A program for encrypt/decrypt files or text inside clipboard with a password or a certificate located either in certificate storage (certmgr.msc) or in a .cer file. You just have to drag and drop files and folder to the application.
CryptPad is a .NET Compact Framework 1.1 simple notes application which operates encrypted text documents (.wrc) based on user provided password. This way one can store confidential data on Windows Mobile operating systems.
GMX is a file-transfer application that permits the user to store files on a remote computer system: Google's GMail web-based email system. Development in C# (Microsoft VS.NET 2003).