15 Best Startups in Portsmouth New Hampshire to Watch in 2025

The Definitive Seedtable Ranking of Startups in Portsmouth New Hampshire

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 $144.8m. The average funding per company in this subset is $9.7m.

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

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1

Funding Rounds

$5.0m

Money raised

A company developing and commercializing programmable network adapters for network traffic analysis and application off-loading

2

Funding Rounds

$18.0m

Money raised

Deep Information Sciences Inc. offers database technology solutions.

3

Funding Rounds

$3.7m

Money raised

C3 Metrics is a company that makes marketing perform better.

2

Funding Rounds

$11.8m

Money raised

Piroutte Medical is a Boston-based company developing drug-delivery medical devices.

2

Funding Rounds

$1.0m

Money raised

Therma-HEXX is a Portsmouth, New Hampshire-based company founded in 2011 by Robert Barmore.

2

Funding Rounds

$10.1m

Money raised

Sell My Timeshare NOW is an Orlando, Florida-based company founded in 2003.

1

Funding Rounds

$1.6m

Money raised

River is an in-person events and social platform that enables big communities to organize worldwide events with crowdsourced hosts.

9

Funding Rounds

$15.5m

Money raised

MMS Analytics, Inc. is a Portsmouth, New Hampshire-based company.

8

Funding Rounds

$13.9m

Money raised

Bit Fry Game Studios, Inc. is a Portsmouth, New Hampshire-based gaming company founded in 2013.

Industries:

1

Funding Rounds

$600.0k

Money raised

Remotely is a Portsmouth, New Hampshire-based creative industries company founded in 2021 by David Parrelli.

1

Funding Rounds

$5.0m

Money raised

Treasuryxpress is a company founded in 2015.

2

Funding Rounds

$12.4m

Money raised

POSITION IMAGING, INC is a Portsmouth, New Hampshire-based company.

1

Funding Rounds

$15.0m

Money raised

Pirouette Medical Inc. is a Portsmouth, New Hampshire-based company founded in 2017.

1

Funding Rounds

$1.2m

Money raised

In Defense Of Growth Inc is a Portsmouth, New Hampshire-based company founded in 2018.

1

Funding Rounds

$30.0m

Money raised

PlaneSense, Inc. is a Portsmouth, New Hampshire-based aviation company founded in 1995.

Industries:

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