Top 14 Business Phone System startups

Updated: Mar 22, 2026
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These startups want to disrupt Business Phone Systems with cloud-based PBX integration, AI-powered call analytics and seamless CRM connectivity.
1
RingCentral
Country: USA | Funding: $1.7B
RingCentral, a global distributor of cloud-unified communications and collaboration solutions, offers its users with technology services.
2
Vonage
Country: USA | Funding: $597M
Vonage is a B2B communications SaaS leader for a new era.
3
8x8
Country: USA | Funding: $453.1M
8x8 offers secure and reliable cloud-based, enterprise-class business phone systems, unified communications, and contact center solutions.
4
Dialpad
Country: USA | Funding: $450M
Dialpad offers a cloud-based business phone solution simplified for every business.
5
Aircall
Country: France | Funding: $237.6M
Aircall is an advanced call center software, complete business phone and contact center 100% natively integrated in any CRM.
6
Nextiva
Country: USA | Funding: $200M
Nextiva is a leading business communications company that helps organizations simplify and enhance their customer relationships.
7
OpenPhone
Country: USA | Funding: $170.9M
OpenPhone offers a phone app that lets users seamlessly get a business phone number without a second phone or a second SIM card.
8
Ooma
Country: USA | Funding: $98.4M
Ooma creates powerful connected experiences in small business telecommunications service, as well as affordable home security.
9
Exotel
Country: India | Funding: $87.3M
Exotel is a SaaS company with full stack customer engagement, including contact center software, communications API, and conversational AI.
10
Grasshopper
Country: USA
Grasshopper enables entrepreneurs to build a virtual office that connects callers to employees, wherever they are. Acquired by Citrix Systems
11
3CX
Country: Cyprus
3CX is the developer of 3CX Phone System, an open standards, software-based PBX for Windows.
12
Binotel
Country: Ukraine
Smart telephony Binotel on the basis of a virtual PBX is a ready-made solution for sales departments, call centers and companies in general.
13
OnSIP
Country: USA
OnSIP is a leading provider of real-time communications services to businesses.
14
ClarityTel
Country: USA
Clarity Telemanagement is providing advanced phone systems in the cloud, customized for your business.
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Fernando Lopez
Editor: Fernando Lopez
Fernando Lopez is a senior editor for SaaStartups. He joined the company after having previously spent over three years at ReadWriteWeb. Prior to his work as a reporter, Fernando worked in I.T. across a number of industries, including banking, retail and software. Fernando graduated from the University of Buenos Aires (Computer Science). He is more-than-averagely interested in photography and can often be found with a camera slung over his shoulder. He wrote a book about pitching startups to investors. You can contact Fernando at fernandolopez(at)saastartups(dot)com