Facebook Comments Box!

Disqus is the web’s most popular discussion system. It's a global comment system that improves discussion on websites and connects conversations across the web.

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

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 PHP to the source code of any webpage. HashOver is a self-hosted system and allows completely anonymous comments to be posted, the only required information is the comment itself.

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

A commenting server similar to Disqus and IntenseDebate

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 implemented are:

Master Comments System is a very compact comments system with basic options:

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

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

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 with friends, and get notified when you get a response.

Livefyre is an embeddable real-time commenting platform that turns comments on any site into live conversations, increases the quality of those conversations, and drives traffic to content around the web.

IntenseDebate is the premier commenting system available on the Internet for blogs and websites. IntenseDebate comments enhances and encourages conversation on your blog or website. With IntenseDebate you can give your blog readers the opportunity to better engage your blogs content and each other. ID offers numerous features that makes improves the commenting experience, like our Reply By Email functionality which enables you to reply to and moderate comments via email!

Almost every business owns a website these days. However, few of them are able to engage their visitors. We provide a solution. A comment widget with a strong focus on customizability, privacy and a modern look.

Comment with contextInteracting without context robs your audience of meaningful interactions. Krowdify Notes allows your users to highlight their favorite part of your content and comment on it inline as opposed to leaving a lonely comment at the bottom of the page.

Powering the Realtime Social Layer for Entertainment, Local Media and High Traffic Blogs. Realtidbits was acquired by Livefyre.com.