For more information see https://github.com/clach04/puren_tonbo/wiki/Tombo
This repo contains the "recent" history of Tombo for Windows Desktop (for Windows CE, PocketPC, and Mobile see https://github.com/clach04/tombo_cvs).
The code does build under Windows with the Microsoft Visual Studio C/C++ compiler. However it relies on some third-party libraries and the source code is NOT in this repo, but 32-bit pre-built lib and DLLs are included in the source code repo 😢
A command line tool, TomboCrypt, can be built on other platforms both 64-bit and 32-bit using alternative compilers. For example GCC.
For more portable, robust and easier-to-maintain tools see https://github.com/clach04/puren_tonbo
Also checkout Tombo-U which adds some Unicode (limited to BMP) support to Tombo. #8