Alex Bateman has released a new version of his landmark software, Tess.
Tess allows you to create all sorts of tilings, and modifications of those tilings- so you can explore possibilities without having to fold it all out in paper, first! Also, this new version provides PDF export capability, which is a major plus for windows users.
Tess is a Perl application, and will run on any Perl-capable system with a bit of tweaking. (This means you, Linux/FreeBSD/MacOSX users.) Or, if you’re running windows, you can download a standalone version, which will run on it’s own without requiring any Perl resources. Both of these are available to download from Alex’s website.