comparing two $10-per-user tools should compare the SSO-inclusive totals, not the headline starter prices — a jump to $60 per user changes the annual bill by roughly $12,000, which may decide the choice on its own.

For identity-provider context, see Okta and Google Workspace.

Which vendors are listed on the SSO Wall of Shame and what are their SSO pricing increases?

The SSO Wall of Shame lists software vendors that gate single sign-on behind higher-priced "Enterprise" tiers, then shows the resulting price jump. The page's Price Increases table gives a base price, an SSO price and a percentage increase for each vendor, with a source link and an update date.

Vendors and increases shown on the page

Vendor Base pricing SSO pricing Increase
Appsmith $15 per user/month $2,500 16,567%
Coursera $1,995 per year $49,875 per year 2,400%
Breezy HR $171 per month $1,500 per month 777%
Airtable $10 per user/month $60 per user/month 500%
Canva $10 per user/month $40 per user/month 300%
Cypress.io $75 per month $300 per month 300%
Box $5 per user/month $15 per user/month 200%
Bitrise $90 $270 200%
Clockify $3.99 per user/month $11.99 per user/month 201%
Copper CRM $49 per user/month $119 per user/month 143%
Asana $25 per user/month $60 per user/month 140%
Calendly $12 per user/month $25 per user/month 108%
Adobe Creative Cloud $84.99 $140.99 66%
Balsamiq Wireframes $9 per month $14 per month 56%
Atlassian (Jira Cloud) $7.75 per user/month $11.75 per user/month 51%
BitWarden $4 per user/month $6 per user/month 50%
Adobe Acrobat Pro $23.99 $27.99 17%

The page also has sections headed "Quotes Required" and "FAQs," and the list continues beyond the excerpt shown here, so treat the table above as the visible portion rather than a complete inventory.

How to use this as a buyer

The percentage column is the useful part, but check the unit before comparing vendors: some figures are per user per month, some are flat monthly fees, and some are annual totals. A 16,567% jump and a 17% jump are not the same kind of problem, and a flat-fee increase can be small or large depending on team size.

For a practical next step, take your own seat count and calculate the annual cost of the base plan versus the cheapest plan that includes SSO. If the gap is more than you would pay for a dedicated identity provider, that is a signal to negotiate, or to look at alternatives. For general background on why SSO is treated as a baseline control rather than a premium add-on, see The SSO Wall of Shame.

How does The SSO Wall of Shame determine if a vendor is shaming?

The site’s test is practical rather than moral: a vendor lands on the list when single sign-on is treated as an add-on tied to a much more expensive plan, rather than as part of the core product. The page frames SSO as a baseline security requirement for any company with more than five employees, then tracks vendors whose SSO pricing forces a large jump from the standard plan.

Its method appears to be:

  • Identify the vendor’s base plan and SSO plan. The table compares ordinary per-user or per-month pricing with the plan that includes SSO.
  • Calculate the increase. The “Increase” column shows the percentage difference, such as 140%, 500% or several thousand percent.
  • Flag the pattern, not just the price. The objection is to SSO being bundled with unrelated “Enterprise” features or minimum seat counts, which makes smaller teams pay far more for security.
  • Record the source and date. Each entry links to the vendor’s pricing page and notes when it was updated, so the list reflects a specific pricing snapshot rather than a permanent claim.
  • Separate price increases from other tactics. The page also has “Quotes Required,” covering vendors that hide SSO pricing behind a sales conversation rather than publishing it.

A useful way to apply the same test to a vendor you are considering is to compare the cheapest plan you would otherwise buy with the cheapest plan that includes SSO. If the only difference is SSO plus features you do not need, and the price multiplies, the vendor is following the pattern the site criticises. If SSO is included at every tier, or sold as a modest add-on, it would not qualify.

For a concrete example from the page’s table, Airtable is listed at $10 per user per month for its base pricing and $60 per user per month with SSO, a 500% increase. That does not automatically mean Airtable is a bad choice; it means a small team should decide whether the higher tier’s other features justify the jump, or whether an alternative with SSO in the standard plan fits better. For broader context on identity and security expectations, Okta and Google are relevant references, since the page itself uses Okta and Google logins as everyday examples of SSO.

