Free Calendar with MySQL and Script.aculo.us has 3 main parts, the Javascript, the HTML and the PHP script. You can change the date with the form and it will update the calendar without having to reload the entire page, AJAX style.

Its very easy to use this Calendar System. Simply copy the entire calendar into whatever directory you want. Create your database and import the “databaseSQL.sql” file into it, this will create the default data for running it. And then, alter the “databaseConnection.php” file to show your connection details.

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Tracks is a web-based and open source to-do-list application to help you plan your routines. It was built using Ruby on Rails, and comes with a built-in webserver (WEBrick), you can run “Track” on any Ruby Enabled computer.

Ruby can be installed, including Mac OS X, Windows XP and Linux. Tracks is Open Source, Free and licensed under the GNU GPL.

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The perfect solution if you want to have a rating script on your page! It uses MySQL as the database & the interface can be styled via CSS.

It has different nice variations to choose from, you can rate using radio buttons but you will get stars as a result.

Explore Website

Demo can be accessed here

Get your copy

Swift and simple poll widget for your website. Your own poll on your website, no registrations, fully customizable.

Ajax Poll Admin: Ajax based and easy to use.

Features:

• Unlimited free polls with unlimited options and votes per poll.
• Fully customizable skin, editable via CSS.
• Multi-language support.
• Block repeated votes by IP.
• MySQL support – using XML files can be quite heavy on the server if you have many visitors.

Website: http://www.dracon.biz/dracon_poll.php

Demo: http://poll.dracon.biz/

Xuheki is an open source IMAP client with an Ajaxed interface.

It looks-feels like a desktop application & supports multiple IMAP servers/identities.

It uses the Net::IMAP::Client Perl module as the IMAP engine & built with DynarchLIB Ajax Toolkit.

Some features of Xuheki:

• Supports multiple folders with drag’n drop
• It can stay connected to an IMAP server
• Interface allows you to do multiple things once
• Multiple user support
• Contact list & more..

It requires Perl & MySQL 5 to run.

Requirements: Perl 5.8+, Apache 2+,mod_perl 2+,MySQL 5+
Compatibility: IE can have problems (not well tested)
Website: http://www.xuheki.com/
Download: http://www.xuheki.com/download/

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.

Requirements: Supports multiple OSs, applications servers & databases.

Open Web Messenger is an open source live support / chat application.

It enables customers / visitors to chat with an operator & get support (where all the chats are logged).

The application supports unlimited operators, visitors & chats. With a web-based admin interface, operators or admins can:

• Send canned messages
• Track where visitors clicked from
• Search porevious chat conversations
• Reassign/transfer chat to another operator
• Mark/highlight nuisance visitors
• View active chats (admins) & more

When there is no available operator, visitors can leave a message & they can be contacted later.

The look & feel of the chat window can be totally customized with the theme support.

This free live support application requires PHP 5 & MySQL 5 to run.

Claros, which is a passionate team in creating open source software, has a beautiful software named Claros inTouch.

Clasor InTouch is an ajax communication suite with key features such as webmail, address book, post-it notes, calendar (in progress), webdisk (in progress), built-in instant messenger and RSS reader. It is the first open source web application which features built in spam protection and instant messaging capabilities together with web 2.0 technologies.

It is built with Java, utilizes JSP/Servlets with the well known J2EE technologies & uses MySQL database.

Claros inTouch is more than a free webmail software with a slick interface & usability.

It is offered under GNU which makes this communication suite software totally free.

Constructr is a fresh open source CMS application built with PHP & MySQL.

With an Ajaxed backend, this CMS application uses TinyMCE for content editing & supports clean URLs via mod_rewrite.

The admin interface has:

• Backend user & right management
• Asset center for uploads
• Integrated search engine for asset
• Automatic sync after FTP-uploads
• Automatic thumb´s for image-uploads
• Integrated shadowbox-viewer for assets
• Customizable backend language (Available: DE, EN, US, CH, AU)
• Live preview  for hidden pages and content

For the frontend:

• Cache system
• File based templates
• Multilingual frontend support
• Use a frontent that fits your special needs (pure PHP and MySQL, Smarty, Flash …)
• Individual 404 error page
• Automatic RSS 2.0-Feed for every single content

Like mentioned, this free content management system is still fresh but frequently updated & looks promising.

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.