Welcome to Twiddlebit Software


Twiddlebit software was originally provided as shareware and required payment and a registration code to be entered into the software to enable full use. As of November 2017 all software is now freeware.

Download Plan for Windows 3.05, which is a fully functional freeware version. If you are using an earlier shareware version of any of our software and need a registration code, feel free to use a registration code provided on this site.


Twiddlebit Software was formed in May 1999. However some of the products which Twiddlebit Software market have been available as shareware since 1994.

Twiddlebit market shareware software for the Microsoft Windows, Pocket PC, Handheld PC, Symbian and Psion devices.

The leading products which Twiddlebit market are the Plan product range providing a project planning application across a range of platforms.