From Gambit wiki

The Snow package system

Snow is a package management system for R4RS and R5RS Scheme. Nearly all Snow packages run on Gambit. Users can simply download and install existing packages. For those who want to develop new packages, Snow has its own documentation.

Black Hole module system

Black Hole is a module system for incremental development and easily sharing code. It is bundled with a set of general purpose libraries, including several popular SRFIs.


Spheres - A set of tools and libraries for real-life Scheme. Multiplatform and Mobile. Based on Snow2 and R7RS libraries. Check out the code or visit the project page.

Dumping grounds

There is an informal listing of Gambit libraries and code samples on the Dumping Grounds.