What are the alternatives for companies that cannot afford SSO on their current plans?

For a company priced out of SSO on a given vendor's top tier, the workable alternatives fall into three buckets: switch to a vendor that includes SSO at a lower tier, keep the tool but centralize identity around it, or broker SSO yourself with an identity provider that supports per-app provisioning.

Switch to a vendor with SSO in cheaper plans. The most direct fix is treating SSO as a purchasing criterion rather than an upgrade. When you compare tools, ask whether SSO is on every paid plan or only on a quote-only "Enterprise" tier, and whether the SSO tier also forces a minimum seat count. The SSO Wall of Shame exists precisely to make that comparison quick: it lists vendors whose SSO sits behind a large price jump, with the base price, SSO price and the percentage increase. A 50–100% jump may be tolerable for a small team; a 500%+ jump usually means the tool is not the right fit at your size.

Keep the tool, but move identity to the perimeter. If you cannot buy SSO inside an app, you can still get much of the security benefit by:

  • Requiring long, unique passwords stored in a team password manager, so offboarding is one action rather than many.
  • Enforcing multi-factor authentication at the identity provider and at the app where the app supports it natively.
  • Using your identity provider's browser extension or app catalog to launch and pre-fill credentials, which gives IT a single place to revoke access.
  • Auditing seats quarterly so you are not paying for dormant accounts that widen the attack surface.

Broker SSO yourself. Some identity providers can act as the SSO front door for apps that lack native SAML or OIDC support, using password vaulting or a gateway. This is a real trade-off: you gain centralized login and logging, but you take on the operational burden of maintaining the integration, and the app vendor may not support the resulting setup. It suits teams with an existing identity provider and someone to own it, not a five-person company with no IT staff.

A concrete decision path. Suppose a 20-person team is quoted an enterprise tier for a project tool. First, check the size of the jump on the wall of shame. If it is modest and the enterprise tier includes features you would use anyway, the upgrade may be cheaper than migrating. If the jump is large, shortlist two alternatives that include SSO on their standard paid plan, run a one-month pilot with your identity provider, and only then decide. The criterion is total cost of secure access, not the sticker price of SSO alone.

For a broader market view of how identity is handled across vendors, Okta and Auth0 publish integration catalogs worth checking before you commit.

How can I submit a vendor to The SSO Wall of Shame?

The site doesn't publish a submission form or a listed contact address in the material provided, so the most reliable route is to reach the maintainer through the site itself. Visit The SSO Wall of Shame and look for a contact link, repository link, or contributor note in the page footer or header; projects like this are commonly maintained in the open, where issues and pull requests are the intended channel.

If you find a repository or issue tracker, a useful submission includes:

  • Vendor name and product, exactly as it appears on the pricing page.
  • Base plan price and the cheapest plan that includes SSO, with the billing unit (per user per month, per month, per year).
  • A link to the vendor's own pricing page showing both, plus the date you checked it.
  • Any minimum seat count, annual commitment, or bundled "Enterprise" tier that effectively raises the real cost.
  • A short note on why it matters — for example, a 10-person team forced onto a 25-seat minimum.

Two practical cautions. First, vendors change pricing often, so a submission with an undated screenshot or a stale link is likely to be rejected or corrected; re-check the live page on the day you send it. Second, if the vendor has since added SSO to lower tiers, say so — the list is more credible when it reflects current terms rather than a grievance.

As a decision criterion: submit when you can point to a public pricing page that shows SSO gated behind a higher tier or a seat minimum. If SSO is merely expensive but available on a self-serve plan, that's a weaker case, and the maintainer may treat it differently.

What are the common pricing models for SSO across different vendors?

The dominant pattern is SSO as an upgrade trigger: vendors include it only in a higher tier, then price that tier around a bundle of enterprise features rather than around SSO itself. The site's evidence shows this in several recurring shapes.

