44 Trending API Businesses [2024]

Updated: January 18th, 2023
Build An Api

API is the acronym for “application programming interface” and is a software intermediary connecting applications.

More and more companies are adopting a digital business strategy to streamline their operations and provide better customer service.

Many benefits come with using an API, and we’ve compiled a list of the best API businesses today.

Looking for some examples of a API?

Interested in case studies of a successful API? Check out our full list of success stories.

1. Accu Weather

AccuWeather has local and international weather forecasts from the most accurate weather forecasting technology featuring up-to-the-minute weather reports.

  • Website traffic: 630M/month
  • Business rank: #625

Check out their full website ➜

2. Telegram

Telegram is a freeware, cross-platform, cloud-based instant messaging service. The service also provides end-to-end encrypted video calling, VoIP, file sharing, and several other features.

  • Website traffic: 140M/month
  • Business rank: #150

Check out their full website ➜

Learn more about starting an API:

Where to start?

-> Api plan
-> How to finance an API?
-> How much does it cost to start an API?
-> Pros and cons of an API

Need inspiration?

-> Other API success stories
-> Marketing ideas for an API
-> Api slogans
-> Api names

Other resources

-> Profitability of an API
-> Api tips

4. Thomson Reuters

The intelligence, technology and human expertise you need to find trusted answers. Thomson Reuters is The Answer Company.

Where they're located: In Salah, In Salah, Algeria
Website traffic: 10.9M/month


5. Segment

Segment is a customer data platform (CDP) that helps you collect, clean, and control your customer data.

Where they're located: San Francisco, California, USA
Website traffic: 840K/month


6. Clover

Clover, a Fiserv company, builds the largest open-architecture point of sale solution aimed at small & medium-sized business owners.

  • Website traffic: 6.13M/month
  • Business rank: #7.13K

Check out their full website ➜

7. Postman

Postman makes API development easy. Our platform offers the tools to simplify each step of the API building process and streamlines collaboration so you can create better APIs faster.

Where they're located: San Francisco, California, USA
Website traffic: 2.23M/month


8. EasyPost

EasyPost’s best-in-class Shipping APIs provide end-to-end flexibility and more control over parcel shipping and logistics processes for anyone shipping online.

Where they're located: Ninove, Flanders, Belgium
Website traffic: 3.98M/month


9. First Data

First Data is the #1 merchant services acquirer providing payment processing solutions for small/large businesses and financial institutions.

Where they're located: Omaha, Nebraska, USA
Website traffic: 3.09M/month


10. ProctorU

ProctorU provides secure live and automated online proctoring services for academic institutions and professional organizations. We protect exam integrity for more than 1,000 partners worldwide.

Where they're located: Birmingham, Alabama, USA
Website traffic: 910K/month


11. NeverBounce

Over 125,000 users trust NeverBounce for their real-time email verification and advanced email list cleaning & scrubbing services.

Where they're located: Cleveland, Ohio, USA
Website traffic: 240K/month


12. Mollie

Start growing your business with Mollie Payments: ✓ Accept payments in 15 minutes ✓ Honest pricing ✓ All leading payment methods. Get paid now »

Where they're located: Mobile, Alabama, USA
Website traffic: 7.34M/month


13. Dark Sky

Dark Sky is the most accurate source of hyperlocal weather information: with down-to-the-minute forecasts for your exact location, you'll never get caught in the rain again. (It's like magic!)

Where they're located: Fort Wayne, Indiana, USA
Website traffic: 3.57M/month


14. Plaid

Plaid helps all companies build fintech solutions by making it easy, safe and reliable for people to connect their financial data to apps and services.

Where they're located: San Francisco, California, USA
Website traffic: 650K/month


15. WPI

A WPI education has never been more relevant than it is today, because the demand for innovative thinkers who can solve problems on a global scale has never been greater.

Where they're located: Worcester, Massachusetts, USA
Website traffic: 710K/month


16. Pipl

Pipl makes deep connections among billions of disparate identifiers using multivariate linking to derive identity trust that customers can leverage.

  • Website traffic: 510K/month
  • Business rank: #34.5K

Check out their full website ➜

17. Vacasa

Vacasa professionally manages vacation rentals from coast to coast. Every home meets the highest standards of comfort & cleanliness, so you can book with confidence.

Where they're located: North Las Vegas, Nevada, USA
Website traffic: 3.69M/month


18. HathiTrust

HathiTrust is a partnership of academic and research institutions, offering a collection of millions of titles digitized from libraries around the world.

  • Website traffic: 2.18M/month
  • Business rank: #37.4K

Check out their full website ➜

19. DTE Energy

DTE Energy is a Detroit-based diversified energy company involved in the development and management of energy-related businesses and services nationwide.

Where they're located: Detroit, Michigan, USA
Website traffic: 2.62M/month


20. FDIC

The FDIC is an independent agency created by the U.S. Congress to maintain stability and public confidence in the nation’s financial system.

