Download of Speedcrypt 1.5 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The software lies within Security Tools, more precisely General. We recommend checking the downloaded files with any free antivirus. This free tool was originally designed by Mariano Ortu.
From the developer:
Speedcrypt provides its users with protection against Dictionary Attacks, Guessing Attacks or Brute Force Attacks, and Rainbow Table Attacks. These types of attacks cannot be prevented in any way, but they can be made much more difficult to execute. And Speedcrypt does!
To protect keyboard input, a new feature has been introduced: Protected Mode.
You may want to check out more software, such as Visec Surveillance Software, USB Copy Protection Android Win ttdsoft or Curtain MonGuard Screen Watermark, which might be related to Speedcrypt.