Zero Install 2.28.3

Zero Install: Decentralized, Portable Software Distribution for Linux, Windows, and macOS

Zero Install (0install) is an open source, cross-platform software distribution system that lets you run applications without traditional installation. Designed for developers, sysadmins, and power users, it provides a portable, decentralized alternative to package managers and app stores — enabling single-click runs, command-line control, and secure, repeatable deployments across Linux, Windows, and macOS.

How Zero Install Works

• Run without installing: Launch applications from the web, USB drives, network shares, or local caches without modifying the host system or requiring admin privileges.
• Cross-platform packaging: Create one package that runs on multiple operating systems and architectures, simplifying distribution for software authors.
• Decentralised distribution: Publish on any static web host or mirror. There is no central store — catalogs and feeds are fetched from distributed sources.
• Command-line and GUI: Use a graphical store for one-click execution or the CLI for scripting and automation, giving flexibility for different workflows.

Dependency Management and Sharing

• Automatic dependency handling: Zero Install resolves libraries and runtimes on demand and shares common components between apps to save bandwidth and storage.
• Library mode: Applications can reuse verified libraries without requiring mutual trust, reducing duplication while maintaining isolation.
• Version mixing: Run stable and experimental versions side-by-side on the same machine without conflicts.

Security and Trust

• Digital signatures: All new software is verified with signatures before execution to ensure integrity and provenance.
• No elevated privileges: Installing or running apps does not automatically grant administrator access, reducing attack surface.
• Sandboxing and verification: Designed to limit what apps can change on the system and to make installations transparent to the user.

Updates, Mirrors, and Reliability

• Automatic updates: Built-in mechanisms check for newer releases and update deployed components while respecting publisher-provided constraints.
• Mirror-friendly: Catalogs can be mirrored across networks to improve availability and speed, avoiding single points of failure.
• Resilient fetching: Zero Install tolerates network variability and works well from varied hosts including offline or constrained environments.

Who Should Use Zero Install

1. Developers and maintainers who need to distribute cross-platform binaries without building platform-specific installers.
2. IT professionals and sysadmins who want to control software deployment without granting elevated privileges or changing system state.
3. Power users and portable-computing scenarios where running apps from USB, portable drives, or network shares is essential.

Practical Benefits

• Faster testing and onboarding: Try applications immediately without long install cycles or system configuration.
• Reduced system clutter: Avoid leftover files and registry changes that typical installers create.
• Greater reproducibility: Exact versions and dependencies are described in feeds, improving repeatable setups for teams and CI systems.
• Open source ecosystem: Transparent code and community-driven updates accelerate security fixes and feature improvements.

Getting Started

• Install clients: Download platform-specific clients (Linux, Windows, macOS) from the official get.0install.net site or package repositories.
• Explore apps: Use the graphical store or discover feeds and catalogs to run available applications with a click or a single command.
• Publish easily: Authors can publish by providing simple XML feeds on any static host; no central approval process is required.

Recent Activity and Maintenance

• Active development: Regular Windows releases (2.25.x, 2.26.x series) and ongoing maintenance reflect a project with current bug fixes and improvements such as improved error handling, proxy authentication, Kerberos support for private sync servers, and better auditing.
• Community contributions: Open source governance and public repositories enable transparent change tracking and rapid response to issues.