0install 

Zero Install management of on-disk caches, signature verification, etc.

Zero Install core services like solving dependencies, downloading implementations and execution selections

Utilities for creating and modifying Zero Install feed files

Microsoft.Deployment.*.dll libraries extracted from WiX Toolset. Useful for extracting .cab and .msi files.

Zero Install interfaces/abstractions for types from ZeroInstall.Services package

Zero Install methods for integrating applications with desktop environments (creating menu entries, etc.).

Command-line interface for Zero Install (both an actual CLI and a library for building other clients)

Zero Install data model for the feed format