The official OSTC website:

• The HeinrichsWeikamp official OSTC site, the support forum, and the OSTC page.

Other OSTC-compatible softwares:

• Sven Knoch‘s  Diving Log logbook software to review your dive profiles,  print, share, or replay them. Compatible with multiple dive computers.
• The new Subsurface free open-source logbook software by Dirk Hohndel and Linus Torwalds, based on libdivecomputer to connect various computers.
• The JDiveLog free open-source portable logbook software, also compatible with various computers.
• OSTC Tools, from Robert Angermayr is a set of free tools under development on windows, to manage your dive computer (settings, dive profiles).
• Artur Wróblewski‘s Kenozooid is a free command line tool based on Python for the Linux platform, to analyse your logbook, make statistics, and plan your next dives.

About OSTC and OSTC Planner :

• Robert Angermayr did a great compilation of all the parameters you can configure. Latest stable version available in English, German, and French !
• Laurent Bardassier wrote nice course materials in French, for «Getting Started» sessions.