Vijner 974 E-Sys (2048 bits and unlimited encryption). Enables easy (un-)encryption from textinput or .txt file, and to (un-)encrypt raw files, with Vigenère Algorithm + unlimited encryption keys. Simple and powerful. Adapt to fit your needs.
This is an ASP.NET C# implementation of a CAPTCHA. You can choose any; size, font, color, background, pattern, add random lines or even add a background image. Also includes an audible version of the captcha text as well as refresh functionality.