Disqus

Disqus offers the best add-on tools for site owners to power discussions, increase engagement, and earn revenue.

Freemium $ $ $ Web Wordpress

Isso

Isso – Ich schrei sonst – is a lightweight commenting server written in Python and JavaScript. It aims to be a drop-in replacement for Disqus. It supports CRUD...

Free Open Source Linux

Commento

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...

Freemium Open Source Mac Windows Linux Web BSD ... Self-Hosted

HashOver

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...

Free Open Source Self-Hosted

Pubble

Pubble is the world's best Q&A platform. We make it simple and easy to add a great Q&A platform to any blog, website or Facebook page. We believe in...

Commercial Web

talkatv

talkatv is an open source comment service much like Disqus or IntenseDebate .

• Discontinued The last commit to the GitHub repo was on December 3rd, 2012.

Free Open Source Web JavaScript

coComment

coComment is a service for managing, powering and researching conversations online. When using coComment, you can keep track of your comments across any site, share them...

• Discontinued Seems to be discontinued as of April 2 2013.

Free Open Source Mac Windows Linux Firefox

JustComments

Just Comments is a simple and reliable commenting system for any website. Its features include easy integration, custom authentication, multiple languages, Gravatar...

Commercial $ $ $ Open Source Web Self-Hosted Software as a Service (SaaS)

utterances

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

Free Open Source Self-Hosted GitHub

Schnack

Schnack is an open source commenting system written in JavaScript. * Tiny! It takes only ~8 KB!!! to embed Schnack. * Open source and self-hosted. * Ad-free and...

Free Open Source Self-Hosted

Commentics

Commentics is an advanced PHP comment script with many features. Its main aims are to be integrable, customizable and secure. It is designed to be integrated into your...

Free Open Source Mac Windows Linux

Master Comments System

Master Comments System is a very compact comments system with basic options: Comments can be accepted from all users or only registered users. Admin can...

• Discontinued Latest commit 39def28 on Jul 29, 2013

Free Open Source Self-Hosted

Commentar

Commentar is a self hosted open source commenting system which can easily be integrated into any existing system. It is a modular system and some features that will be...

• Discontinued The last commit to the GitHub repo was on Juky 27nd, 2014.

Free Open Source Self-Hosted

RbComment

RbComment - Zend Framework 2 module for drop-in, self-hosted comments, with email notifications, Akismet, ZfcUser and Gravatar integration.

Free Open Source Self-Hosted

jskomment

jskomment is an open source commenting system that is built on javascript and AJAX.

Free Open Source Linux BSD Self-Hosted