Open source compression projects
Every project in the registry tagged compression, ranked by real GitHub adoption.
Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Li
Bichon – A lightweight, high-performance Rust email archiver with WebUI
Compressed Log Processor (CLP) is a free log management tool capable of compressing logs and searching the compressed logs without decompression.
Frequently asked questions
How many open source compression projects are there?
This registry tracks 3 projects tagged compression, with 75,854 GitHub stars between them. The most-adopted is headroom at 72,811 stars.
Are these compression projects free to use?
Yes — 3 of the 3 carry an explicit open-source licence across 2 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which compression project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these compression projects still maintained?
3 of the 3 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.