A lightweight comments widget built on GitHub issues. Use GitHub issues for blog comments, wiki pages and more!




The best open source alternative to Isso is utterances. If that doesn't suit you, our users have ranked more than 25 alternatives to Isso and 17 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Isso are Zoomment, giscus, Commento and Cactus Comments.
A lightweight comments widget built on GitHub issues. Use GitHub issues for blog comments, wiki pages and more!




Zoomment is an open-source commenting platform that allows websites to embed a modern, interactive comments section with minimal setup. It’s fully customizable with themes, languages, Gravatar styles, and emoji reactions, enabling creators to foster engagement and community...

A comments system powered by GitHub Discussions. Let visitors leave comments and reactions on your website via GitHub!




Commento is a popular, fast, bloat-free commenting system that you can embed on your blog, news articles, and more. Open source at its core, Commento guarantees you privacy and does not include third-party trackers and advertisements, unlike alternatives such as Disqus.


Cactus Comments is a federated comment system for the web, based on the Matrix protocol. The system is easily embedded, respects you and your users privacy and is completely free and open source.


Chirpy is an open-source, privacy-friendly and customizable Disqus (comment system) alternate, you can embed a comment widget on a blog, a news article or any place where you want your readers to add comments.


Remark42 is a self-hosted, lightweight, and simple (yet functional) comment engine, which doesn't spy on users. It can be embedded into blogs, articles or any other place where readers add comments.






HashOver is a PHP comment system intended as a replacement for services like Disqus. HashOver is free and open source software, under the GNU Affero General Public License. HashOver adds a "comment section" to any website, by placing a few simple lines of JavaScript or...

ommentics is a free, advanced PHP comment script with many features. Professionally written and with open source code, its main aims are to be integrable, customizable and secure. It is designed to be integrated into existing pages.



A commenting server similar to Disqus and IntenseDebate
Licensed under AGPL: https://github.com/phusion/juvia/blob/master/LICENSE.TXT.