Common SSO pricing models

Model How it works Typical effect
Enterprise tier bundle SSO is one feature in a top plan alongside audit logs, SCIM, admin controls Large effective price jump, often 2–10x
Per-user SSO add-on A separate line item on top of the base plan Predictable but scales with headcount
Seat minimum SSO requires buying 25, 50 or more seats Punishes small teams most
Flat platform fee A fixed annual or monthly charge for SSO Cheaper for large teams, steep for tiny ones
Included in all plans SSO is treated as a baseline security feature Rare; the site's stated ideal

The site's own table illustrates the spread: increases range from roughly 17% (Adobe Acrobat Pro) to several hundred percent (Airtable, Canva, Bitrise, Box) and into the thousands for low-cost base plans (Appsmith, Coursera). Breezy HR and Cypress.io show the flat-fee variant, where a jump from a low monthly base to a much higher tier dwarfs any per-user logic.

Why vendors do this

For the vendor, SSO is cheap to run but expensive to support, because every customer's identity provider behaves differently. Gating it behind Enterprise pricing pushes that support cost onto the customers who need it most, and the bundle hides the real SSO price inside features a small team may not want.

What to check before you buy

  • Your actual seat count. A per-user SSO add-on at 10 seats can cost less than an enterprise tier with a 25-seat minimum; at 200 seats the reverse is often true.
  • What else is in the tier. If you would buy the audit logs and admin controls anyway, the SSO premium is smaller than it looks.
  • Whether SSO is needed at all. The site argues it is a core requirement above roughly five employees, since it centralises onboarding, offboarding, logging and strong authentication.
  • Contract flexibility. Annual-only SSO pricing changes the maths versus monthly billing.

A practical next step: list your current tools, note each one's base price and SSO tier price, and calculate the annual delta at your real headcount. That number, not the headline percentage, is your decision input. If a vendor's SSO premium exceeds what you would pay for a standalone identity provider, that is a signal to negotiate or switch.

Related questions

More questions →
What Is sso.tax?

sso.tax is a public list of software vendors that treat single sign-on (SSO) as a premium "Enterprise" feature rather than a baseline security requirement. It documents how much more you pay when SSO is gated behind a higher tier, and it exists to pressure vendors into including SSO in all plans or charging a reasonable amount for it. It's most useful if you're an IT or security lead evaluating vendors, or a founder trying to budget for SSO without jumping to an enterprise contract.

What the site actually tracks

The core of the site is a table of vendors with four data points per row:

  • Vendor — the product being evaluated.
  • Base Pricing — the cost of the plan most teams would otherwise choose.
  • SSO Pricing — the cost of the tier that unlocks SSO.
  • Increase — the percentage jump between the two, plus a source link and an "Updated" date.

The site also has sections for Price Increases and Quotes Required, and an FAQs section. "Quotes Required" matters because some vendors don't publish SSO pricing at all, which makes comparison harder and negotiation less transparent.

Why the percentage column is the point

The headline number is the multiplier, not the absolute price. A few examples from the site's table:

Vendor Base Pricing SSO Pricing Increase
Airtable $10 per u/m $60 per u/m 500%
Canva $10 per u/m $40 per u/m 300%
Box $5 per u/m $15 per u/m 200%
Asana $25 per u/m $60 per u/m 140%
Atlassian (Jira Cloud) $7.75 per u/m $11.75 per u/m 51%
BitWarden $4 per u/m $6 per u/m 50%

The site's own framing is that this "can inflate the cost by 3x, 5x, 10x, or more, forcing smaller companies to choose between a secure environment and an affordable budget." That trade-off is the thing the list is designed to make visible.

The argument behind the list

The site's stated position is that SSO is a core security requirement for any company with more than five employees. Its reasoning, in its own words:

  • For users, SSO means one password (and maybe a security key) gets them everywhere.
  • For IT and security teams, SSO is a single place to onboard, manage, and offboard users, and to centralize strong authentication, logging, and account recovery.
  • For vendors, SSO shifts responsibility for exotic authentication requirements onto the SSO provider instead of the vendor.

