- Verplex Systems Inc.
- VeSys Limited
- VHDL International
- videantis GmbH
- Video Logic
- Viewlogic PCB/Systems Unit
- Viewlogic Systems, Inc.
- Virage Logic Corporation
- VirSim Tool
- Virtio Corporation
- Virtual Chips Inc.
- Virtual Machine Works
- Virtual Silicon Technology
- VivEng
- Vizef Ltd.
- VLAB Works
- VLSI Technology Inc.
- Volcano Communications Technologies AB
- VR Information Systems
- Vreelin Engineering Inc.
- VSIA
- Vtool
- Wavetek Microelectronics Corporation
- Western Digital
- Westport Technologies Inc.
- Whitesmiths Ltd
- Winbond Electronics Corporation
- WinterLogic, Inc.
- Wolfspeed, a Cree Company
- XCAT Inc.
- Xentec Inc.
- Xilinx Inc.
- XS Embedded GmbH
- XtremeEDA
- Xyalis
- Xynetix Design Systems, Inc
- yieldHub
- Zeelan Technology
- Zeland Software, Inc.
- Zenasis Technology
- Zentera Systems, Inc.
- Zerosoft Inc.
- Zocalo Tech, Inc.
- Zuken Inc.
- Zycad Corporation
- Zycad System VHDL Unit
- Zycad TSS
