Onion Services Libraries

Considering to add Onion Service support to your application? Here we maintain a matrix of available libraries.

Info

This page merely acknowledges the existence of a given library, and does not necessarily endorses or recommends it.

While some libraries are maintained by Tor, like Stem, and some by people who also work at Tor, like libCwtch and Gosling, there are others maintained by entirely different teams.

Feature set, maintenance status, security coverage and other characteristics may vary, so make sure to check each library documentation for details.

Last updated on 2026-02-11.

Library	Description	Interfacing	Bindings for	For C Tor?	For Arti?
Stem	Python controller library for Tor with Onion Service support	ControlPort	Python	Yes	No
txtorcon	An implementation of the control-spec for Tor using the Twisted networking library for Python	ControlPort	Python	Yes	No
Bine	Go library for accessing and embedding Tor clients and servers	ControlPort	Go	Yes	No
libCwtch	Decentralized, privacy-preserving, multi-party messaging protocol for building metadata resistant applications	Bine	C, Go, Rust	Yes	No
Gosling	For creating applications providing anonymous, secure, and private peer-to-peer functionality using Onion Services	tor-interface	C, C++, Rust, Python, Java	Yes	Underway
iroh	Modular networking stack that supports Onion Services as a custom transport	ControlPort	Rust	Yes	No
onyums	axum wrapper for serving web-based Onion Services	tor-hsservice	Rust	No	Yes
artiqwest	simple HTTP client that routes requests through the Tor network (can access Onion Services)	arti-client	Rust	No	Yes
torrosion	A Tor library for Rust	Own implementation	Rust	No	No