From that, the site argues that gating SSO behind an "Enterprise" paywall — often bundled with unnecessary features or large minimum seat counts — "punishes growing businesses and encourages dangerous security shortcuts."

How to use it when you're evaluating a vendor

  1. Find the vendor in the table and note the Base Pricing and SSO Pricing columns.
  2. Check the Updated date. Pricing changes; a row from 2019 may no longer reflect current plans.
  3. Follow the source link to confirm the current numbers on the vendor's own pricing page before you rely on them.
  4. If the vendor appears under Quotes Required, treat SSO cost as unknown until you get a written quote — don't assume it's included.
  5. Compare the increase against your seat count, since a per-user-per-month jump compounds with team size.

What to keep in mind

  • The list is a snapshot with dates attached, not a live price feed. Always verify against the vendor's pricing page.
  • A high percentage doesn't automatically mean a bad deal — a small absolute increase on a cheap plan can be fine. The percentage is a signal, not a verdict.
  • The site's threshold claim ("more than five employees") is its own editorial position, not a formal standard.
  • Absence from the list isn't proof a vendor includes SSO in every plan; it may just mean the site hasn't catalogued it.
Why Is Single Sign-On (SSO) Considered a Core Security Requirement?

Single sign-on (SSO) is considered a core security requirement because it gives IT and security teams one place to onboard, manage, and offboard users, and to centralize controls like strong authentication, logging, and account recovery. According to sso.tax, SSO is a core security requirement for any company with more than five employees. That threshold matters: once a team is large enough that people share tools and turnover happens, managing access account-by-account stops being practical and starts being a risk.

What SSO actually does

SSO is the mechanism behind "log in once, access everything." If you have ever used Okta, Google, or a social account to sign into another website, you have used SSO.

For users, it is convenient: one password, one time, maybe a security key, gets you everywhere. It is quick and requires little thought.

For IT and security teams, the value is different in kind, not just degree. A modern company uses dozens, if not hundreds, of software vendors. SSO provides:

  • A single place to onboard, manage, and offboard users — when someone joins or leaves, access is changed in one system rather than across every vendor.
  • Centralized security controls — strong authentication, logging, and account recovery all live in one place instead of being reimplemented per app.

For software vendors, SSO also shifts responsibility: if a customer demands a new hardware authenticator, the vendor does not have to build support for it — that is the SSO provider's job.

Why "core" is the right word

The argument is not that SSO is a nice feature. It is that the alternative — per-app passwords and per-app user management — does not scale past a small team, and the failure modes are security failures: orphaned accounts, weak or reused credentials, and no central log of who accessed what.

sso.tax frames this directly: SSO is a core security requirement for any company with more than five employees. Below that size, manual account management may be tolerable. Above it, the company is choosing between a secure environment and an affordable budget if SSO is paywalled.

The pricing problem sso.tax documents

Some vendors exploit the fact that SSO is a requirement. They offer competitive starter plans and gate SSO behind an "Enterprise" paywall, bundled with unnecessary features or large minimum seat counts. According to sso.tax, this can inflate cost by 3x, 5x, 10x, or more.

The site's own guidance is a useful test: if a company claims to "take your security seriously," SSO should be included in all plans or available for a reasonable charge.

Examples from the sso.tax price-increase table

The table lists base pricing versus SSO pricing, the resulting increase, and the date the entry was updated. A sample:

Vendor Base Pricing SSO Pricing Increase Updated
Adobe Acrobat Pro $23.99 $27.99 17% 2023-07-18
Adobe Creative Cloud $84.99 $140.99 66% 2023-07-18
Airtable $10 per u/m $60 per u/m 500% 2019-10-19
Appsmith $15 per u/m $2500 16567% 2025-06-04
Asana $25 per u/m $60 per u/m 140% 2020-12-09
Atlassian (Jira Cloud) $7.75 per u/m $11.75 per u/m 51% 2023-09-22
Balsamiq Wireframes $9 per month $14 per month 56% 2024-07-28
Bitrise $90 $270 200% 2019-06-25
BitWarden $4 per u/m $6 per u/m 50% 2024-08-28
Box $5 per u/m $15 per u/m 200% 2018-10-17
Breezy HR $171 per month $1500 per month 777% 2023-10-15
Calendly $12 per u/m $25 per u/m 108% 2022-03-03
Canva $10 per u/m $40 per u/m 300% 2024-06-17
Clockify $3.99 per u/m $11.99 per u/m 201% 2021-03-17
Copper CRM $49 per u/m $119 per u/m 143% 2019-07-31
Coursera $1995 per year $49875 per year 2400% 2023-10-22
Cypress.io $75 per month $300 per month 300% 2023-10-31

The pattern is the point: the same product, the same security control, priced as a luxury rather than a baseline. The site also flags "Quotes Required" as a separate category, meaning some vendors do not publish SSO pricing at all.

How to use this when evaluating a vendor

  1. Find the vendor's SSO pricing — check the pricing page linked from sso.tax if the vendor is listed.
  2. Compare it against the base plan, not against the vendor's "Enterprise" bundle as a whole. The relevant number is the increase, as shown in the table.
  3. Check whether SSO is bundled with features you do not need or a minimum seat count you cannot meet.
  4. Apply the sso.tax test: is SSO included in all plans, or available for a reasonable charge? If not, the vendor is treating a core security requirement as an upsell.

For a company with more than five employees, that last question is the deciding one — the cost of the SSO tier is the cost of doing business securely with that vendor.

How Vendors Exploit SSO Pricing and What It Costs You

SSO is a core security requirement for any company with more than five employees, yet many vendors gate it behind an "Enterprise" paywall bundled with unnecessary features or large minimum seat counts. According to sso.tax, this can inflate costs by 3x, 5x, 10x, or more — forcing smaller companies to choose between a secure environment and an affordable budget. The table below shows real examples of that markup.

The Mechanism: How SSO Gets Gated

The pattern sso.tax documents is consistent across vendors:

  • Competitive starter plans draw teams in at a low per-user price.
  • SSO sits behind an "Enterprise" tier, often bundled with features a small team doesn't need.
  • Minimum seat counts or flat enterprise fees push the real cost far beyond the sticker price.

For users, SSO is convenient — one password, one login, access everywhere. For IT and security teams, it's the single place to onboard, manage, and offboard users, and to centralize strong authentication, logging, and account recovery. Vendors know this, and some price accordingly.

What the Markup Looks Like

sso.tax tracks base pricing versus SSO pricing with the percentage increase and the date the data was updated:

Vendor Base Pricing SSO Pricing Increase Updated
Airtable $10 per u/m $60 per u/m 500% 2019-10-19
Appsmith $15 per u/m $2,500 16,567% 2025-06-04
Asana $25 per u/m $60 per u/m 140% 2020-12-09
Atlassian (Jira Cloud) $7.75 per u/m $11.75 per u/m 51% 2023-09-22
Bitrise $90 $270 200% 2019-06-25
BitWarden $4 per u/m $6 per u/m 50% 2024-08-28
Box $5 per u/m $15 per u/m 200% 2018-10-17
Breezy HR $171 per month $1,500 per month 777% 2023-10-15
Calendly $12 per u/m $25 per u/m 108% 2022-03-03
Canva $10 per u/m $40 per u/m 300% 2024-06-17
Clockify $3.99 per u/m $11.99 per u/m 201% 2021-03-17
Copper CRM $49 per u/m $119 per u/m 143% 2019-07-31
Coursera $1,995 per year $49,875 per year 2,400% 2023-10-22
Cypress.io $75 per month $300 per month 300% 2023-10-31
Adobe Acrobat Pro $23.99 $27.99 17% 2023-07-18
Adobe Creative Cloud $84.99 $140.99 66% 2023-07-18
Balsamiq Wireframes $9 per month $14 per month 56% 2024-07-28

The range is wide — from a 17% bump on Adobe Acrobat Pro to a 16,567% jump on Appsmith — but the direction is the same: SSO is treated as a luxury add-on rather than a baseline control.

