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List of acquisitions by Cisco

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Cisco Systems, Inc., commonly known as Cisco, is an American computer networking company. Cisco made its first acquisition in 1993, which was followed by a series of further acquisitions.

Founded in 1984, Cisco did not acquire a company during the first seven years of its existence; but, on September 24, 1993, Cisco acquired Crescendo Communications, a LAN switching company. Following the first Cisco takeover purchase, acquisitions have constituted 50 percent of the company's business activity.

The company's largest acquisition as of October 2023 is the purchase of Splunk, a software company that develops software for the analysis and monitoring of machine-generated data, US$28 billion. Cisco's previous largest acquisition was tied between Cerent Corporation and Scientific Atlanta for $6.9 billion in 1999 and 2005 respectively.

The majority of companies acquired by Cisco are based in the United States (U.S.) and a total of 149 companies had been acquired as of March 2011. Most of the companies acquired by Cisco are related to computer networking, with several LAN switching and Voice over Internet Protocol (VoIP) companies included in the list of acquisitions.

01List

Each acquisition is for the respective company in its entirety, unless otherwise specified, and the date of the agreement between Cisco Systems and the subject of the acquisition is listed. The value of each acquisition is listed in the US$ currency because Cisco Systems is headquartered in California, U.S.

The majority of its products and business units have come from acquisitions, with Cisco Systems spending more than $70 billion to acquire approximately 218 organizations as of October 2021.

Date Company Business Country Value (USD) Adjusted (USD) References
September 24, 1993 Crescendo Communications LAN switching  United States $94,500,000 $211,000,000
July 12, 1994 Newport Systems Solutions Router $95,000,000 $206,000,000
October 24, 1994 Kalpana LAN switching $204,000,000 $443,000,000
December 8, 1994 LightStream ATM switching $120,000,000 $261,000,000
August 10, 1995 Combinet Remote office routers $114,200,000 $241,000,000
September 6, 1995 Internet Junction Gateway $5,500,000 $12,000,000
October 27, 1995 Network Translation Firewalls $30,000,000 $63,000,000
November 6, 1995 Grand Junction Networks LAN switching $345,000,000 $729,000,000
January 23, 1996 TGV Software Internet software company $115,000,000 $236,000,000
Updated on ClearOS' web page: ClearOS Pedigree
April 22, 1996 StrataCom ATM switching $4,000,000,000 $8,211,000,000
July 22, 1996 Telebit Modems $200,000,000 $411,000,000
August 6, 1996 Nashoba Networks LAN switching $100,000,000 $205,000,000
September 3, 1996 Granite Systems Computer networking $220,000,000 $452,000,000
October 14, 1996 Netsys Technologies Network simulation $79,000,000 $162,000,000
December 1996 Metaplex Computer networking  Australia , ,
March 26, 1997 Telesend Broadband Internet access  United States , ,
June 9, 1997 Skystone Systems Synchronous optical networking  Canada $89,100,000 $179,000,000
June 24, 1997 Global Internet Software Group Firewall  United States $40,250,000 $81,000,000
June 24, 1997 Ardent Communications Broadband Internet access $156,000,000 $313,000,000
September 2, 1997 Integrated Network Digital subscriber line , ,
December 22, 1997 LightSpeed International Voice over Internet Protocol $160,000,000 $321,000,000
February 18, 1998 WheelGroup Computer security $124,000,000 $245,000,000
March 10, 1998 NetSpeed Broadband Internet access $236,000,000 $466,000,000
March 11, 1998 Precept Software Internet television $84,000,000 $166,000,000
May 4, 1998 CLASS Data Systems Computer networking $50,000,000 $99,000,000
July 28, 1998 Summa Four LAN switching $116,000,000 $229,000,000
August 21, 1998 American Internet Computer networking $56,000,000 $111,000,000
September 15, 1998 Clarity Wireless Wireless networking $157,000,000 $310,000,000
October 14, 1998 Selsius Systems Voice over Internet Protocol $145,000,000 $286,000,000
