Absoft
   Workstation, cluster, and desktop Fortran, C and C++ compilers and development tools.
   http://www.absoft.com/

Avocet Systems
   C compilers, macro-assemblers, simulators, RTOS, and in-circuit emulators for embedded processors.
   http://www.avocetsystems.com/

Bloodshed Software
   Free C, C, Pascal environment and compilers. Programmers resources: Delphi, C, Pascal. Freeware.
   http://www.bloodshed.net/

Code On The Fly
   Aim to foster your understanding of Dynamic Compiling, Dynamic Optimization and Code Morphing technologies.
   http://www.codeonthefly.com/

CodePlay
   A developer of highly optimizing compilers.
   http://www.codeplay.com/

CodeScape
   Development and debug tools for STMicro ST40, Hitachi SH4, SH3, SH3-DSP, SH2-DSP and SH2.
   http://www.codescape.com/

Compiler Consulting Resources
   Individuals and Companies that Provide Compiler Consulting Services.
   http://www.compilerconnection.com/consultants/consultants.htm

DDC-I
   A supplier of Ada, C, C++, JOVIAL and multi-language compilers for safety critical embedded software applications. DDC-I also provides Consulting, Training and FAA Certification.
   http://www.ddci.com/

Digital Mars C and C++ Compilers
   C and C++ compilers for Win32, Win16, and DOS.
   http://www.digitalmars.com/

Edison Design Group
   Compiler front ends for the OEM market. Company profile, customer list, descriptions of Java, C++, FORTRAN compilers.
   http://edg.com/

Excelsior, LLC
   Package and bespoke compilers, cross-compilers, source to source translators, debuggers, and other tools for various languages, CPUs, and operating systems. Manufacturer of the JET Java to native code compiler.
   http://www.excelsior-usa.com/

Green Hills Software
   Compilers and Software Development Tools for Embedded Applications. MULTI integrated development environment, and C, C++, EC++, and Ada optimizing compilers, for embedded applications, target powerpc, 68k, x86, mips, sh, v800, alpha, i960, sparc, and arm.
   http://www.ghs.com/

HP InfoTech S.R.L.
   Makes CodeVisionAVR C compiler, integrated development environment (IDE), automatic program generator, ChipBlasterAVR in-system programmer, code wizard, for Atmel AVR microcontrollers. [commercial]
   http://www.hpinfotech.ro/

J.M.K S.F. Software Technologies
   Vendor of DOS and Linux scripting languages including RapidBATCH and Turbo PL.
   http://www.jmksf.de/

Micro-Processor Services, Inc.
   Software translators, converters, and translation services.
   http://www.mpsinc.com/

Pennington Systems Incorporated
   develops and markets software engineering automation software, including XTRAN, our expert system for analyzing, translating, and re-engineering assemblers, 3GLS, 4GLS, command languages, database languages, and text.
   http://www.pennington.com/

ProFactor Software
   Provider of productivity tools for C and C++ programmers. Product information and 14-day trials. Currently featuring a source code formatter.
   http://www.profactor.co.uk/

Semantic Designs
   Provides front ends (parsers/analyzers and transformation tools) for conventional programming languages such as C, C++, COBOL and Java. Links to description of underlying DMS engine and related tools.
   http://www.semdesigns.com/Products/FrontEnds/index.html

Vendor of 8051 development tools
   C Compiler for 8051, Avr, Evaluation Boards, Single Board Computer, Embedded Softwares, Simulators
   http://www.spjsystems.com/