ZMail is the best open source program for sending fake or anonymous email. If you need to send a quick email to someone without opening your regular email program, test an email server, or perhaps play a prank on your friends, ZMail is for you.
.NET FontManager is a small handy open source library for .NET and ASP.NET. It provides low-level operations with various font formats, which include: TrueType and TrueType collections, OpenType and OpenType collections, etc.
Ganib is open source alternative to Microsoft Project Online with Office 365. Get started quickly with a flexible online solution for project management, collaboration and everyday work delivered through Ganib.
Visifire is a set of open source charts - powered by Microsoft Silverlight and WPF. Visifire is a multi-targeting control which can be used in both WPF & Silverlight applications.
RecoveryFix for OST to PST comes with evaluation version and licensed version of which evaluation version works like licensed version but does not saves result. Just for trial user can try open source OST to PST tool.