Why This Hurts Growing Businesses

The pricing strategy punishes exactly the companies that need SSO most. A team of 10–50 people has real onboarding and offboarding needs but can't absorb enterprise-tier pricing. The result, as sso.tax puts it, is that smaller companies are forced to choose between a secure environment and an affordable budget — and that choice encourages dangerous security shortcuts.

The site's own standard for judging vendors is simple: if a company claims to "take your security seriously," SSO should be included in all plans or available for a reasonable charge.

What to Check Before You Buy

When evaluating a vendor, look past the starter-plan price:

  1. Find the SSO tier. Is SSO on the entry plan, or does it require an upgrade?
  2. Check for minimum seat counts. A low per-user SSO price can still mean a large minimum commitment.
  3. Separate SSO from the bundle. If SSO only comes with features you don't need, price the whole tier, not just SSO.
  4. Compare against the base plan. The percentage increase — not the absolute price — tells you how much of a premium the vendor places on security.

sso.tax maintains the full list, including a "Price Increases" table and a "Quotes Required" section for vendors that don't publish SSO pricing publicly.

What Are Some Examples of SSO Price Increases Listed on sso.tax?

sso.tax tracks vendors that gate single sign-on behind higher-priced plans, and its "Price Increases" table lists the base price, the SSO price, the resulting increase, and the date the entry was updated. The examples below come directly from that table. The pattern is consistent: SSO is bundled into an enterprise tier, and the jump from the base plan ranges from roughly 17% to over 16,000%.

Examples from the sso.tax price increase table

Vendor Base pricing SSO pricing Increase Updated
Adobe Acrobat Pro $23.99 $27.99 17% 2023-07-18
Adobe Creative Cloud $84.99 $140.99 66% 2023-07-18
Airtable $10 per u/m $60 per u/m 500% 2019-10-19
Appsmith $15 per u/m $2500 16567% 2025-06-04
Asana $25 per u/m $60 per u/m 140% 2020-12-09
Atlassian (Jira Cloud) $7.75 per u/m $11.75 per u/m 51% 2023-09-22
Balsamiq Wireframes $9 per month $14 per month 56% 2024-07-28
Bitrise $90 $270 200% 2019-06-25
BitWarden $4 per u/m $6 per u/m 50% 2024-08-28
Box $5 per u/m $15 per u/m 200% 2018-10-17
Breezy HR $171 per month $1500 per month 777% 2023-10-15
Calendly $12 per u/m $25 per u/m 108% 2022-03-03
Canva $10 per u/m $40 per u/m 300% 2024-06-17
Clockify $3.99 per u/m $11.99 per u/m 201% 2021-03-17
Copper CRM $49 per u/m $119 per u/m 143% 2019-07-31
Coursera $1995 per year $49875 per year 2400% 2023-10-22
Cypress.io $75 per month $300 per month 300% 2023-10-31

"u/m" means per user per month. Each row links to the vendor's own pricing page, so the figures can be checked against the source.

What the numbers show

The smallest gap in the table is Adobe Acrobat Pro at 17%, and the largest is Appsmith at 16,567%. Several entries sit in the 100–300% range, meaning SSO costs two to four times the base plan. The table also spans update dates from 2018 to 2025, so it reflects pricing at the time each entry was recorded rather than a single snapshot.

According to sso.tax, vendors often pair a competitive starter plan with SSO locked inside an "Enterprise" tier that also bundles unnecessary features or large minimum seat counts. The site states this can inflate cost by 3x, 5x, 10x, or more, and that SSO should be included in all plans or available for a reasonable charge for any company with more than five employees.

How to use this

If you are evaluating a vendor, compare its base plan against the tier that includes SSO using the same units shown here (per user per month, per month, or per year). The table's "Source" links go to each vendor's pricing page, so verify current numbers there before deciding, since listed prices and update dates may not reflect the latest changes.