December 2, 1998 Pipelinks Synchronous optical networking $126,000,000 $249,000,000
April 8, 1999 Fibex Systems Digital loop carrier $250,000,000 $483,000,000
April 8, 1999 Sentient Networks Voice over Internet Protocol $195,000,000 $377,000,000
April 13, 1999 GeoTel Communications $2,000,000,000 $3,865,000,000
April 28, 1999 Amteva Technologies $170,000,000 $329,000,000
June 17, 1999 TransMedia Communications Gateways $407,000,000 $787,000,000
June 29, 1999 StratumOne Communications Synchronous optical networking $435,000,000 $841,000,000
August 16, 1999 Calista Private branch exchange $55,000,000 $106,000,000
August 18, 1999 MaxComm Technologies Voice over Internet Protocol $143,000,000 $276,000,000
August 26, 1999 Monterey Networks Synchronous optical networking $500,000,000 $966,000,000
August 26, 1999 Cerent $6,900,000,000 $13,335,000,000
August 31, 1999 IBM Networking Hardware Division Computer networking $2,000,000,000 $3,865,000,000
September 15, 1999 COCOM A/S Cable modems  Denmark $65,600,000 $127,000,000
September 22, 1999 Webline Communications Contact management  United States $325,000,000 $628,000,000
October 26, 1999 Tasmania Network Systems Web cache $25,000,000 $48,000,000
November 9, 1999 Aironet Wireless Communications Wireless LAN $799,000,000 $1,544,000,000
November 11, 1999 V-Bits Digital video $128,000,000 $247,000,000
December 16, 1999 Worldwide Data Systems Information technology consulting $25,500,000 $49,000,000
December 17, 1999 Internet Engineering Group (IEng) High performance routing software $25,000,000 $48,000,000
December 20, 1999 Pirelli Optical Systems Fiber-optic communication  Italy $2,150,000,000 $4,155,000,000
January 19, 2000 Compatible Systems Virtual private networking  United States $317,000,000 $593,000,000
January 19, 2000 Altiga Networks $250,000,000 $467,000,000
February 16, 2000 Growth Networks Chipsets $355,000,000 $664,000,000
March 1, 2000 Atlantech Technologies Network management  United Kingdom $180,000,000 $337,000,000
March 16, 2000 JetCell Mobile telephones  United States $200,000,000 $374,000,000
March 16, 2000 infoGear Technology Information management $301,000,000 $563,000,000
March 29, 2000 SightPath Content delivery $800,000,000 $1,496,000,000
April 11, 2000 PentaCom LAN switching  Israel $118,000,000 $221,000,000
April 12, 2000 Seagull Semiconductor Computer networking $19,000,000 $36,000,000
May 5, 2000 Arrowpoint Communications LAN switching  United States $5,700,000,000 $10,657,000,000
May 12, 2000 Qeyton Systems Wavelength-division multiplexing  Sweden $800,000,000 $1,496,000,000
June 5, 2000 HyNEX Internet access  Israel $127,000,000 $237,000,000
July 7, 2000 Netiverse LAN switching  United States $210,000,000 $393,000,000
2001 AuroraNetics Computer networking $150,000,000 $280,000,000
July 25, 2000 Komodo Technology Voice over Internet Protocol $175,000,000 $327,000,000
July 27, 2000 NuSpeed Internet Systems iSCSI $450,000,000 $841,000,000
August 1, 2000 IPmobile Mobile software $425,000,000 $795,000,000
August 31, 2000 PixStream Media player (application software) $369,000,000 $690,000,000
September 28, 2000 IPCell Technologies Voice over Internet Protocol $200,000,000 $374,000,000
September 28, 2000 Vovida Networks $169,000,000 $316,000,000
October 20, 2000 CAIS Software Integrated development environment $170,000,000 $318,000,000
November 10, 2000 Active Voice Communication software $266,000,000 $497,000,000
November 13, 2000 Radiata Wireless networking  Australia $295,000,000 $552,000,000
December 14, 2000 ExiO Communications  United States $155,000,000 $290,000,000
July 27, 2001 Allegro Systems Virtual private networks $181,000,000 $329,000,000
May 1, 2002 Hammerhead Networks Computer networking $173,000,000 $310,000,000
May 1, 2002 Navarro Networks $85,000,000 $152,000,000
July 25, 2002 AYR Networks $113,000,000 $202,000,000
August 20, 2002 Andiamo Systems Data storage $2,500,000,000 $4,475,000,000
October 22, 2002 Psionic Software Intrusion detection $12,000,000 $21,000,000
January 24, 2003 Okena $154,000,000 $270,000,000
March 19, 2003 SignalWorks Echo cancellation $13,500,000 $24,000,000
March 20, 2003 Linksys Computer networking $500,000,000 $875,000,000
