Here is a list of open source application that I found.
TeeChart for PHP is an Object-Oriented Charting component library for PHP. The library is completely written in PHP and ready to be used in any PHP scripts. TeeChart for PHP is offered via two formats, the Free Open Source version and the Licensed Pro version. Both include the full source code meaning that no loaders have to be used in order to create a Graph on your servers. Most of the features are identical between versions; the significant exceptions being that only the licensed Pro version of the TeeChart for PHP library may be used in a commercial context (please check the Licensing info for details) and that standard support is only available for the licensed Pro version.
FusionCharts Free is a completely free and open-source Flash charting component. It empowers you to create animated and interactive Flash charts for your web applications, desktop applications and presentations.
Achievo is a flexible web-based resource management tool for business environments. Achievo's resource management capabilities will enable organisations to support their business processes in a simple, but effective manner.
Nevron Diagram Designer is a freeware diagram editor powered by Nevron Diagram for .NET controls. It is suitable for creating various kinds of diagrams and performing different layout algorithms on them. The Diagram Designer also can make you familiar with the features provided by Nevron Diagram for .NET
Epiware is the open source alternative for Enterprise Document Management. It contains all of the cutting edge features and functionality. Enable your employees to collaborate on projects, share documents, create schedules, and manage tasks.