# List of acquisitions by Cisco

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.

## History

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.

## Acquisitions

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) | References |
| September 24, 1993 | Crescendo Communications | LAN switching | United States | $94,500,000 | |
| July 12, 1994 | Newport Systems Solutions | Router | United States | $95,000,000 | |
| October 24, 1994 | Kalpana | LAN switching | United States | $204,000,000 | |
| December 8, 1994 | LightStream | ATM switching | United States | $120,000,000 | |
| August 10, 1995 | Combinet | Remote office routers | United States | $114,200,000 | |
| September 6, 1995 | Internet Junction | Gateway | United States | $5,500,000 | |
| September 27, 1995 | Grand Junction Networks | 100Mbps Ethernet LAN Switching | United States | $348,000,000 | |
| October 27, 1995 | Network Translation | Firewalls | United States | $30,000,000 | |
| November 6, 1995 | Grand Junction Networks | LAN switching | United States | $345,000,000 | |
| January 23, 1996 | TGV Software | Internet software company | United States | $115,000,000 | Updated on ClearOS' web page: ClearOS Pedigree |
| April 22, 1996 | StrataCom | ATM switching | United States | $4,000,000,000 | |
| July 22, 1996 | Telebit | Modems | United States | $200,000,000 | |
| August 6, 1996 | Nashoba Networks | LAN switching | United States | $100,000,000 | |
| September 3, 1996 | Granite Systems | Computer networking | United States | $220,000,000 | |
| October 14, 1996 | Netsys Technologies | Network simulation | United States | $79,000,000 | |
| 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 | |
| June 24, 1997 | Global Internet Software Group | Firewall | United States | $40,250,000 | |
| June 24, 1997 | Ardent Communications | Broadband Internet access | United States | $156,000,000 | |
| September 2, 1997 | Integrated Network | Digital subscriber line | United States | — | |
| December 22, 1997 | LightSpeed International | Voice over Internet Protocol | United States | $160,000,000 | |
| February 18, 1998 | WheelGroup | Computer security | United States | $124,000,000 | |
| March 10, 1998 | NetSpeed | Broadband Internet access | United States | $236,000,000 | |
| March 11, 1998 | Precept Software | Internet television | United States | $84,000,000 | |
| May 4, 1998 | CLASS Data Systems | Computer networking | United States | $50,000,000 | |
| July 28, 1998 | Summa Four | LAN switching | United States | $116,000,000 | |
| August 21, 1998 | American Internet | Computer networking | United States | $56,000,000 | |
| September 15, 1998 | Clarity Wireless | Wireless networking | United States | $157,000,000 | |
| October 14, 1998 | Selsius Systems | Voice over Internet Protocol | United States | $145,000,000 | |
| December 2, 1998 | Pipelinks | Synchronous optical networking | United States | $126,000,000 | |
| April 8, 1999 | Fibex Systems | Digital loop carrier | United States | $250,000,000 | |
| April 8, 1999 | Sentient Networks | Voice over Internet Protocol | United States | $195,000,000 | |
| April 13, 1999 | GeoTel Communications | Voice over Internet Protocol | United States | $2,000,000,000 | |
| April 28, 1999 | Amteva Technologies | Voice over Internet Protocol | United States | $170,000,000 | |
| June 17, 1999 | TransMedia Communications | Gateways | United States | $407,000,000 | |
| June 29, 1999 | StratumOne Communications | Synchronous optical networking | United States | $435,000,000 | |
| August 16, 1999 | Calista | Private branch exchange | United States | $55,000,000 | |
| August 18, 1999 | MaxComm Technologies | Voice over Internet Protocol | United States | $143,000,000 | |
| August 26, 1999 | Monterey Networks | Synchronous optical networking | United States | $500,000,000 | |
| August 26, 1999 | Cerent | Synchronous optical networking | United States | $6,900,000,000 | |
| August 31, 1999 | IBM Networking Hardware Division | Computer networking | United States | $2,000,000,000 | |
| September 15, 1999 | COCOM A/S | Cable modems | Denmark | $65,600,000 | |
| September 22, 1999 | Webline Communications | Contact management | United States | $325,000,000 | |
| October 26, 1999 | Tasmania Network Systems | Web cache | United States | $25,000,000 | |
| November 9, 1999 | Aironet Wireless Communications | Wireless LAN | United States | $799,000,000 | |
| November 11, 1999 | V-Bits | Digital video | United States | $128,000,000 | |
| December 16, 1999 | Worldwide Data Systems | Information technology consulting | United States | $25,500,000 | |
| December 17, 1999 | Internet Engineering Group (IEng) | High performance routing software | United States | $25,000,000 | |