Where they're located: Karaganda Region, Kazakhstan
Website traffic: 510K/month


21. NYC Open Data

NYC Open Data helps New Yorkers use and learn about City data

Where they're located: Manhattan Community Board 1, New York, USA
Website traffic: 70K/month


22. REST

REST is an acronym for REpresentational State Transfer. It is architectural style for distributed hypermedia systems and was first presented by Roy Fielding.

Where they're located: Koeru, Estonia
Website traffic: 250K/month


23. Apigee

Power your APIs with a leader three times running. Apigee positioned highest for execution and completeness of vision in full lifecycle API management.

Where they're located: San Jose, California, USA
Website traffic: 600K/month


24. News API

Search worldwide news articles and headlines from across the web in real-time with our free News API.

Where they're located: Detroit, Michigan, USA
Website traffic: 160K/month


25. Assist

The ASSIST system (assist.org) is the official statewide database and online resource that shows prospective California transfer students how courses they complete at a community college may be used to satisfy elective, general education, and major requirements at a CSU or UC campus.

  • Business rank: #69.1K

Check out their full website ➜

26. Scraper API

Scraper API is a web scraping API that handles proxy rotation, browsers, and CAPTCHAs so developers can scrape any page with a single API call. Get started with 1000 free API calls!

How much they make:


27. Garland Tools

Garland Tools. FFXIV tools & resources. Garland Data. everything database. crafting lists. equipment calculators · Garland Bell. gathering timers.

  • Website traffic: 560K/month
  • Business rank: #72.8K

Check out their full website ➜

28. MTN Group

Headquarted in Johannesburg, MTN is a pure-play emerging markets mobile telecommunications operator at the forefront of technological and digital changes.

Where they're located: Ngambé-Tikar, Centre, Cameroon


29. Marqeta

Instantly issue cards and process card payments with our open API platform. Learn how Marqeta's modern card issuing platform empowers businesses and innovators.

Where they're located: Oakland, California, USA

30. api-football

Restful API for Football data +690 competitions, Livescore, standings, teams, odds, bookmakers, fixtures, events, line-ups, players, statistics, predictions

Where they're located: Saint-Sulpice-les-Champs, New Aquitaine, France


31. Spreedly

Build best-in-market payment systems by connecting to any payment service. Enable, optimize, and analyze online revenue with Spreedly’s flexible payments platform.

Where they're located: Durham, North Carolina, USA
Website traffic: 80K/month


32. American Petroleum Institute

The American Petroleum Institute (API) is the only national trade association that represents all aspects of America’s oil and natural gas industry. Our more than 600 corporate members, from the largest major oil company to the smallest of independents, come from all segments of the industry.

Where they're located: San Jose, California, USA
Website traffic: 380K/month


33. PortlandMaps

PortlandMaps provides a wide variety of data is available for the Portland Metropolitan Area. The datasets available through PortlandMaps include Assessor/Tax Lot Information. Aerial Photography.

  • Website traffic: 150K/month
  • Business rank: #107K

Check out their full website ➜

TransLink is Metro Vancouver’s transportation network, serving residents and visitors with public transit, major roads, bridges and Trip Planning.

Where they're located: Vancouver, Washington, USA
Website traffic: 450K/month


35. UC Health

At UC Health, the region's top clinicians and researchers provide world-class care for Cincinnati and beyond. Call (513) 475-8000 for appointments.

Where they're located: Cincinnati, Ohio, USA

36. Racing Australia

Racing Australia is the national industry body representing Thoroughbred racing in Australia. Australian Horse Racing results, Horse Racing Materials.

Where they're located: South Australia, Australia
Website traffic: 480K/month


37. Jitterbit

Connect SaaS, on-premises & cloud apps while instantly infusing intelligence into any business process. Learn more about API transformation with Jitterbit..


38. PortWallet

PortWallet is the leading advanced payment gateway for the Bangladesh market. Single API with all connectivities including VISA, Mastercard, Nexus, bKash, DBBL Mobile Banking and more

Where they're located: Dighalia, Dhaka Division, Bangladesh


39. Renoworks

Meet Renoworks Custom home visualization solutions for your business RENOWORKS develops interactive visualization experiences that ENGAGE YOUR CUSTOMERS

Where they're located: Reno, Nevada, USA
Website traffic: 350K/month


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41. Cherwell Software

The leading ITSM software tool with proven business results, shorter implementations, and simpler licensing models. Low-code workflow automation at its best

Where they're located: Colorado Springs, Colorado, USA
Website traffic: 110K/month


42. Intrinio

Intrinio provides US market data, company fundamentals data, options data and SEC data, powered by advanced data quality technology and delivered through Intrinio's financial data API and other tools.

Where they're located: Saint Petersburg, Florida, USA


43. Fomo

Fomo is the world's first social proof marketing platform.

How much they make: $1.08M/year
Where they're located: Austin, TX, USA
How much did it cost to start: $0
Current team size: 5


How I Bought A Shopify App And Grew It To A $1M/Year

Fomo, a social proof tool for eCommerce stores, scaled its original business by 600% and now generates >$1m in annual revenue through product-led growth via integrations and an extensive case study library.

Ryan started Fomo about 8 years ago
Ryan grew the business to $90K/month
Read by 4,201 founders