29 Best Developer Apis Startups to Watch in 2025

The Definitive Seedtable Ranking of Developer Apis 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 29 start-ups with an aggregate funding of $1.3b. The average funding per company in this subset is $44.0m.

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

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42Crunch logo

42Crunch

42Crunch is an enterprise API security platform with integrated services, including an API firewall, to discover and remediate API security vulnerabilities.

5

Funding Rounds

$37.7m

Money raised

Belvo logo

Belvo

Developer of an open banking API platform intended to access and interpret data from end-users in an easy and scalable way.

5

Funding Rounds

$66.0m

Money raised

Nexmo logo

Nexmo

Nexmo was a technology company that developed SMS and voice APIs for businesses.

5

Funding Rounds

$24.5m

Money raised

Metomic logo

Metomic

Privacy Automation Platform made to help businesses deliver transparent, trustworthy online experiences on autopilot

2

Funding Rounds

$21.8m

Money raised

Mux (company) logo

Mux (company)

A company providing an API allowing its users to encode, host and stream videos.

8

Funding Rounds

$293.8m

Money raised

Teller logo

Teller

Teller is an algorithmic credit risk protocol, built to enable the creation of decentralized lending markets that can offer unsecured loans, without the need for collateral.

2

Funding Rounds

$7.9m

Money raised

Checkr logo

Checkr

Checkr is a company developing an API to automate professional background checking.

4

Funding Rounds

$520.0m

Money raised

Zabo (company) logo

Zabo (company)

Zabo is a cryptocurrency data aggregation company.

2

Funding Rounds

$3.7m

Money raised

Mentum logo

Mentum

Mentum is a San Francisco-based financial services company developing an API to integrate investments in Latin America, including a system of broker-dealers, registered investment advisors, and exchanges.

1

Funding Rounds

$4.2m

Money raised

Vidyo logo

Vidyo

Vidyo is a company producing visual communication solutions founded in 2005 by Isaac D. Levy, Alex Eleftheriadis and Ofer Shapiro.

7

Funding Rounds

$187.5m

Money raised

Vlingo logo

Vlingo

Vlingo is a virtual assistant that uses voice-to-text technology and NLP to understand the user’s intent and take appropriate action.

3

Funding Rounds

$26.5m

Money raised

Structo logo

Structo

Structo is a company founded in 2014 by Huub van Esbroeck.

8

Funding Rounds

$3.0m

Money raised

ChekkitApp logo

ChekkitApp

Developer of assets and inventory tracking technology designed to offer consumer intelligence and anti-counterfeiting services. The company's technology offers real-time product authentication, consumer engagement, and supply chain tracking services to producers of quality human-friendly products.

7

Funding Rounds

$550.0k

Money raised

Brick logo

Brick

Brick is a financial data application programming interface (API) that allows developers to offer in-app financial services.

1

Funding Rounds

$8.5m

Money raised

Atmail logo

Atmail

Developer of a commercial web-mail platform designed to offer messaging services to enterprises.

1

Funding Rounds

$2.0m

Money raised

Inspide logo

Inspide

Developer of a geo-intelligence platform intended to respond to geolocated data needs of businesses. The company's spatial intelligence platform allows users to learn about customers and the places they move through, enabling clients to perform hyper-segmentation and detailed predictions to derive actionable insights.

2

Funding Rounds

$2.2m

Money raised

ListenField logo

ListenField

ListenField develops and provides an integrated predictive agronomic platform for the farming industry.

3

Funding Rounds

BoxyHQ logo

BoxyHQ

BoxyHQ provides security building blocks for developers. BoxyHQ’s suite of APIs for security and privacy helps engineering teams build and ship compliant cloud applications faster.

1

Funding Rounds

$2.5m

Money raised

Routee logo

Routee

Routee is a communication privacy and security company for the contract.

1

Funding Rounds

$1.5m

Money raised

Apptegy logo

Apptegy

Apptegy is a Little Rock, Arkansas-based company founded in 2013 by Jeston George.

2

Funding Rounds

$11.4m

Money raised

Paccurate logo

Paccurate

Paccurate is a company founded in 2009 by James Malley.

2

Funding Rounds

$10.3m

Money raised

Droplit logo

Droplit

Droplit is a platform that provides an API for developing applications.

2

Funding Rounds

$1.6m

Money raised

Payrails logo

Payrails

Payrails is a payment operating system founded in 2021.

3

Funding Rounds

$19.2m

Money raised

enviame.cl logo

enviame.cl

enviame.cl is a company founded in 2016 by Javier Smith, Nicolás Justiniano and Victor Hugo Avila Moncada.

1

Funding Rounds

First Digital Trust logo

First Digital Trust

First Digital Trust is an Hong Kong-based company founded in 2019.

2

Funding Rounds

$5.2m

Money raised

Identitypass logo

Identitypass

Identitypass is a company founded in 2021 by Niyi Adegboye, Lanre Ogungbe and Ebuka Obi.

1

Funding Rounds

$2.8m

Money raised

ToolJet Solutions, Inc. logo

ToolJet Solutions, Inc.

ToolJet Solutions, Inc. is a company founded in 2021.

1

Funding Rounds

$1.6m

Money raised

Cybrid logo

Cybrid

Cybrid is a Toronto-based company.

1

Funding Rounds

$3.8m

Money raised

Stigg logo

Stigg

Stigg is a Tel Aviv-based company.

1

Funding Rounds

$6.4m

Money raised