| December 20, 1999 | Pirelli Optical Systems | Fiber-optic communication | Italy | $2,150,000,000 | |
| January 19, 2000 | Compatible Systems | Virtual private networking | United States | $317,000,000 | |
| January 19, 2000 | Altiga Networks | Virtual private networking | United States | $250,000,000 | |
| February 16, 2000 | Growth Networks | Chipsets | United States | $355,000,000 | |
| March 1, 2000 | Atlantech Technologies | Network management | United Kingdom | $180,000,000 | |
| March 16, 2000 | JetCell | Mobile telephones | United States | $200,000,000 | |
| March 16, 2000 | infoGear Technology | Information management | United States | $301,000,000 | |
| March 29, 2000 | SightPath | Content delivery | United States | $800,000,000 | |
| April 11, 2000 | PentaCom | LAN switching | Israel | $118,000,000 | |
| April 12, 2000 | Seagull Semiconductor | Computer networking | Israel | $19,000,000 | |
| May 5, 2000 | Arrowpoint Communications | LAN switching | United States | $5,700,000,000 | |
| May 12, 2000 | Qeyton Systems | Wavelength-division multiplexing | Sweden | $800,000,000 | |
| June 5, 2000 | HyNEX | Internet access | Israel | $127,000,000 | |
| July 7, 2000 | Netiverse | LAN switching | United States | $210,000,000 | |
| 2001 | AuroraNetics | Computer networking | United States | $150,000,000 | |
| July 25, 2000 | Komodo Technology | Voice over Internet Protocol | United States | $175,000,000 | |
| July 27, 2000 | NuSpeed Internet Systems | iSCSI | United States | $450,000,000 | |
| August 1, 2000 | IPmobile | Mobile software | United States | $425,000,000 | |
| August 31, 2000 | PixStream | Media player (application software) | United States | $369,000,000 | |
| September 28, 2000 | IPCell Technologies | Voice over Internet Protocol | United States | $200,000,000 | |
| September 28, 2000 | Vovida Networks | Voice over Internet Protocol | United States | $169,000,000 | |
| October 20, 2000 | CAIS Software | Integrated development environment | United States | $170,000,000 | |
| November 10, 2000 | Active Voice | Communication software | United States | $266,000,000 | |
| November 13, 2000 | Radiata | Wireless networking | Australia | $295,000,000 | |
| December 14, 2000 | ExiO Communications | Wireless networking | United States | $155,000,000 | |
| July 27, 2001 | Allegro Systems | Virtual private networks | United States | $181,000,000 | |
| May 1, 2002 | Hammerhead Networks | Computer networking | United States | $173,000,000 | |
| May 1, 2002 | Navarro Networks | Computer networking | United States | $85,000,000 | |
| July 25, 2002 | AYR Networks | Computer networking | United States | $113,000,000 | |
| August 20, 2002 | Andiamo Systems | Data storage | United States | $2,500,000,000 | |
| October 22, 2002 | Psionic Software | Intrusion detection | United States | $12,000,000 | |
| January 24, 2003 | Okena | Intrusion detection | United States | $154,000,000 | |
| March 19, 2003 | SignalWorks | Echo cancellation | United States | $13,500,000 | |
| March 20, 2003 | Linksys | Computer networking | United States | $500,000,000 | |
| November 12, 2003 | Latitude Communications | Web conferencing | United States | $80,000,000 | |
| March 12, 2004 | Twingo Systems | Computer security | United States | $5,000,000 | |
| March 22, 2004 | Riverhead Networks | Computer security | United States | $39,000,000 | |
| June 17, 2004 | Procket Networks | Routers | United States | $89,000,000 | |
| June 29, 2004 | Actona Technologies | Data storage | United States | $82,000,000 | |
| July 8, 2004 | Parc Technologies | Routers | United Kingdom | $9,000,000 | |
| August 23, 2004 | P-Cube | Service Delivery Platform | Israel | $200,000,000 | |
| September 9, 2004 | NetSolve | Information technology | United States | $128,500,000 | |
| September 13, 2004 | dynamicsoft | Communication software | United States | $55,000,000 | |
| October 21, 2004 | Perfigo | Computer networking | United States | $74,000,000 | |
| November 17, 2004 | Jahi Networks | Network management | United States | $16,000,000 | |
| December 9, 2004 | BCN Systems | Routers | United States | $34,000,000 | |
| December 20, 2004 | Protego Networks | Network security | United States | $65,000,000 | |
| January 12, 2005 | Airespace | Wireless LAN | United States | $450,000,000 | |
| April 14, 2005 | Topspin Communications | LAN switching | United States | $250,000,000 | |
| April 26, 2005 | Sipura Technology | Voice over Internet Protocol | United States | $68,000,000 | |
| May 23, 2005 | Vihana | Semiconductors | United States | $30,000,000 | |
| May 26, 2005 | FineGround Networks | Network security | United States | $70,000,000 | |
| June 14, 2005 | M.I. Secure Corporation | Virtual private networks | United States | $13,000,000 | |
