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

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 both the web client and the backend service are available under the GPLv3 license.

Decentralized
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.