How can developers distribute software with Zero Install?

Updated

Developers distribute software with Zero Install by creating one package that works across multiple platforms and publishing it on any static web host. There is no central repository or approval process to go through, so you keep control of the release. The trade-off is that you are responsible for hosting the package files and for signing them, since Zero Install checks digital signatures before running new software.

What a Zero Install package actually is

Zero Install is a decentralised cross-platform software installation system that works on Linux, Windows and macOS. It is fully open source. Instead of downloading an installer that copies files into system locations, Zero Install resolves a package's dependencies and runs the application from a cache, which is why apps can start with a single click without being installed first.

For a publisher, the practical consequence is that your "package" is a set of metadata plus the software itself, described in a way Zero Install can resolve. The site states you can create one package that works on multiple platforms, with dependency handling and automatic updates built in.

Publishing to any static web host

The distribution model is the part most developers care about:

  • No central point of control. You publish on any static web host. There is no store to submit to and no gatekeeper deciding whether your software is listed.
  • One package, multiple platforms. The same package can serve Linux, Windows and macOS users rather than requiring separate distribution channels per OS.
  • Dependency handling and automatic updates are part of the system, so you do not have to build a separate updater.

Because hosting is just a static web host, the requirements on your side are modest: somewhere to serve files over HTTP(S), and a stable URL for the package metadata. The site does not specify a required host, account or paid tier, so treat host choice as your own decision rather than something Zero Install mandates.

Security expectations for publishers

Security is central to how Zero Install operates, and this shapes what you must do as a distributor:

  • Installing an app does not grant it administrator access.
  • Digital signatures are always checked before new software is run.
  • Apps can share libraries without having to trust each other.

The signature requirement is the one that most directly affects publishing: users will not run your software unless the signature checks out, so signing your releases is not optional. The site does not document the specific signing tooling or key formats in the material available here, so check the documentation for the exact procedure before your first release.

What decentralisation means for you as a publisher

Aspect What it means in practice
Control You decide what is published and when; no central authority approves or removes it
Reach One package can target Linux, Windows and macOS users
Maintenance Dependency handling and automatic updates are handled by the system
Responsibility You host the files and sign the software; there is no central fallback if your host goes down

The main trade-off is visibility versus autonomy. A central store may bring discovery, but it also brings review and a single point of control. Zero Install gives you the opposite: anyone can distribute software, and you publish wherever you like.

Practical starting points

  1. Read the documentation on the Zero Install site to learn the package format and signing requirements.
  2. Build one package intended to work across the platforms you support.
  3. Sign the release, since signatures are checked before software runs.
  4. Publish the package and its files on a static web host you control.
  5. Verify by running the app through Zero Install on each target platform, and confirm that updates and dependencies resolve as expected.

If you want a concrete first task: take an application you already ship, describe it as a single Zero Install package, host it on a static site, and confirm a user on a different platform can launch it with one click without an install step.