1)   SynthMaker 0.9.5j
SynthMaker is a graphical programming environment for creating VST instruments and effects plug-ins. You can also use SynthMaker to learn about and experiment with digital signal processing so it's a great educational tool as well.

 2)   SmartPlugin Engine 2.2.05-rc1
SmartPlugin is a tool for creating modular applications. Instead of having a single and huge executable, with SmartPlugin you can split your applications functionality into modules (plugins), making it much better organized, very easy to maintain.

 3)   SVArTracker 1.2
Advanced music creation tool. Next generation of trackers. Modular virtual studio. Can load VST,DX plugins - virtual studio instruments.

 4)   AIOCP (All In One Control Panel) 1.3.002
AIOCP is a free Open Source Content Management System (CMS), a professional all-inclusive solution to completely manage a website or portal through a user friendly web-interface. AIOCP includes e-commerce, e-business and development framework.

 5)   Interscope BlackBox 4.2
A modular, extensible and easy-to-use security suite that smoothly integrates into the Windows and your e-mail client, making your desktop a safer place.