Vbs To Exe is an straightforward and intuitive small freeware written (based on Visual Basic scripting language) for developers. It can quickly convert VBS format of script files to EXE - executable format.

Turbo Studio (formerly called: Spoon/Xenocode Virtual Application Studio, or Spoon/Xenocode Studio for short) is a user-friendly application virtualization tool. It can encapsulate all files required by a program in a virtual container, supports customization and pre-configuration of the virtualized applications.

UPX (Ultimate Packer for eXecutables) is a very comprehensive executable file compressor/decompressor that only supports DOS/command-line. It supports executable files on almost any sorts of platforms (EXE, DLL, OCX, BPL, CPL, etc.), comes with excellent compression ratio.

For learning or formal development of C#, there are only two best IDE for choice at present: either the 10+ GB size of Visual Studio or SharpDevelop with only 10+ MB file size. The latter is an open-source IDE with layout similar to IDEA for Java and high flexibility & extensibility, which lets a user find everything new and fresh. It never wants to be an IDE that tries to support everything as Eclipse. Instead, it just gives you an interface, and you can do all the rest by yourself.

Developing C# applications, there is no better IDE than Microsoft Visual Studio this super fatso (but I do prefer the lightweight and fast Microsoft Visual Studio Express or SharpDevelop, MonoDevelop, QuickSharp)! Once you've installed this colossus, your Windows is basically discarded. At least, users with disk maintenance OCD will agree with me.