27 Best Application programming interface (API) Startups to Watch in 2024
The Definitive Seedtable Ranking of Application programming interface (API) Startups
We track 18,000+ 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.
The Seedtable database reveals 27 startups in the Application programming interface (API) industry, who have collectively secured $2.5B in funding with the average funding per startup standing at $93.0M. Seedtable has compiled profiles on 21 founders and executives for these startups.
Last update to the database: Sep 17, 2024. See changelog.
Displaying 27 out of 27 Companies
| Company | Score | Funding | Investors | Employees | Industries | Business Model | Location | Likely To Outsource | Contact | |
|---|---|---|---|---|---|---|---|---|---|---|
Algolia Algolia is a company designing and building search and discovery API for websites and mobile apps. It participated in the W14 cohort of Y Combinator. | 70 | $441M Seed | 11 | 501 - 1000 | Application programming interface (API) | Paris, France | Cybersecurity, Branding, Management Consulting, Sales, Hi... | s***********y@algolia.com | ||
Contentful Contentful's platform helps teams deliver digital experiences faster with an API-first approach. | 52 | $348M Series C | 7 | 501 - 1000 | Application programming interface (API) | Berlin, Germany | Marketing, Software Engineering, Marketing, Branding, Man... | p***o@contentful.com | ||
Sinch Sinch offers programmable SMS, voice, video, and verification tools. | 48 | $393M Series A | 3 | 1001 - 5000 | Application programming interface (API) | Sweden, US | Design, Software Engineering, Sales, Marketing, Cybersecu... | j***********n@sinch.com | ||
Sequence Sequence is a company developing a billing and payments stack for B2B companies. | 44 | $16.8M Unknown | 4 | 11 - 50 | Application programming interface (API) | London, UK | Marketing, Software Engineering, Marketing, Branding, Man... | r**a@sequencehq.com | ||
Thryve B2B health data integration and analytics API provider. | 43 | $5.7M Seed | 3 | 11 - 50 | Application programming interface (API) | Berlin, Germany | Hiring, Design, Software Engineering, App Development, Ma... | |||
Pusher Pusher is a company founded in 2011. | 25 | 51 - 200 | Application programming interface (API) | London, UK | ||||||
Evervault Use Evervault to collect and encrypt sensitive data. | 21 | 11 - 50 | Application programming interface (API) | Dublin, Ireland | s**********n@evervault.com | |||||
Polygon.io Polygon.io is a company founded in 2016 by Quinton Pike. | 15 | 11 - 50 | Application programming interface (API) | Atlanta, United States | ||||||
Twilio Twilio is a cloud communications platform for building SMS, voice, and messaging applications on an API built for a global scale. | 15 | 5001 - 10000 | Application programming interface (API) | San Francisco, United States | ||||||
Traefik Labs Traefik Labs (formerly Containous) is a cloud-native networking company that offers a stack for dynamic infrastructure to simplify cloud and microservice adoption for all enterprises. | 15 | 11 - 50 | Application programming interface (API) | , | ||||||
Workato A startup that offers an integration and automation platform for businesses. | 15 | 501 - 1000 | Application programming interface (API) | , | ||||||
IBM IBM is an American multinational technology and consulting corporation. | 15 | Application programming interface (API) | , | |||||||
Validic Developer of a healthcare platform designed to simplify personal health data. The company's platform captures data from clinical and remote-monitoring devices, sensors, fitness equipment, and patient-wellness applications, enabling users to access, manage and utilize device-generated data.
| 15 | 51 - 200 | Application programming interface (API) | , | ||||||
Spire Health Spire is a company developing tags that provide health tracking including respiration, sleep, stress, activity, and pulse rate. | 15 | 51 - 200 | Application programming interface (API) | San Francisco, United States | ||||||
SimpleGeo SimpleGeo is a San Francisco-based company founded in 2009 by Matt Galligan. | 15 | 1 - 10 | Application programming interface (API) | San Francisco, United States | ||||||
EVEN Financial EVEN Financial offers a B2B2C API to help connect financial institutions to consumers, and connect consumers to personalized financial products. | 15 | 51 - 200 | Application programming interface (API) | , | ||||||
Microsoft Microsoft is an American multinational technology company that develops, manufactures, licenses, supports, and sells computer software, consumer electronics, personal computers, and related services. | 15 | Application programming interface (API) | , | |||||||
API3 API3 is a DAO-driven project to build dAPIs - fully decentralized, native blockchain APIs - that will be configured, managed, insured and monetized at scale with API3 DAO. | 15 | 1 - 10 | Application programming interface (API) | , | ||||||
Keen Keen is a company founded in 2011 by Kyle Wild, Ryan Spraetz and Dan Kador. | 0 | 51 - 200 | Application programming interface (API) | , | ||||||
Plaid Plaid is a company providing businesses with tools and access to develop a digital financial system. Plaid was acquired by Visa in January 2020. | 0 | 1 - 10 | Application programming interface (API) | San Francisco, United States | ||||||
Crunchbase Crunchbase is company that offers an online platform for discovering information related to private and public businesses. | 0 | $104M Series D | Application programming interface (API) | , | Hiring, Marketing, Software Engineering, Cybersecurity, B... | |||||
Golden Golden is a San Francisco-based company building a knowledge graph. The founder and CEO of Golden is Jude Gomila. | 0 | Application programming interface (API) | , | |||||||
Salt Security Salt Security is a Palo Alto, California-based protection platform for APIs and associated API integrations. | 0 | 51 - 200 | Application programming interface (API) | , | ||||||
Oracle Oracle is a software company specializing in the development of cloud and platform solutions. | 1 | Application programming interface (API) | , | |||||||
Attentive Attentive is a business intelligence company founded by Luís Miguel Braga, Pedro Araújo and Daniel Araújo. | 0 | Application programming interface (API) | , | |||||||
Zapier Zapier is an American for-profit corporation and a web-based service that allows end users to integrate the web applications they use. | 0 | 501 - 1000 | Application programming interface (API) | San Francisco, United States | ||||||
ZoomInfo ZoomInfo provides accurate and actionable B2B contact and company information to accelerate the growth of sales and marketing teams. | 0 | Application programming interface (API) | , |
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