- 0-In Design Automation Inc.
- 3Soft Corporation
- @HDL
- Aachen University of Technology
- ACAD Corp
- Accel Technologies Inc.
- Accelerant Networks, Inc.
- Accelerated Technology (UK) Ltd.
- Accelerated Technology Inc.
- Accelicon Technologies
- Accellera
- Accellera Systems Initiative
- Accellera UCIS WG
- Accent S.R.L
- Accolade Design Automation
- ACEO Technology
- Achronix Semiconductor Corporation
- Acorn Computer Group
- Actel Corp.
- Adapt IP
- ADAS Software
- Adelante Technology
- Adesto Technologies Corp.
- Adicsys
- Advanced CAM Technologies, Inc.
- Advanced Micro Devices (AMD)
- Advanced Microelectronics
- Advanced RISC Machines Ltd.
- Advanced Technology Center
- Advanced Test Technology, Inc.
- Advantest Corporation
- AGGIOS, Inc.
- Agilent EEsof EDA
- Agilent Technologies
- Agility Design Solutions
- Agnisys, Inc.
- Alarity Corporation
- Alchemy Semiconductor
- Aldec, Inc.
- Algotochip Corporation
- Allant Software
- Allegro DVT
- Alphabit
- Alphawave Semi
- Alta Group of Cadence
- Altera Corporation
- Altium, Inc.
- Altius Solutions Inc.
- Altos Design Automation, Inc.
- Ambit Design Systems, Inc.