November 12, 2003 Latitude Communications Web conferencing $80,000,000 $140,000,000
March 12, 2004 Twingo Systems Computer security $5,000,000 $9,000,000
March 22, 2004 Riverhead Networks $39,000,000 $66,000,000
June 17, 2004 Procket Networks Routers $89,000,000 $152,000,000
June 29, 2004 Actona Technologies Data storage $82,000,000 $140,000,000
July 8, 2004 Parc Technologies Routers  United Kingdom $9,000,000 $15,000,000
August 23, 2004 P-Cube Service Delivery Platform  Israel $200,000,000 $341,000,000
September 9, 2004 NetSolve Information technology  United States $128,500,000 $219,000,000
September 13, 2004 dynamicsoft Communication software $55,000,000 $94,000,000
October 21, 2004 Perfigo Computer networking $74,000,000 $126,000,000
November 17, 2004 Jahi Networks Network management $16,000,000 $27,000,000
December 9, 2004 BCN Systems Routers $34,000,000 $58,000,000
December 20, 2004 Protego Networks Network security $65,000,000 $111,000,000
January 12, 2005 Airespace Wireless LAN $450,000,000 $742,000,000
April 14, 2005 Topspin Communications LAN switching $250,000,000 $412,000,000
April 26, 2005 Sipura Technology Voice over Internet Protocol $68,000,000 $112,000,000
May 23, 2005 Vihana Semiconductors $30,000,000 $49,000,000
May 26, 2005 FineGround Networks Network security $70,000,000 $115,000,000
June 14, 2005 M.I. Secure Corporation Virtual private networks $13,000,000 $21,000,000
June 27, 2005 Netsift Computer networking $30,000,000 $49,000,000
July 22, 2005 KISS Technology Entertainment technology  Denmark $61,000,000 $101,000,000
July 26, 2005 Sheer Networks Service management  United States $97,000,000 $160,000,000
September 30, 2005 Nemo Systems Computer networking $12,500,000 $21,000,000
November 18, 2005 Scientific Atlanta Digital cable $6,900,000,000 $11,375,000,000
November 29, 2005 Cybertrust Information gathering $14,000,000 $23,000,000
March 7, 2006 SyPixx Networks Surveillance $51,000,000 $81,000,000
June 8, 2006 Metreos Voice over Internet Protocol $28,000,000 $45,000,000
June 8, 2006 Audium $19,800,000 $32,000,000
July 6, 2006 Meetinghouse Computer security $43,700,000 $70,000,000
August 21, 2006 Arroyo Video Solutions Video on demand $92,000,000 $147,000,000
October 10, 2006 Ashley Laurent Gateways , ,
October 25, 2006 Orative Mobile software $31,000,000 $50,000,000
November 13, 2006 Greenfield Networks Semiconductors , ,
December 15, 2006 Tivella Digital signage / IPTV , ,
January 4, 2007 IronPort Computer security $830,000,000 $1,289,000,000
February 9, 2007 Five Across Social networking service , ,
February 21, 2007 Reactivity Web services $135,000,000 $210,000,000
March 5, 2007 Utah Street Networks Social networking service , ,
March 13, 2007 NeoPath Data storage , ,
March 15, 2007 WebEx Web conferencing $3,200,000,000 $4,969,000,000
March 28, 2007 SpansLogic Computer networking , ,
May 21, 2007 BroadWare Technologies Surveillance , ,
September 18, 2007 Cognio Mobile software , ,
September 27, 2007 Latigent Business performance management , ,
October 23, 2007 Navini Networks WiMAX $330,000,000 $512,000,000
November 1, 2007 Securent Digital rights management $100,000,000 $155,000,000
April 8, 2008 Nuova Systems, Inc. Computer networking $678,000,000 $1,014,000,000
June 10, 2008 DiviTech A/S Digital service management  Denmark , ,
July 23, 2008 Pure Networks, Inc. Computer software  United States $120,000,000 $179,000,000
August 27, 2008 PostPath Email $215,000,000 $322,000,000
September 19, 2008 Jabber, Inc. Presence , ,
January 27, 2009 Richards-Zeta Building Intelligence Building management systems , ,
March 19, 2009 Pure Digital Technologies Digital video $590,000,000 $885,000,000
May 1, 2009 Tidal Software Job scheduling $105,000,000 $158,000,000
October 27, 2009 ScanSafe SaaS Web Security Provider  United Kingdom $183,000,000 $275,000,000
November 2, 2009 Set-top box business of DVN Cable  China , ,
December 18, 2009 Starent Networks System Architecture Evolution  United States $2,900,000,000 $4,352,000,000
April 18, 2010 Tandberg Videoconferencing  Norway $3,300,000,000 $4,872,000,000
May 18, 2010 MOTO Development Group Product design  United States , ,
May 20, 2010 CoreOptics Digital signal processing , ,
