Actually there is a great IDE for both C# and VB.NET available that is free - SharpDevelop http://www.icsharpcode.net/OpenSource/SD/. Until recently it was licensed under the GPL but the latest build of the upcoming release just switched to LGPL. Still, it free and it's source is freely available. Don't know if it runs on Linux under Mono though...
Actually there is a great IDE for both C# and VB.NET available that is free - SharpDevelop http://www.icsharpcode.net/OpenSource/SD/. Until recently it was licensed under the GPL but the latest build of the upcoming release just switched to LGPL. Still, it free and it's source is freely available. Don't know if it runs on Linux under Mono though...
Check out PasswordCourier (Warning - Flash required). I know it works well - I work there :-).