Website Overview

Identifiable technologies and additional version or configuration signals make the service easier to fingerprint, which may help targeted scanners narrow their checks. An established domain and managed infrastructure suggest continuity of operations and may support dependable delivery, although neither guarantees service quality.

Domain and Registration

Registered in 2018, this domain has about 8 years of history. That suggests continuity, although ownership and purpose may have changed. Transfer-protection status is present, helping reduce the risk of unauthorized domain transfers. The registrar is Porkbun LLC, a widely used domain service provider. The domain uses the common .tax extension, which is not an independent safety signal.

DNS and Email

Nameservers are provided by Cloudflare, indicating managed DNS hosting. No CNAME was found; the observed records resolve directly to addresses. No MX record was found. A conventional explicit inbound-mail route is not configured. TXT records include verification markers for Google. Such markers may also remain after a service stops being used. DNSSEC signatures were not detected, so this additional DNS authenticity protection is not confirmed.

TLS and Certificates

The certificate uses an RSA 2048-bit public key, offering broad client compatibility. The server supplied a complete certificate chain. No organization name is present in the certificate; the available fields are consistent with domain validation. The certificate was issued by Let's Encrypt, commonly associated with automated certificate services. The certificate's total validity is about 89 days, consistent with a short renewal cycle.

HTTP and Browser Security

The checked browser-security headers were not detected, leaving fewer explicit browser-side safeguards. CORS permits any origin to read this response. This is common for public resources; sensitive responses need narrower handling. No X-Powered-By header was found, reducing one common source of backend fingerprinting information. The x-cache, x-served-by, via response header indicates a CDN or caching proxy in the delivery path. No obvious internal addresses or debug information were found in the headers.

Technology Stack Analysis

The public page identifies Jekyll 3.10.0, Fastly, with exact versions exposed for 1 technologies. These details can narrow vulnerability checks, although exposure alone is not a vulnerability.

Search and Social Sharing

The title has 121 characters and may be truncated in search results. The Generator tag identifies Jekyll v3.10.0, making the publishing system easier to fingerprint. Open Graph is partially configured; og:image is missing. Twitter Card metadata is configured. A meta description is present, with 97 characters.

Hosting and Email

DNSCloudflare
HostingFastly
EmailUnknown
Approximate IP geolocation (inferred; a CDN or proxy may differ from the origin server) United States flagUnited States Inferred 185.199.108.153

Registration details

RDAP / WHOIS

RegistrarPorkbun LLC
Registered2018-10-19
Expires2026-10-19
Domain statusclient delete prohibited、client transfer prohibited
Nameserversmolly.ns.cloudflare.com、rocky.ns.cloudflare.com
DNSSECunsigned

DNS records

DNS

TypeNameValueTTLPriority
Asso.tax185.199.108.153120—
Asso.tax185.199.109.153120—
Asso.tax185.199.110.153120—
Asso.tax185.199.111.153120—
NSsso.taxmolly.ns.cloudflare.com86400—
NSsso.taxrocky.ns.cloudflare.com86400—
TXTsso.taxgoogle-site-verification=7OGWKoHBMZJbyPyf5s6yrpXfNyS2V65dhpF1E7GZTBM3600—

TLS and certificates

TLS / SSL

AssessmentNormal configuration
Supported protocolsTLSv1.2、TLSv1.3
Negotiated protocolTLSv1.3
Certificate subjectsso.tax
IssuerLet's Encrypt
Valid until2026-12-17T05:41 · Remaining when checked: 71 days
Verification detailsCertificate trust: Passed · Hostname match: Passed

HTTP response headers

HTTP

HeaderValue
content-typetext/html; charset=utf-8
cache-controlmax-age=600
serverGitHub.com
access-control-allow-origin*

Identified technologies

Jekyll 3.10.0Fastly

Pages, Search and Sharing

Meta descriptionA list of vendors that treat single sign-on as a luxury feature, not a core security requirement.
Canonical URLhttps://sso.tax/
LanguageEnglish (default)
Twitter Cardsummary

No robots.txt found

No sitemaps found

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