Flarum is the next-generation forum software that makes online discussion fun. It has elegant UI so that user can spend less time clicking and more time talking. Two-Pane Interface - Bring your mouse to the left side of the screen and the discussion list will conveniently appear, Infinite Scrolling, Floating Composer,  The interface has been optimized for touch, with big buttons, smooth animations, and gestures aplenty. 

Flarum - Forums made simple

Forem is open source software for building communities. Communities for your peers, customers, fanbases, families, friends, and any other time and space where people need to come together to be part of a collective. dev.to (or just DEV) is hosted by Forem. It is a community of software developers who write articles, take part in discussions, and build their professional profiles. 

Forem - For empowering community

The Chatter package allows you to easily create a Laravel forum from any existing or new Laravel application.

Chatter - Simple Laravel Forum Package

Postmill is a free, web-based, social link aggregator with voting and threaded comments. It is built on the Symfony framework. Any similarities between this software and that of a large community symbolised by an alien logo are purely coincidental.

Postmill - Social link aggregator with voting and nested comments

Misago aims to be complete, featured and modern forum solution that has no fear to say 'NO' to common and outdated opinions about how forum software should be made and what it should do.
 
Its features include: 
<ul>
<li>Your users may register accounts, set avatars, change options and edit their profiles. They have option to reset forgotten password.</li>
<li>Sign in with Facebook, Google, Github, Steam, Blizzard.net or any other over 50 supported OAuth providers.</li>
<li>Site admins may require users to confirm validity of their e-mail addresses via e-mail sent activation link, or limit user account activation to administrator action. They can use custom Q&amp;A challenge, ReCAPTCHA, Stop Forum Spam or IP's blacklist to combat spam registrations. Pletora of settings are available to control user account behaviour, like username lengths or avatar restrictions.</li>
<li>Create categories together with unlimited number and depth of subcategories.</li>
<li>Write messages using either GitHub flavoured markdown, BBCode subset, or both.</li>
<li>Presence features let site members know when other users are online, offline or banned. Individual users have setting to hide their activity from non-admins.</li>
<li>Complete moderation toolset allowing admin-approved moderators to edit, move, hide, approve, delete or close user posted content. This also includes option to delete or block user accounts or avatars.</li>
<li>Ban system allows you to ban existing users as well as forbid certain user names, e-mails or IP addresses from registering accounts.</li>
<li>Permission system allowing you to control which features are available to users based on their rank, roles or category they are in.</li>
<li>Post accurate read tracker that lets your users spot threads with new posts as well as let moderators spot unapproved replies and non-moderators spot approved posts.</li>
<li>Private threads feature allowing users to create threads visible only to them and those they've invited.</li>
<li>Python-based profile fields framework letting site owners to define custom fields for users to fill in complete with powerful customization options for custom requirements, display or validation logic.</li>
<li>Rich polls system, allowing polls with public and private voters, single and multiple choices as well as ones that allow vote change or limit voting tp limited period of time.</li>
<li>Post attachments complete thumbnailing and gif's animation removal.</li>
<li>Mark post in question thread as best answer, bringing basic Q&amp;A functionality.</li>
<li>Posts edits log allowing you to see how user messages used to look in past as well as revert function protecting you from malignant users emptying their posts contents.</li>
<li>Moderation queue for users and categories allowing you to moderate content before it becomes visible to other members of the community.</li>
<li>Custom theme developed over bootstrap.</li>
<li>Features and settings for achieving GDPR compliance.</li>
<li>Integrate forum with your site using implemented Single Sign On client and JSON API.</li>
</ul>

Misago aims to be complete, featured and modern forum solution that has no fear to say 'NO' to common and outdated opinions about how forum software should be made and what it should do.



Misago - Full featured forum application standing on shoulders of Django

NodeBB Forum Software is powered by Node.js and built on either a Redis or MongoDB database. It utilizes web sockets for instant interactions and real-time notifications. NodeBB has many modern features out of the box such as social network integration and streaming discussions, while still making sure to be compatible with older browsers.
 
NodeBB is mobile-first, allowing for a perfect experience no matter what device or resolution it's viewed on. It also supports Real-time Streaming, SEO, Internationalization, Analytics, Social Integration and lot more.

NodeBB Forum Software is powered by Node.js and built on either a Redis or MongoDB database. It utilizes web sockets for instant interactions and real-time notifications. NodeBB has many modern features out of the box such as social network integration and streaming discussions, while still making sure to be compatible with older browsers.

NodeBB - Node.js based forum software built for the modern web

Scoold is a Q&A platform. The primary goal of this project is educational but it can also work great as a Q&A/support section for your website. Its feature include Full text search, Database-agnostic, optimized for cloud deployment, Distributed object cache, Reputation and voting system with badges, Email notifications for post replies and comments, Social login (Facebook, Google, GitHub, LinkedIn, Microsoft, Twitter) with Gravatar support.

Scoold - Stack Overflow clone in Java

Discourse is a platform for community discussion. Whenever you need a mailing list, a forum to discuss something, a chat room where you can type paragraphs, consider Discourse. It provides a flattened discussion, which avoids the pains of threaded forums, and delivers a more robust, intuitive interface to join a conversation at any point.


Discourse - Discussion Platform like Stackoverflow

FluxBB is a fork of PunBB, is designed as a lighter, faster alternative to some of the traditional feature heavy forum applications. It is easy to use and has a proven track record of stability and security making it an ideal choice of forum for your website. It has Clean admin interface, Flexible permission system, Powerful moderator tools and lot more.


FluxBB - Fast, light, user-friendly forum application for your website

Educate and Empower software professionals in open source tools and technologies.

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