TiddlyWiki is an open source wiki application which works with only one HTML file.

It uses the power of CSS & JavaScript (with jQuery) to enable displaying, editing, saving, tagging & searching of the content.

Considering the ease of use, installation & portability, it is ideal for creating an instant (maybe temporary) website, a personal notebook & so.

It is possible to import/export content from other TiddlyWikis & improve the features with the plugin support.

Wiki applications, as they make storing & sharing the knowledge easier, are very popular & handy.

There are lots of wiki applications & it is hard to decide which one to choose. But there is a quality resource to help you decide.

WikiMatrix is a website that helps you compare wiki applications, guide you with a wiki choice wizard & provides helpful information on them.

The website is so detailed that it enables you to compare the markups of wikis as well.

You can find statistics on each application & wiki-related-discuss on forums.

To sum up, if you are planning to setup a wiki, it is a good choice to give WikiMatrix a look.

Liferay, with 60 tools and a selection of today’s most innovative technologies, enables you to do everything like:

• Creating websites.
• Building intranets.
• Simply getting the right documents and applications to the right people.

Liferay inlcudes web publishing, content management, collaboration and social networking.

With the role-based authorization, admins & users can define which information can be viewed by which users.

A strong set of community features help creating communities, user groups & they can have their own mini-portals.

Some other included features are: wikis, forums, instant messenger, calendar, webmail, blogs & more.

And, any other applications like accounting, sales can be integrated with its open architecture.

The application is "giant" with the features it offers & hard to describe its capabilities completely. Users interested in creating an enterprise portal should definitely check it.

ClockingIT is an open source task – time tracking & project management application (normall a free hosted app. & source code is available) built with Ruby on Rails.

With a slick Ajaxed interface and providing information in every step of creating projects or tasks, ClockingIT is a very user-friendly application.

It is a complete solution for managing projects within a team as it offers nice tools like an integrated wiki, forum & a Facebook-like chat within team members.

Features of this free Ruby on Rails application:

• no restrictions or limits
• time tracking & reports
• milestones & due dates
• tagging & search
• timeline & activity log
• notifications, rss & iCal
• integrated wiki, forum & chat
• multilanguage

Streber is a free wiki driven project management tool written in php5.

Freelancers and small teams can easily setup projects and keep track of tasks, issues, bugs, efforts etc.

It is a very user-friendly application with hidden details like right mouse-button brings up context-menus or navigation can be done with keyboard.

Some features of this open source project management tool:

• Tasks can have project-specific labels and categories
• Tasks can be grouped hierarchically
• Tasks can have required tasks
• Tasks can be extended by issue-reports and linked to project-versions
• Tasks can be grouped to mile-stones and groups
• Multilangual and already comes with several languages
• Project-user-rights can be adjusted (for ex: to provide clients a limited view of the current project state)
• Version controlled upload of files
• Advanced formatting with wiki syntax
• Complete change history of anything
• Notification mails on change
• & more..

Streber requires a PHP5 enabled web server + MySQL as the database.

markItUp! is a lightweight and customizable jQuery plugin which turns any textarea into a markup editor.

It has ready-to-use tag sets for HTML, textile, wiki syntax, markdown and BBcode inputs. Also, you can easily create your own.

Some powerful features of this markup editor are:

• Fast and unobtrusive integration
• Support for keyboard shortcuts
• Fully customizable and scriptable
• Ajax dynamic preview
• Customizable skins

Bitnami can be called as an installation framework that makes it easier than ever to try the latest and greatest versions of popular open source software. Just install, play with the software, and uninstall when you are done. The stacks are pre-configured, self contained, and will not interfere with the rest of your system.

What is a stack?

BitNami stacks make it incredibly easy to install your favorite open source software. Application stacks include an open source application and all the dependencies necessary to run it, such as Apache, MySQL and PHP or Ruby. All you need to do is download the Stack, provide a few pieces of information when prompted by the installation wizard, and that’s it. By the time you click ‘finish’, your new application will be ready to run.

Softwares supported (for now, new applications are added frequently that are decided with the community polls):

 Infrastructure
- LAMPStack
- MAMPStack
- RubyStack
- WAMPStack
Blog
- Roller
- WordPress
Bug-Tracking
- Mantis
- Redmine
- Trac
CMS
- Alfresco
- Drupal
- Joomla!
- KnowledgeTree
ECM
- Alfresco
- KnowledgeTree
Forum
- phpBB
Poll Management
- Opina
Portal Server
- Liferay
Wiki
- DokuWiki
- MediaWiki
eLearning
- Moodle