Fuze (formerly known as ThinkingPhones) is a global cloud-based unified communications platform that empowers productivity and delivers insights across the enterprise by enabling simplified business voice communications, flexible video conferencing, and always-on collaboration.

Fuze allows the modern, mobile workforce to seamlessly communicate anytime, anywhere, across any device.

Fuze was founded in 2006 by Steven Kokinos & Derek Yooand. The company is headquartered in Boston, Massachusetts with offices additional locations including New York, San Francisco, Seattle, Ottawa, London, Amsterdam, Aveiro (Portugal), Paris, Munich, Zurich, Copenhagen, and Sydney.

Fuze's main product combines business voice, videoconferencing, text, instant messaging and collaboration apps under a single cloud service delivered both to traditional phone systems and mobile devices. It runs on a natively-developed platform, and is focused primarily on enterprise and mid-market customers.

Fuze has over 1,500 clients, including Associated Press, Starbucks, Macys.com, Acquia and Marketo. Past clients include Arm & Hammer, John Hancock Financial, Sony and Century 21. Fuze competes with Google, Microsoft and Cisco in offering a combination of phone, videoconferencing, text and related services.


Fuze is backed by top-tier investors including Bessemer Venture Partners, Summit Partners, Capstone Partners, Advanced Technology Ventures, & Technology Crossover Ventures among others. The company has also acquired Whaleback Managed Services, Contactive & LiveMinutes to date.


Fuze Named as a Visionary in the Gartner Magic Quadrant for Unified Communications as a Service, Worldwide.



  • Year founded: 2006
  • Funding Info: $480.4M in 8 funding rounds (Last funding type: Series F)- Fuze has also acquired Whaleback Managed Services, Contactive & LiveMinutes to date!
  • Yearly Revenue: $100M-$200M (2018)
  • Employee Size: 501-1,000
  • Business Valuation: Valued at $1.4B+ as of June 2018
  • City/Town: Boston
  • State: Massachusetts
  • Country: United States
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