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Open source web servers

Web Servers and Reverse Proxies. A web server is a piece of software and underlying hardware that accepts requests via HTTP (the network protocol created to distribute web content) or its secure variant HTTPS. A Reverse Proxy is a proxy server that appears to any client to be an ordinary web server, but in reality merely acts as an intermediary that forwards requests to one or more ordinary web servers. Repoly tracks 19 open-source web servers tools, each scored nightly from its repository activity and ranked by that score alone. Caddy leads at 100/100 with 152 commits in the last 90 days and 79k stars, followed by Traefik (99) and NGINX (98). 16 of the 19 score 70 or above, 19 publish a Docker image, and the median health is 94. Apache-2.0 is the most common licence, carried by 4 of them. Between them they stand in for Tailscale.

updated Oct 2026 19 tools ★ 296k stars 19 with Docker median 94

Best for…

  • Most starred

    Caddy

    78,554 stars on GitHub, the largest community in the category.

  • Most active

    Pangolin

    1,058 commits in the last 90 days, the fastest-moving codebase here.

  • Most permissive

    Traefik

    MIT licence with health 99/100: the strongest option if you need to embed or fork commercially.

Ranked by health

Table view

How the web server tools compare

Caddy edges Traefik 100 to 99. Traefik is the busier codebase, though, with 269 commits in 90 days to 152. Caddy also has the largest following, at 79k stars.

The most recent release is Traefik v3.7.17, published today. Lighttpd publishes no tagged releases, which costs up to 25 of the 100 points. Lighttpd scores under 40, so check recent activity before adopting it. By stack, Go (7), C (5) and Rust (2) are the most common. Caddy, Traefik, NGINX and 9 more are permissively licensed; Pangolin, SafeLine, BunkerWeb and 4 more are copyleft. Apache HTTP Server and HAProxy are not hosted on a forge Repoly can read, so they have no measured score yet.

Web Servers: common questions

What is the best open source web server tool?

By Repoly's GitHub health score, Caddy at 100/100 (152 commits in 90 days, v2.11.7 from 27 days ago). Traefik is next at 99. The score measures maintenance, not features, so shortlist the top few and try them.

Which web server tools are the most actively developed?

Pangolin (1,058 commits in 90 days), Ferron (948 commits in 90 days) and BunkerWeb (619 commits in 90 days). Commit activity is 35 of the 100 health points, the largest single term.

Which web server tools can I run in Docker?

19 of 19 publish a Docker image or Compose file, led by Caddy, Traefik, NGINX, Nginx Proxy Manager, Pangolin and 14 more.

Which web server tools have a permissive licence?

12 of 19: Caddy (Apache-2.0), Traefik (MIT), NGINX (BSD-2-Clause), Nginx Proxy Manager (MIT), Pomerium (Apache-2.0) and 7 more. 7 are copyleft.

Which paid products can open source web server tools replace?

Tailscale (Pangolin ranks highest here).