Card Access and Security System  
   Entry-Master product line of Access Control, Revenue Control, and Security Management Software. THEOS-based, but fully integrated with Windows 3.x/95/98/NT. Web interface soon to come.
   http://www.entry-master.com

THEOS Software (GB)  
   UK distributors of THEOS 32 Multiuser OS, and development languages. Over 10 years experience in THEOS products in Great Britain.
   http://www.theos-gb.com

THEOS Software Corp.  
   A multi-user, 32 bit OS designed for business. Many add-on features available, such as multi-user DOS/Windows and TCP/IP support for setting up web server. Since its inception in the 1970s as OASIS, it has steadily improved and added options while keeping
   http://www.theos-software.com/

Canary Islands THEOS  
   Centro de Cálculo de Tenerife, S.L. THEOS VAR since OASIS time: system software, freeware utilities.
   http://www.cecalte.es

Halliburton Systems Inc  
   Custom THEOS Programming
   http://www.hsix.com

Freeware sources  
   Links to several requested THEOS programs.
   http://www.theos-software.com/download/

AST: Advanced Software Technologies  
   THEOS master distributor for Spain. Mostly in Spanish, but some useful English material, if one searches a bit.
   http://www.theos.es/