Top pick · highest health
imgproxy
Fast and secure standalone server for resizing and converting remote images.
★ 11k 99 commits / 90d ⟳ 4 days ago MIT Docker
Category
Open source proxy
A proxy is a server application that acts as an intermediary between a client requesting a resource and the server providing that resource. This section about forward (i.e. outgoing) proxies. For reverse proxies, see the Web Server section. Repoly tracks 9 open-source proxy tools, each scored nightly from its repository activity and ranked by that score alone. imgproxy leads at 96/100 with 99 commits in the last 90 days and 11k stars, followed by sish (94) and GitProxy (90). 4 of the 9 score 70 or above, 5 publish a Docker image, and the median health is 61. Apache-2.0 is the most common licence, carried by 4 of them. Between them they stand in for NordVPN.
updated Oct 2026 9 tools ★ 30k stars 5 with Docker median 61
Best for…
Ranked by health
Table view
-
-
sish
HTTP(S)/WS(S)/TCP tunnels to localhost using only SSH (serveo/ngrok alternative).
★ 4.8k 29 commits / 90d ⟳ 3 days ago MIT Docker
-
GitProxy
Proxy for Git that applies rules and workflows to all outgoing git push operations and ensures they are compliant. It supports both HTTP/HTTPS and SSH protocols with security scanning and validation.
★ 262 466 commits / 90d ⟳ today Apache-2.0 Docker
-
g3proxy
Forward proxy server supporting proxy chaining, protocol inspection, MITM Interception, ICAP adaptation and transparent proxy.
★ 893 26 commits / 90d ⟳ 5 days ago Apache-2.0
-
-
socks5-proxy-server
SOCKS5 proxy server with built-in authentication and Telegram-bot for user management and user statistics on data spent (handy when you pay per GB of data). It is dockerised and simple to install.
★ 145 0 commits / 90d ⟳ 9 days ago Apache-2.0 Docker
-
Outline Server
A proxy server that runs a Shadowsocks instance for each access key and a REST API to manage the access keys.
★ 6.3k 1 commits / 90d ⟳ 2 days ago Apache-2.0 Docker
-
Privoxy
Non-caching web proxy with advanced filtering capabilities for enhancing privacy, modifying web page data and HTTP headers, controlling access, and removing ads and other obnoxious Internet junk.
★ 0 0 commits / 90d ⟳ unknown GPL-2.0
-
Squid
Caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages.
★ 0 0 commits / 90d ⟳ unknown GPL-2.0
| # | ||||||
|---|---|---|---|---|---|---|
| 1 | imgproxy Docker | 11k | 99 | MIT | 4 days ago | |
| 2 | sish Docker | 4.8k | 29 | MIT | 3 days ago | |
| 3 | GitProxy Docker | 262 | 466 | Apache-2.0 | today | |
| 4 | g3proxy | 893 | 26 | Apache-2.0 | 5 days ago | |
| 5 | Tinyproxy | 6k | 12 | GPL-2.0 | 1 month ago | |
| 6 | socks5-proxy-server Docker | 145 | 0 | Apache-2.0 | 9 days ago | |
| 7 | Outline Server Docker | 6.3k | 1 | Apache-2.0 | 2 days ago | |
| 8 | Privoxy | 0 | 0 | GPL-2.0 | unknown | |
| 9 | Squid | 0 | 0 | GPL-2.0 | unknown |
How the proxy tools compare
imgproxy edges sish 96 to 94, and most of the difference is stars: 11k stars against 4.8k stars.
The most recent release is sish v4.0.0, published 3 days ago. None of the measured options scores under 40. By stack, C (3), Go (2) and Nodejs (2) are the most common. imgproxy, sish, GitProxy and 3 more are permissively licensed; Tinyproxy, Privoxy and Squid are copyleft. Privoxy and Squid are not hosted on a forge Repoly can read, so they have no measured score yet.
Proxy: common questions
What is the best open source proxy tool?
By Repoly's GitHub health score, imgproxy at 96/100 (99 commits in 90 days, v4.0.20 from 4 days ago). sish is next at 94; imgproxy's lead comes mostly from stars. The score measures maintenance, not features, so shortlist the top few and try them.
Which proxy tools are the most actively developed?
GitProxy (466 commits in 90 days), imgproxy (99 commits in 90 days) and sish (29 commits in 90 days). Commit activity is 35 of the 100 health points, the largest single term.
Which proxy tools can I run in Docker?
5 of 9 publish a Docker image or Compose file, led by imgproxy, sish, GitProxy, socks5-proxy-server and Outline Server.
Which proxy tools have a permissive licence?
6 of 9: imgproxy (MIT), sish (MIT), GitProxy (Apache-2.0), g3proxy (Apache-2.0), socks5-proxy-server (Apache-2.0) and 1 more. 3 are copyleft.
Which paid products can open source proxy tools replace?
NordVPN (Outline Server ranks highest here).