August 26, 2010 ExtendMedia Video , ,
September 2, 2010 Arch Rock Corporation Smart Grid , ,
December 1, 2010 LineSider Technologies Network Management Software , ,
January 26, 2011 Pari Networks Network Configuration and Change Management (NCCM) , ,
February 4, 2011 Inlet Technologies Adaptive Bit Rate (ABR) digital media processing platforms $95,000,000 $136,000,000
March 29, 2011 newScale Inc. [Cisco Intelligent Automation for Cloud] , ,
August 21, 2011 AXIOSS Software and Talent IT Service Management Software  Finland $31,000,000 $44,000,000
August 29, 2011 Versly Integrated Software  United States , ,
October 20, 2011 BNI Video Video $99,000,000 $142,000,000
March 15, 2012 NDS Group Conditional Access  United Kingdom $5,000,000,000 $7,012,000,000
March 19, 2012 Lightwire Silicon Photonics  United States $271,000,000 $380,000,000
July 16, 2012 Virtuata Software Security , ,
November 15, 2012 Cloupia Cloud Services $125,000,000 $175,000,000
November 19, 2012 Meraki Wired and Wireless Cloud Networking $1,200,000,000 $1,683,000,000
November 29, 2012 Cariden Network planning, design and traffic management solutions for telecommunications service providers $141,000,000 $198,000,000
January 23, 2013 Intucell Mobile Software  Israel $475,000,000 $657,000,000
January 29, 2013 Cognitive Security Cyber Threat Protection  Czech Republic , ,
March 25, 2013 SolveDirect Cloud services  Austria $21,194,000 $29,000,000
April 3, 2013 Ubiquisys Mobile software  United Kingdom $310,000,000 $428,000,000
May 29, 2013 JouleX Energy Management  United States $107,000,000 $148,000,000
July 30, 2013 Composite Software Data Virtualization $180,000,000 $249,000,000
July 23, 2013 Sourcefire Computer Security $2,700,000,000 $3,732,000,000
August 30, 2013 BroadHop Leading provider of next generation policy control and service management for carrier networks worldwide.
September 10, 2013 Whiptail Scalable solid state memory system provider $415,000,000 $574,000,000
December 10, 2013 Insieme Application-centric data center infrastructure , ,
December 17, 2013 Collaborate.com Mobile collaboration and cloud computing , ,
February 2014 Tetration Analytics Data Center Analytics and Security Solution , ,
June 16, 2014 ThreatGRID Unified malware analysis and threat intelligence , ,
June 27, 2014 Assemblage Cloud collaboration software  Denmark , ,
July 9, 2014 Tail-f Systems Network service orchestration solutions  Sweden , ,
July 27, 2014 Metacloud Deploys and operates private clouds for global organizations with a unique OpenStack-as-a-Service model  United States , ,
May 29, 2015 Tropo Provides development platform for real time communications , ,
December 10, 2014 Neohapsis Security Consulting , ,
April 13, 2015 Embrane Application-centric network services including firewalls (FW), virtual private networks (VPNs), load balancers (LB) and SSL offload engines , ,
June 12, 2015 Piston Cloud Computing Provides software that enables streamlined operational deployment of large scale distributed systems , ,
June 30, 2015 OpenDNS Cloud-delivered enterprise security service $635,000,000 $863,000,000
July 7, 2015 MaintenanceNet Provides a cloud-based software platform that uses data analytics and automation to manage and scale attach and renewals of recurring customer contracts. $139,000,000 $189,000,000
October 12, 2015 Pawaa Provides secure on-premise and cloud-based file sharing software.  India , ,
October 25, 2015 1 Mainstream Offers a cloud-based video platform designed to quickly launch live and on-demand OTT video services to a variety of connected devices  United States , ,
November 3, 2015 ParStream Realtime Edge Analytics Database for IoT  Germany , ,
November 20, 2015 Acano Acano provides collaboration infrastructure and conferencing software  United Kingdom $700,000,000 $951,000,000
December 22, 2015 Lancope Enhances Cisco's Security Everywhere strategy.  United States $452,500,000 $615,000,000
February 3, 2016 Jasper Technologies Developers of an Internet of Things cloud platform $1,400,000,000 $1,878,000,000
March 1, 2016 CliQr Technologies Application defined cloud orchestration platform $260,000,000 $349,000,000
