Open Skype Web Messenger

The NetVis Module is a free open source web-based tool designed to simulate, analyze, and visualize social networks using data from csv files, online surveys, and geographically dispersed work teams. Built using php, mysql, and java for visualization. Platforms: Windows, Mac, Linux

NMRShiftDB is an open-source, open-access, open-submission, open-content web database for chemical structures and their nuclear magnetic resonance data. Platforms: Windows, Mac, Linux

The first open source Web 2.0 website log analyzer, OWS uses PHP and jQuery to provide a powerful and intuitive interface to manipulate website log data stored in a MySQL database. Has a simple plugin system so you can create custom output as well. This program is called Obsessive Web Statistics... Platforms: Windows, Mac, *nix, PHP, BSD Solaris

OPACIAL is an open source Web 2.0 Online Public Access Catalogue (OPAC). It is based on PHP-Mysql (requires Yaz and GD). The users can isnert their own social tags/opinions and have a faceted search/browse interface (also using social tags). Platforms: Windows, Mac, BSD, Solaris, Linux

PHPfileNavigator is a PHP Open Source Web File Manager. Easy to install and use. All in CSS and Valid XHTML 1.1, allow manage all possibilities with files and folders. Platforms: Windows, Mac, Linux

An Open Source, web based data cleaning and coding system. queXC takes a data file (such as questionnaire data) and cleans the text input fields by spacing and spell checking them. Operators then code text fields using new/existing coding schemes. Platforms: Windows, Mac, Linux

SimplecoreLogic is enterprise open source web based one-stop development platform with powerful script language enables developers to quickly build web and web services applications that help businesses be more responsive, flexible, low development and m Platforms: Windows, Mac, Linux

Trackulator - free open source web based APRS client with heavyweight RDBMS multiuser backend Platforms: Windows, Mac, Linux

Open Source web-based suite of tools used to facilitate emergency medical services (EMS) . Supports the entire Ambulance Services Pipeline - modules include dispatch, crew scheduling, mobile field data collection, billing, administration, and reporting. Platforms: Windows, Mac, Linux

You always wanted to automatically open different web sites in browsers of your choice? Now you can. Use Browser Fairy to connect your favorite web sites with your prefered browsers. A click on a link - let's say in Mail or Twitter - Brow Platforms: Mac

Mail Tab for AOL is the only app which give you instant access to your AOL Mail account without having to open your web browser. Mail Tab for AOL automatically alerts you when you receive an email (visual and/or sound alert). With this a Platforms: Mac

Mail Tab for Hotmail is the only app which give you instant access to your Windows Live Hotmail account without having to open your web browser. Hotmail tab automatically alerts you when you receive an email (visual and/or sound alert). Wi Platforms: Mac

Mail Tab for Yahoo is the only app which give you instant access to your Yahoo Mail account without having to open your web browser. Mail Tab for Yahoo automatically alerts you when you receive an email (visual and/or sound alert). With Platforms: Mac

XOOPS is an Open Source Web Application Platform, empowering webmasters to create dynamic and content rich websites with ease. It is highly compatible with XOOPS, allowing users to implement and enjoy their favourite XOOPS modules (have to be at least 2.0.7 compliant), while using the new and... Platforms: Windows, *nix, PHP, BSD Solaris

SteelBlue is an open-source Web application server environment in which Web-database applications can be developed completely in an extended HTML language. Similar to ColdFusion and Story Server, session and user-associated data as well as SQL commands can be directly embedded into the HTML page.... Platforms: Windows, Mac, *nix, C/C++, BSD Solaris

Project-Based Calendaring System (in short PBCS) is an open source web-based calendaring system, designed to be an useful aid for people who manage schedules for one or more persons. The main feature of PBCS, which distinguishes it from all other calendar applications, is that schedule planners... Platforms: Windows, Mac, *nix, PHP, BSD Solaris

The aim of this project is to provide an Open Source, web enabled school calendaring system that is event based, has a lot of features, is easily and intuitively used and managed. Features: - Event management - Holiday management - No School days or Break management - Event Recurrence and... Platforms: Windows, Mac, *nix, PHP, BSD Solaris

AJAX Chat is a free and fully customizable open source web chat software implemented in JavaScript, PHP and MySQL. Sound support is implemented using Flash, Socket support using Flash on client-side and Ruby on server-side. AJAX Chat integrates nicely with phpBB, MyBB, PunBB, SMF, vBulletin and... Platforms: Windows, Mac, *nix, JavaScript, BSD Solaris

Flash IRC client is a feature rich open source web-chat client based on IRCwx protocol. It is built in flash - 95% of all browsers have flash installed, no activex to download and no hassle in installation, completely cross platform (works on Windows, MAC, and Linux), and secure. Its main... Platforms: Windows, Mac, *nix, Flash, BSD Solaris

OpenLeague is an open source web site content management system for sports leagues. OpenLeague uses a simple intuitive web interface to make it easy for any sports league (baseball, football, basketball, soccer, lacrosse, etc.) to create a completely dynamic web site that delivers the information... Platforms: Windows, Mac, *nix, PHP, BSD Solaris