Synopsys has grown significantly by acquiring companies in electronic design automation and related fields.
Virtio Corporation was founded in 1999 and based in Campbell, California, USA with development centers in Campbell and Livingston, Scotland, UK. Virtio Corporation was a pioneering creator of Virtual SoC Platforms for early embedded software development. Virtio Corporation was acquired by Synopsys in May 2006.
CoWare development was initiated by the Interuniversity Microelectronics Centre in Belgium as an internal project in 1992; it spun off as an independent company, supplying platform-driven electronic system-level (ESL) design software and services, four years later. CoWare was acquired by Synopsys in February 2010.
Code Dx was an American software technology company active from 2015 to 2021. The company's self-titled flagship product is a vulnerability management system that combines and correlates the results generated by a wide variety of static and dynamic testing tools. It was acquired by Synopsys in 2021.
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Avanti Corporation
Avanti Corporation (styled as "Avant!") was founded when several former Cadence Design Systems employees bought the startup ArcSys, which had previously merged with Integrated Silicon Solutions (ISS), gaining Avanti its design rule checking and layout versus schematic tool Hercules (including 3D silicon structure modeling). Avanti then bought Compass Design Automation, which had fully integrated IC design flow and ASIC libraries, especially its place and route tool, which Avanti reworked to create Saturn and Apollo II. Avanti also bought TMA (Technology Modeling Associates), which brought its pioneering TCAD and Proteus optical proximity correction tools. The acquisition of Avanti was Synopsys' most significant and controversial acquisition. At the time, Avanti was the No. 4 company in the EDA industry, and was struggling with a major lawsuit from Cadence for software theft. Avanti was merged into Synopsys on June 6, 2002, during the litigation. Synopsys paid Cadence about $265 million to end that litigation. Soon after the settlement, the California Supreme Court upheld the lower court's earlier decision. Synopsys then paid $26.1 million to Silvaco to settle two of Silvaco's three lawsuits against Meta-Software, earlier purchased by Avanti, and its president. The lawsuits were filed in 1995 and inherited by Avanti.
Optical Research Associates
Synopsys acquired Optical Research Associates (ORA) in 2010, including its software products CODE V and LightTools.
Magma Design Automation
Synopsys agreed to buy its competitor Magma Design Automation for $507 million in an all-cash deal in November 2011.
The two companies previously faced drawn-out, back-and-forth patent disputes, which began in 2004. These disputes arose when Synopsys claimed one of Magma's co-founders, Lukas van Ginneken, developed technology for Magma products that was based on work he conducted while employed at Synopsys. While van Ginneken later acknowledged the claim, Magma and Synopsys continued disputing each other's patents. The litigations were eventually settled in 2007, with Magma paying Synopsys $12.5 million, and the companies agreeing to cross-license the disputed patents to each other.
Ciranova
Ciranova was an EDA company which focused on analog design automation. The company authored the Python-based PyCell software now central to IPL Alliance iPDK parameterized cells (used by many foundries such as TSMC), and also developed an automatic analog layout tools called Helix. Ciranova was acquired by Synopsys in 2012.
Novas Software
Novas Software was a company founded in 1996 to address debugging of chip designs. Novas was purchased by Taiwan-based EDA company SpringSoft in May 2008. SpringSoft and Novas were acquired by Synopsys in 2012.
Numerical Technologies
Numerical Technologies, Inc. was a San Jose-based electronic design automation public (NASDAQ: NMTC) company. The company was primarily known for its intellectual property, software tools and services covering phase-shifting mask technology. On March 3, 2003, it was acquired by Synopsys for $250 million.
SpringSoft
SpringSoft is a software company that developed VLSI design and debugging software. The company was founded with a grant from the Taiwanese National Science Council in February 1996.
In 1997, SpringSoft established Novas Software in Silicon Valley to market Springsoft's VLSI Debugging software. SpringSoft created a custom layout tool called Laker and a US-based company called Silicon Canvas. In May 2008, SpringSoft purchased Novas Software Silicon Canvas and combined them to form the wholly owned subsidiary SpringSoft USA. SpringSoft employed over 400 people with office locations across the world.
Synopsys announced its acquisition of SpringSoft in 2012.
Synplicity
Synplicity Inc. was a supplier of software for the design of programmable logic devices (FPGAs, PLDs, and CPLDs) used for communications, military/aerospace, consumer, semiconductor, computer and other electronic systems. Synplicity's tools provided logic synthesis, physical synthesis, and verification functions for FPGA, FPGA-based ASIC prototyping, and DSP designers. Synplicity was listed on Nasdaq until it was acquired by Synopsys for $227 million in a transaction finalized on May 15, 2008.
