PLEASE NOTE - as of January 2022, we are no longer selling registration keys for Markin and TexToys.

The product information on this site is now provided for information only. We will continue to support existing registered users until at least July 2022, but cannot support software installations on Windows11. If you wish to continue to use Markin or TexToys, please do not upgrade to Windows11.

This decision has been taken because we are not confident of being able to maintain and update our software in a way which fulfils Microsoft's requirements for Windows 11 software. We may eventually provide free versions of the programs, with strictly limited support and update provision.

If you need to have your existing registration key re-sent, or you are keen to use the programs even without a proper commitment to having support and updates, we may be prepared to provide a registration key on a strictly limited basis - please contact us by email for details.

TexToys v3.1 Download Page

TexToys is supplied as a downloadable shareware program. This means that you can download and install it free of charge, as many times as you like. To download the program, click on the Download link below.

The current version of TexToys is 3.1 Release 0 Build 9 - or

Download TexToys31.exe - 1.8 Mb


The file you downloaded is an installation program - to install TexToys, simply run the file (by double-clicking on it), and follow the on-screen instructions. By default, the programs will be installed in C:\Program Files\TexToys3 - for more information, see the Readme file which appears there.

If you want to read the Readme file before downloading, you can view a copy here.


The download is a complete working version of the full program, but it is restricted so that it can only be used to create short Rhubarb and Sequitur exercises. Also, it cannot upload completed exercises to the hosting system (see Scores and Results).