Open source blueteam projects
Every project in the registry tagged blueteam, ranked by real GitHub adoption.
SafeLine is a self-hosted WAF(Web Application Firewall) / reverse proxy to protect your web apps from attacks and exploits.
An Information Security Reference That Doesn't Suck; https://rmusser.net/git/admin-2/Infosec_Reference for non-MS Git hosted version.
HardeningKitty and Windows Hardening Settings
Real Intelligence Threat Analytics (RITA) is a framework for detecting command and control communication through network traffic analysis.
HardeningKitty - Checks and hardens your Windows configuration
Related tags
Frequently asked questions
How many open source blueteam projects are there?
This registry tracks 5 projects tagged blueteam, with 36,245 GitHub stars between them. The most-adopted is SafeLine at 23,154 stars.
Are these blueteam projects free to use?
Yes — 5 of the 5 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 blueteam 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 blueteam projects still maintained?
3 of the 5 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.