- EPIC Design Technology, Inc.
- Escalade Corp.
- eSilicon Corporation
- ESL assets of Agility
- ESL assets of Celoxica
- Esperan Ltd.
- eTop Design Automation
- EuroMIPS Systems
- European Design Center
- European Microelectronics Academy
- EV Group
- Evans Analytical Group
- Evatronix IP Design Business
- Evatronix SA
- EverCAD Corporation
- Everest Design Automation, Inc.
- Excellent Design Inc.
- Excellicon Inc.
- Exemplar Logic, Inc.
- Eximius Design
- Expedera
- ExperTest
- ExpertIO, Inc.
- Expressive Systems
- Extreme DA, Corp.
- Fairchild Semiconductor
- Falanx Microsystems AS
- FEI – Knights Technology
- FEI Company
- Fenix Design Automation
- Ferric Semiconductor Inc.
- Fidus Systems Inc.
- First Earth Ltd.
- FishTail Design Automation, Inc.
- Flex Logix Technologies, Inc.
- Flexras Technologies SAS
- Flomerics EM software
- Flomerics Group PLC
- Flometrics group Plc
- Flowmaster Ltd.
- FormFactor
- Forte Design Systems
- FPGA technology of Kilopass
- Fractal Technologies
- Fraunhofer IIS EAS
- Freescale – Virtual Garage
- Freescale Semiconductor
- Frequency Technology
- Frontier Design
- Frontline Design Automation, Inc.