March 2, 2016 Leaba Semiconductor Fabless Semiconductor  Israel $320,000,000 $429,000,000
June 28, 2016 CloudLock Cloud-Security Provider  United States $293,000,000 $393,000,000
October 17, 2016 Heroik Labs, Inc / Worklife Meeting productivity
January 24, 2017 AppDynamics Application Performance Management $3,700,000,000 $4,860,000,000
May 1, 2017 Viptela Inc. Software-defined WAN $610,000,000 $801,000,000
May 11, 2017 MindMeld Inc. Conversational Artificial Intelligence $125,000,000 $164,000,000
July 31, 2017 Observable Networks, Inc. Cloud-Security Provider , ,
September 22, 2017 Springpath Inc Hyper-converged Data Platform $320,000,000 $420,000,000
October 19, 2017 Perspica, Inc. Machine Learning , ,
October 25, 2017 BroadSoft Cloud Collaboration and Contact Center Platform $1,900,000,000 $2,496,000,000
December 21, 2017 Cmpute.io (47Line Technologies) software solution to analyze cloud-deployed workloads and consumption patterns for cost-optimization strategies India , ,
February 9, 2018 Skyport Systems Cloud managed secure edge compute server platform  United States , ,
May 1, 2018 Accompany Develops a relationship intelligence platform and has built one of the richest databases of decision makers in the world  United States , ,
June 19, 2018 July Systems Cloud-based mobile experience and location services , ,
November 21, 2018 Ensoft Ltd Software solutions for service provider networks United Kingdom , ,
August 2, 2018 Duo Security Cloud-based access security, identity management, and multi-factor authentication (MFA) services  United States $2,350,000,000 $3,013,000,000
December 18, 2018 Luxtera Privately held semiconductor company , ,
December 18, 2018 Singularity Networks Network Analytics Company , ,
June 6, 2019 Sentryo Cybersecurity for the Industrial Internet  France , ,
July 9, 2019 Acacia Communications Optical Interconnects  United States $2,600,000,000 $3,274,000,000
August 6, 2019 Voicea Meeting transcription, voice search, and meeting highlights/action items
April 6, 2020 Fluidmesh Networks Wireless mesh networks  Italy
May 28, 2020 ThousandEyes Cloud & Internet Intelligence for Enterprises and Service Providers  United States $1,000,000,000 $1,244,000,000
July 31, 2020 Modcam Video analytics  Sweden , ,
September 30, 2020 BabbleLabs Computer audio background noise reduction software  United States , ,
October 1, 2020 Portshift Computer application security solutions  Israel , ,
November 16, 2020 Banzai Cloud Secure cloud-native application deployment  Hungary , ,
February 19, 2021 IMImobile Cloud communications software  United Kingdom $730,000,000 $867,000,000
June 22, 2021 Sedona Systems Cross-Domain Network Controller  Israel , ,
June 30, 2021 Kenna Security Risk-based Vulnerability Management  United States , ,
July 8, 2021 Socio Labs Event technology platform , ,
September 28, 2022 Syrmia Networks Embedded System Software  Serbia , ,
February 24, 2023 Valtix Cloud network security  United States , ,
March 29, 2023 Lightspin Cloud security  Israel , ,
April 30, 2023 Smartlook User analytics  Czech Republic , ,
May 31, 2023 Armorblox AI-powered threat detection  United States , ,
June 21, 2023 Accedian High Performance Service Assurance  Canada , ,
August 31, 2023 Oort Identity security and management  United States , ,
September 21, 2023 Splunk Data analysis platform for real-time cybersecurity, full-stack observability, and machine learning telemetry $28,000,000,000 $29,587,000,000
December 21, 2023 Isovalent Cloud Networking and Security , ,
August 8, 2024 DeepFactor Cloud-native application security company , ,
August 26, 2024 Robust Intelligence AI Security , ,
October 3, 2024 Deeper Insights AI Ltd Deeper Insights helps organizations design, build, and implement AI solutions and services for enterprise use cases United Kingdom , ,
December 16, 2024 SnapAttack Threat detection and engineering platform  United States , ,
August 25, 2025 Aura Asset Intelligence Cyber Asset Attack Surface Management  Canada , ,
November 13, 2025 NeuralFabric AI training platform  United States , ,
November 14, 2025 EzDubs, Inc. Real time AI speech translation , ,
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