| June 27, 2005 | Netsift | Computer networking | United States | $30,000,000 | |
| July 22, 2005 | KISS Technology | Entertainment technology | Denmark | $61,000,000 | |
| July 26, 2005 | Sheer Networks | Service management | United States | $97,000,000 | |
| September 30, 2005 | Nemo Systems | Computer networking | United States | $12,500,000 | |
| November 18, 2005 | Scientific Atlanta | Digital cable | United States | $6,900,000,000 | |
| November 29, 2005 | Cybertrust | Information gathering | United States | $14,000,000 | |
| March 7, 2006 | SyPixx Networks | Surveillance | United States | $51,000,000 | |
| June 8, 2006 | Metreos | Voice over Internet Protocol | United States | $28,000,000 | |
| June 8, 2006 | Audium | Voice over Internet Protocol | United States | $19,800,000 | |
| July 6, 2006 | Meetinghouse | Computer security | United States | $43,700,000 | |
| August 21, 2006 | Arroyo Video Solutions | Video on demand | United States | $92,000,000 | |
| October 10, 2006 | Ashley Laurent | Gateways | United States | — | |
| October 25, 2006 | Orative | Mobile software | United States | $31,000,000 | |
| November 13, 2006 | Greenfield Networks | Semiconductors | United States | — | |
| December 15, 2006 | Tivella | Digital signage / IPTV | United States | — | |
| January 4, 2007 | IronPort | Computer security | United States | $830,000,000 | |
| February 9, 2007 | Five Across | Social networking service | United States | — | |
| February 21, 2007 | Reactivity | Web services | United States | $135,000,000 | |
| March 5, 2007 | Utah Street Networks | Social networking service | United States | — | |
| March 13, 2007 | NeoPath | Data storage | United States | — | |
| March 15, 2007 | WebEx | Web conferencing | United States | $3,200,000,000 | |
| March 28, 2007 | SpansLogic | Computer networking | United States | — | |
| May 21, 2007 | BroadWare Technologies | Surveillance | United States | — | |
| September 18, 2007 | Cognio | Mobile software | United States | — | |
| September 27, 2007 | Latigent | Business performance management | United States | — | |
| October 23, 2007 | Navini Networks | WiMAX | United States | $330,000,000 | |
| November 1, 2007 | Securent | Digital rights management | United States | $100,000,000 | |
| April 8, 2008 | Nuova Systems, Inc. | Computer networking | United States | $678,000,000 | |
| June 10, 2008 | DiviTech A/S | Digital service management | Denmark | — | |
| July 23, 2008 | Pure Networks, Inc. | Computer software | United States | $120,000,000 | |
| August 27, 2008 | PostPath | Email | United States | $215,000,000 | |
| September 19, 2008 | Jabber, Inc. | Presence | United States | — | |
| January 27, 2009 | Richards-Zeta Building Intelligence | Building management systems | United States | — | |
| March 19, 2009 | Pure Digital Technologies | Digital video | United States | $590,000,000 | |
| May 1, 2009 | Tidal Software | Job scheduling | United States | $105,000,000 | |
| October 27, 2009 | ScanSafe | SaaS Web Security Provider | United Kingdom | $183,000,000 | |
| 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 | |
| April 18, 2010 | Tandberg | Videoconferencing | Norway | $3,300,000,000 | |
| May 18, 2010 | MOTO Development Group | Product design | United States | — | |
| May 20, 2010 | CoreOptics | Digital signal processing | United States | — | |
| August 26, 2010 | ExtendMedia | Video | United States | — | |
| September 2, 2010 | Arch Rock Corporation | Smart Grid | United States | — | |
| December 1, 2010 | LineSider Technologies | Network Management Software | United States | — | |
| January 26, 2011 | Pari Networks | Network Configuration and Change Management (NCCM) | United States | — | |
| February 4, 2011 | Inlet Technologies | Adaptive Bit Rate (ABR) digital media processing platforms | United States | $95,000,000 | |
| March 29, 2011 | newScale Inc. | | United States | — | |
| August 21, 2011 | AXIOSS Software and Talent | IT Service Management Software | Finland | $31,000,000 | |
| August 29, 2011 | Versly | Integrated Software | United States | — | |
| October 20, 2011 | BNI Video | Video | United States | $99,000,000 | |
| March 15, 2012 | NDS Group | Conditional Access | United Kingdom | $5,000,000,000 | |
| March 19, 2012 | Lightwire | Silicon Photonics | United States | $271,000,000 | |
| July 16, 2012 | Virtuata | Software Security | United States | — | |
| November 15, 2012 | Cloupia | Cloud Services | United States | $125,000,000 | |
| November 19, 2012 | Meraki | Wired and Wireless Cloud Networking | United States | $1,200,000,000 | |
| November 29, 2012 | Cariden | Network planning, design and traffic management solutions for telecommunications service providers | United States | $141,000,000 | |
| January 23, 2013 | Intucell | Mobile Software | Israel | $475,000,000 | |
