MediaWiki is described as 'Free software wiki package written in PHP, originally for use on Wikipedia. It is now used by several other projects of the non-profit Wikimedia Foundation and by many other wikis' and is a very popular Wiki Engine in the education & reference category. There are more than 50 alternatives to MediaWiki for a variety of platforms, including Web-based, Self-Hosted, Windows, Linux and SaaS apps. The best MediaWiki alternative is Google Docs, which is free. Other great apps like MediaWiki are TiddlyWiki, Docmost, DokuWiki and Ibis Wiki.
MDwiki is a CMS/Wiki completely built in HTML5/Javascript and runs 100% on the client. No special software installation or server side processing is required. Just upload the mdwiki.html shipped with MDwiki into the same directory as your markdown files and you are good to go!
BoltWire is an easy to use web development system with surprising flexibility and power. Our innovative architecture plus best-in-class forms processing makes it easy to create complex, interactive, web applications fast. Best of all, it's FREE...
Create, share, and print vibrant docs without the headache of formatting text — for everything from notes to massive user manuals.
Noteship is a personal information manager that combines notes, todos, and reminders and is based on simple files and folders.
A memo system to increase efficiency of meetings by publishing meeting memos before meetings take place in a team work environment. Memos are stored in private spaces as PDF and get reviewed with a signature process if needed before publication.
United States
Journalify is a modern, intuitive platform that enables users to transform their life through journaling. It provides a space where you can focus on writing, free from worries about privacy and accessibility.
An entire wiki in a single PHP file. Intended for small - medium sized wikis. Supports themes, multiple users, and uses a module-based approach to allow features to be added and removed at will.
United Kingdom
UserPress is a wiki plugin for WordPress offering sophisticated functionality wrapped in a simple, intuitive interface. UserPress allows users to edit and create content using your front-end theme (as opposed to the wp-admin area), much like Wikipedia.
Australia
Lessons Learned Server is a light-weight knowledge-base web application with powerful editing capabilities. Based on PHP and MySQL. Available as a downloadable server application or via cloud hosting.
United States
A free wikifarm project allowing to keep private wiki and build it up through MediaWiki syntax.
Germany
EU
