FreeScout

1.8.13 (May 2022)

FreeScout is the perfect help desk solution for those who need to provide a professional customer support, but who can not afford to pay for Zendesk or Help Scout.

PmWiki

2.3.4 (April 2022)

PmWiki is a wiki-based content-management system (CMS) for collaborative creation and maintenance of websites. Page editing can be left open to the public or restricted to small groups of authors.

Live Helper Chat

3.83 (September 2021)

Live support for your website. Featuring web and desktop clients. XMPP notifications support including GTalk, Android, IPhone. Enables interactive live chat for customers support.

Hesk Helpdesk

3.2.3 (August 2021)

Hesk allows you to setup a ticket based support system for your website. Your customers are able to submit support tickets and the staff has a nice web based interface to reply to and manage tickets.

Mibew Messenger

3.5.1 (August 2021)

Mibew Messenger (also known as Open Web Messenger) is an open-source live support application that enables one-on-one chat assistance in real-time directly from your website.

osTicket

1.15.3.1 (July 2021)

osTicket is a widely-used and trusted open source support ticket system. It seamlessly routes inquiries created via email, web-forms and phone calls into a simple, easy-to-use customer support platform.

MediaWiki

1.36.1 (June 2021)

MediaWiki is a free and open source software wiki package written in PHP, originally for use on Wikipedia. It is now also used by several other projects of the non-profit Wikimedia Foundation and by many other wikis.

WackoWiki

6.0.23 (April 2021)

WackoWiki is a small, lightweight, handy, expandable, multilingual Wiki-engine. It's designed for speed and extensibility. Includes a WYTIWYG editor, easy installer and many localizations.

phpMyFaq

3.0.9 (April 2021)

phpMyFAQ is a multilingual, completely database-driven FAQ-system based on PHP and MySQL. phpMyFAQ also offers a Content Management-System with a WYSIWYG editor and an image manager.

Question2Answer

1.8.6 (April 2021)

Question2Answer is a free PHP/MySQL solution for social Q&A sites (like Stack Overflow or Stack Exchange) with the following features: Five minutes to install, Easy styling with CSS themes...

HelpDeskZ

2.0.2 (March 2021)

HelpDeskZ allows you to manage your site's support with a web-based support ticket system. Categorize tickets into groups to organize tickets and assign agents to groups to manage tickets.

OpenSupports

4.9.0 (January 2021)

OpenSupports is a support center for your website. You can create staff members who will help you to answers user's tickets. Also, you can have an articles library for your users.

LionWiki

3.2.12 (October 2020)

LionWiki is minimalist file-based, templatable, extensible wiki engine which works from just one file. It's intended for small personal websites, notebooks and other simple applications.

DokuWiki

2020.7.29 (July 2020)

DokuWiki is a standards-compliant, simple-to-use Wiki mainly aimed at creating documentation of any kind. It is targeted at developer teams, workgroups, and small companies.