# Gap (open-source science and GIS app)

> Gap is a free, open-source science and GIS app for Windows, macOS and Linux. Main development repository for GAP - Groups, Algorithms, Programming, a System for Computational Discrete Algebra. It has 1,013 GitHub stars and is released under the GPL-2.0 license.

GAP is a system for computational discrete algebra, with particular emphasis on computational group theory. GAP provides a programming language, a library of thousands of functions implementing algebraic algorithms written in the GAP language as well as large data libraries of algebraic objects. For some more information, see. For a description of the mathematical capabilities, see.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/gap-system/gap |
| Platforms | Linux, macOS, Windows |
| Interface | desktop GUI |
| GitHub stars | 1,013 |
| License | GPL-2.0 (open source) |
| Replaces | n/a |
| Language | GAP |
| Website | https://www.gap-system.org |
| Official | yes (published by the project behind the app) |
| Category | Science, GIS & engineering |
| Latest release | v4.16.1 (Aug 23, 2026) |
| Last commit | Oct 8, 2026 |

## Install

Download a build for your system from the project's releases (https://github.com/gap-system/gap/releases) or website, or build it from source by following the README.

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