Forth, Inc.  
   Premier vendor of Forth tools and programming services since 1973. Home of SwiftForth Windows development system, SwiftX cross-compilers for embedded systems, Forth books, expert programming services, and Forth programming courses.
   http://www.forth.com/

Forth Systems Programming  
   Paul E. Bennett, Forth based HIDECS Consultancy.
   http://www.amleth.demon.co.uk/forth/

HARDCODE Development  
   One man German consulting firm, several languages including Forth.
   http://www.hardcode.de/

T-Recursive Technology  
   Embedded systems consultant for small (8/16-bit) and distributed microprocessor systems. Contract hardware and software development for most microcontrollers. Specialties: Forth, Assembly, C.
   http://www.zetetics.com/recursiv/

ATHENA Programming, Inc.  
   California corporation founded 1966 by Jack Perrine, to support FORTRAN V compiler for Univac/Sperry/Unisys 1100 series mainframes. In 1975, switched to native Forth work.
   ftp://ftp.uu.net/vendor/minerva/default.htm

COMSOL: Computer Solutions Ltd.  
   European supplier of tools for microprocessor designers and programmers. Makes chipFORTH, JForth, a Transputer Forth, and MIMIC. Forth consulting. See the application stories. UK distributor for FORTH Inc.
   http://www.computer-solutions.co.uk/chipdev/forth.htm

Quartus Handheld Software  
   Makes Quartus Forth, and compilers, applications and other productivity enhancement software for Palm, PalmPilot, daVinci, Visor, and other handheld computers. Also good list of programming books.
   http://www.quartus.net/

MicroProcessor Engineering Ltd.  
   More real, less time. Focus: realtime and embedded systems. Makes tools for full development cycle (hardware, software, firmware), for a wide range of embedded targets.
   http://www.mpeltd.demon.co.uk/

Creative Consulting for Research and Education: CCRE  
   Makes kForth and other finely crafted computing tools for use by students, educators, and researchers in the physical sciences and engineering. Provides links to online documents as educational resources for teachers and students.
   http://www.ccreweb.org/

Inventio Software  
   Specialist instrumentation design, programming in Forth, C, C++.
   http://www.inventio.co.uk/

Offete Enterprises, Inc.  
   Run by Dr. C.H. Ting, active supporter and former board member of Forth Interest Group. Many products, versions of Forth for many systems, documentation on some popular public domain Forth systems. Markets MuP21 microprocessor.
   http://www.ultratechnology.com/offete.html

LenZ Computer Consulting  
   Len Zettel: general computer links, Forth links, some personal views, family information.
   http://www.lenzettel.com/

Mountain View Press: The Forth Source  
   Dedicated to providing educational software and hardware models of the programming language Forth with documentation for students and teachers: catalog, FAQs, history, selected papers, Hindsight essays, Forth Guide.
   http://theforthsource.com/

AM Research Inc.  
   Full-service provider of both hardware and software for embedded control applications. Code released under the LGPL. Software based on Forth.
   http://www.amresearch.com/

Extensible Systems, Products & Technology: ESPTechnology  
   Forth books, implementations, and code for PCs and embedded systems; Offete publications and products. Also sells binary display clocks.
   http://www.esptec.com/Forth/index2.html