Open source firewall projects
Every project in the registry tagged firewall, 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.
The easiest, and most secure way to access and protect all of your infrastructure.
Secure, scalable server access management for DevOps
Frequently asked questions
How many open source firewall projects are there?
This registry tracks 3 projects tagged firewall, with 43,700 GitHub stars between them. The most-adopted is SafeLine at 22,606 stars.
Are these firewall projects free to use?
Yes — 2 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 firewall 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 firewall 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.