| January 29, 2013 | Cognitive Security | Cyber Threat Protection | Czech Republic | — | |
| March 25, 2013 | SolveDirect | Cloud services | Austria | $21,194,000 | |
| April 3, 2013 | Ubiquisys | Mobile software | United Kingdom | $310,000,000 | |
| May 29, 2013 | JouleX | Energy Management | United States | $107,000,000 | |
| July 30, 2013 | Composite Software | Data Virtualization | United States | $180,000,000 | |
| July 23, 2013 | Sourcefire | Computer Security | United States | $2,700,000,000 | |
| August 30, 2013 | BroadHop | Leading provider of next generation policy control and service management for carrier networks worldwide. | United States | | |
| September 10, 2013 | Whiptail | Scalable solid state memory system provider | United States | $415,000,000 | |
| December 10, 2013 | Insieme | Application-centric data center infrastructure | United States | — | |
| December 17, 2013 | Collaborate.com | Mobile collaboration and cloud computing | United States | — | |
| February 2014 | Tetration Analytics | Data Center Analytics and Security Solution | United States | — | |
| June 16, 2014 | ThreatGRID | Unified malware analysis and threat intelligence | United States | — | |
| 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 | United States | — | |
| December 10, 2014 | Neohapsis | Security Consulting | United States | — | |
| April 13, 2015 | Embrane | Application-centric network services including firewalls (FW), virtual private networks (VPNs), load balancers (LB) and SSL offload engines | United States | — | |
| June 12, 2015 | Piston Cloud Computing | Provides software that enables streamlined operational deployment of large scale distributed systems | United States | — | |
| June 30, 2015 | OpenDNS | Cloud-delivered enterprise security service | United States | $635,000,000 | |
| 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. | United States | $139,000,000 | |
| 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 | |
| December 22, 2015 | Lancope | Enhances Cisco's Security Everywhere strategy. | United States | $452,500,000 | |
| February 3, 2016 | Jasper Technologies | Developers of an Internet of Things cloud platform | United States | $1,400,000,000 | |
| March 1, 2016 | CliQr Technologies | Application defined cloud orchestration platform | United States | $260,000,000 | |
| March 2, 2016 | Leaba Semiconductor | Fabless Semiconductor | Israel | $320,000,000 | |
| June 28, 2016 | CloudLock | Cloud-Security Provider | United States | $293,000,000 | |
| October 17, 2016 | Heroik Labs, Inc / Worklife | Meeting productivity | United States | | |
| January 24, 2017 | AppDynamics | Application Performance Management | United States | $3,700,000,000 | |
| May 1, 2017 | Viptela Inc. | Software-defined WAN | United States | $610,000,000 | |
| May 11, 2017 | MindMeld Inc. | Conversational Artificial Intelligence | United States | $125,000,000 | |
| July 31, 2017 | Observable Networks, Inc. | Cloud-Security Provider | United States | — | |
| September 22, 2017 | Springpath Inc | Hyper-converged Data Platform | United States | $320,000,000 | |
| October 19, 2017 | Perspica, Inc. | Machine Learning | United States | — | |
| October 25, 2017 | BroadSoft | Cloud Collaboration and Contact Center Platform | United States | $1,900,000,000 | |
| 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 | United States | — | |
| November 21, 2018 | Ensoft Ltd | Software solutions for service provider networks | United Kingdom | — | |
| August 2, 2018 | Duo Security | Cloud-based Cyber-Security | United States | $2,350,000,000 | |
| December 18, 2018 | Luxtera | Privately-held semiconductor company | United States | — | |
| December 18, 2018 | Singularity Networks | Network Analytics Company | United States | — | |
| June 6, 2019 | Sentryo | Cybersecurity for the Industrial Internet | France | — | |
| July 9, 2019 | Acacia Communications | Optical Interconnects | United States | $2,600,000,000 | |
| August 6, 2019 | Voicea | Meeting transcription, voice search, and meeting highlights/action items | United States | | |
| 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 | |
| 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 | |
| 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 | United States | — | |
| 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 | Cybersecurity and Observability | United States | $28,000,000,000 | |
| December 21, 2023 | Isovalent | Cloud Networking and Security | United States | — | |
| August 8, 2024 | DeepFactor | Cloud-native application security company | United States | — | |
| August 26, 2024 | Robust Intelligence | AI Security | United States | — | |
| 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 | — | |