15 Best Telephony Startups to Watch in 2025

The Definitive Seedtable Ranking of Telephony Startups

We track 71,000+ companies and rank them dynamically using our Seedtable Score – a score that uses quantitative and qualitative data points to signal the momentum behind a company. We then monitor the list manually leveraging our expertise as founders and investors.

There are 15 start-ups with an aggregate funding of $950.4m. The average funding per company in this subset is $63.4m.

Last update to the database: Feb 18, 2025. See changelog.

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5

Funding Rounds

$212.8m

Money raised

Pindrop is a cybersecurity company developing voice security and authentication solutions.

Location:

Key people:

18

Funding Rounds

$383.4m

Money raised

Cloud based phone system and call center software with integrations into CRMs & helpdesk software.

Location:

Key people:

4

Funding Rounds

$33.0m

Money raised

Jajah is a Mountain View, California-based company founded in 2005.

7

Funding Rounds

$41.2m

Money raised

ringDNA is a company that transforms sales team into a high-performing revenue engine.

4

Funding Rounds

$202.3m

Money raised

CallRail is an Atlanta-based company founded in 2011 by Andy Powell.

2

Funding Rounds

$6.5m

Money raised

Knowlarity is a Singapore-based company founded in 2009 by Pallav Pandey.

1

Funding Rounds

fontacto is a Mexico-based company founded in 2012 by Ricardo Cacique, Jose Antonio del Rio, Joaquin Martínez and Daniel Martinez.

1

Funding Rounds

$40.0m

Money raised

Developer of a co-investing platform designed to help in long-term financing. The company's platform offers long-term investments in individual residential properties through their innovative programs in exchange for the opportunity to share gain or loss in the home's value when they decide to sell, enabling applicants to buy homes without interest or monthly payments.

Industries:

Location:

1

Funding Rounds

$200.0k

Money raised

Ring.io is a company founded in 2009 by Sam Aparicio.

Key people:

1

Funding Rounds

$1.8m

Money raised

Fonix is a London-based company founded in 2006 by Will Neale, Marcus Kern and Rob Weisz.

Location:

Key people:

2

Funding Rounds

$7.4m

Money raised

Company enabling users to find, compare, and purchase business IT infrastructure (internet, voice, managed wi-fi, etc.) completely online.

Industries:

1

Funding Rounds

Invoxia is an Issy-les-Moulineaux-based company founded in 2010 by Éric Carreel.

Industries:

Key people:

2

Funding Rounds

$18.8m

Money raised

Ringover Group is a Paris-based company founded in 2005 by Renaud CHARVET.

Location:

Key people:

1

Funding Rounds

$20.0k

Money raised

ShoutNow is a company founded in 2019 by Joel Smith.

Key people:

1

Funding Rounds

$3.0m

Money raised

Infratel is a Lusaka-based company founded in 2003.

Location:

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