Field Programmable Gate Array (FPGA)

Manufactures of programmable logic devices:
Actel
Altera
Cypress
Lattice
Quick Logic
Triscend
Xilinx

Syntesize Tools, Simmulation Software:
Aldec
Celoxica
Innoveda
Green Mountain Computing System Inc
Model Technology
Mentor Graphics
Synopsys
Synplicity

Software provided Mathematcal functions, DSP Algorithm on FPGA:
Mathworks: Developers of Mathlab and Simulink for technical computing

Design Services, Demo boards, IP-core and solutions:
Alpha Data Parallel Systems
Cast Inc
Flextronics
Memec Design Services
Nallatech
Programmable Logic Competence Center (in German)
Xyron Semiconductor

Disscusion Forums, News Groups information related to Design and Develop FPGA/PLD devices:
Open Cores

Schools Training Course:
Exsultation eXsultation is a high-tech training organization specializing in courses in VHDL/Verilog/C++ Hardware Verification for ASICs and FPGAs at both the design entry and verification levels.