ARC International
ARC International PLC was the designer of ARC (Argonaut RISC Core) embedded processors, which were widely used in SoC devices for IoT, storage, digital home, mobile, and automotive applications. Virage Logic, which acquired ARC International in 2009, was sold to Synopsys in 2010.
In January 2026, it was announced that Synopsys was selling its processor IP product lines, including the ARC and ARC-V CPU IP, to GlobalFoundries.
MOSAID Semiconductor IP
Synopsys announced the acquisition of MOSAID's Semiconductor IP business for $15M in July 2007. Assets included double-data-rate (DDR) memory controllers and PHY semiconductor IP products.
Coverity
In February 2014, Synopsys agreed to acquire static code analysis vendor Coverity for $375 million. Synopsys relied on Coverity's products for around ten years prior to the acquisition, helping improve software security by finding and fixing defects in software code before its release.
Coverity's open-source Coverity Scan tool was hacked and used for cryptocurrency mining in February 2018. Synopsys took down the service for four weeks and confirmed the incident did not affect any of its corporate network and found no evidence of data abuse of its open-source users.
Codenomicon
In 2015 Synopsys acquired the Finnish developer of security software Codenomicon. Codenomicon had itself previously acquired the Finnish software company Clarified Networks in 2011.
Cigital
Synopsys announced the acquisition of Cigital along with its 2015 spinoff Codiscope in November 2016. The suite of its software security products became part of Synopsys' software integrity group.
Sidense
Synopsys announced the acquisition of Ottawa-based-Sidense in October 2017. Sidense had developed a One-Time Programmable (OTP) Non-Volatile Memory (NVM) IP solution proven in technologies from 180 nm down to 16 nm. A patented split-channel 1T-Fuse bit-cell offers low power, small area, and access times as fast as 10ns.
QuantumWise
In 2017 Synopsys acquired the atomic-scale modeling software company QuantumWise (former Atomistix), which provides tools for quantum-based and classical simulations in the field of material science.
Black Duck Software
Black Duck Software was a privately held company focused on automating the process of identifying and creating an inventory of open source code used in software applications, as well as detecting known security vulnerabilities and license compliance issues. It ran the Open Hub website. The company was founded by Doug Levin. Black Duck Software was acquired by Synopsys in December 2017 for $565 million and integrated into the Software Integrity Group (SIG) until it was spun out. In October 2024, the private equity firms Clearlake Capital and Francisco Partners completed the acquisition of the Synopsys Software Integrity Group (SIG) to reestablish Black Duck Software as an independent standalone application security company. The transaction, first announced in May 2024, was valued at up to $2.1 billion, including $475 million in cash.
WhiteHat Security
In April 2022, Synopsys announced the acquisition of WhiteHat Security for $330 million. WhiteHat Security was founded in 2001 and provides application security as well as insights for DevOps teams.
PikeTec
In 2023, Synopsys completed the acquisition of PikeTec, a provider of verification and testing tools for automotive software.
Intrinsic ID
In March 2024, Synopsys announced it had acquired the Internet of things digital authentication company Intrinsic ID for an undisclosed amount.
Ansys
In January 2024, Synopsys announced its intention to acquire engineering software company Ansys for $35 billion. That would expand Synopsys' prominence in simulation software and systems design for chip designers, automobiles, airplanes. The companies have had a research and development partnership since 2017.
The Federal Trade Commission required Synopsys to divest certain assets as part of the acquisition. Under the proposed consent order, Synopsys agreed to divest its optical and photonic software tools, while Ansys divested its PowerArtist power consumption analysis tool. In September 2024, Synopsys announced it would sell its optical systems division to Keysight Technologies to address regulatory concerns.
In January 2025, Synopsys announced that the European Commission had approved its proposed $35 Billion acquisition of Ansys in Phase 1, marking significant progress in obtaining regulatory clearances for the merger. The company also reported that the UK Competition and Markets Authority had provisionally accepted remedies for Phase 1 approval, and the waiting period under the U.S. Hart-Scott-Rodino Antitrust Improvements Act had expired. While actively working with the U.S. Federal Trade Commission (FTC) on proposed remedies review, Synopsys noted that China's State Administration for Market Regulation had officially accepted their merger filing. The acquisition aimed to address growing customer demands for integrated Electronic Design Automation and Simulation and Analysis software solutions. The acquisition was completed on July 17, 2025.
