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.mpeforth.com/

AM Research, Inc.
- Full-service provider of hardware and software for embedded control applications. Code is open source, LGPL. Software based on Forth.
- http://www.amresearch.com/

Offete Enterprises, Inc.
- Custom firmware engineering, programming, consulting; distributes Forth software (versions for many CPUs), documentation, hardware (processors), evaluation kits, links. Run by Dr. C.H. Ting, active supporter, former board member of Forth Interest Group.
- http://www.offete.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

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/

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

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/

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

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

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/

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

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/