Cactus Comments

Cactus Comments logo

Cactus Comments is a federated comment system for the open web, based on the Matrix protocol.

Get Started Try the Demo

Embed Anywhere

Easily use Cactus Comments on any webpage whether it is static or dynamic.

Privacy Respecting

Give your users full control over who hosts their data. Users can log in using any Matrix server they choose.

Highly Compatible

Read and post comments in your browser, or continue the conversation using any other Matrix client.

Libre and Open Source

The source code for the web client is LGPLv3 licensed, and the backend service is AGPLv3 licensed.


Comment sections are accesible from any homeserver on the Matrix network.

Powered by Open Standards

Cactus Comments is powered by the Matrix open standard for decentralized real-time communication.