C Level Design
Offers a design and verification environment for C/C++ with synthesis to VHDL and Verilog code.
Calyptech Design Services
Offers ASIC and FPGA design and verification services, drivers and tools. Includes product and service overview and PDF detailed product specifications available.
CAST, Inc.
Provides a broad line of general purpose IP cores for electronic design (also called silicon intellectual property, SIP, or virtual components, VCs). Includes processors, bus and …
Doulos Ltd
Training and consultancy across Europe in VHDL, Verilog, SystemC, Perl and Tcl/Tk. Offers free resources for hardware designers.
Exemplar Logic, Inc.
Provides LeonardoSpectrum which is a CPLD, FPGA and desktop ASIC synthesis solution.
eXsultation
Specialize in full turn-key, customer facility training programs in VHDL, Verilog,C++ modeling, formal verification, and FPGA design.
Freeware Verilog & VHDL
This is the home page for a Freeware Verilog,VHDL and Analog Mixed Signal project (a.k.a. the V-2000 project, still in its infancy).
Green Mountain
VHDL compilers and design environments, including Windows, DOS and Linux support.
Sandstrom Engineering
HDL pre-synthesis tools which check code for synthesizability. Then suggest replacement code where problems are found.
Sutherland HDL, Inc.
Provides Verilog HDL and Verilog PLI training workshops and consulting services.
SynaptiCAD
Provides Verilog, VHDL, TDML, logic analyzer, pattern generator, and SPICE tools.
Verilog Dot Com
Verilog resources page. Includes FAQ, books and links. Also verilog aware Emacs add on.