Top 166 Development APIs For Developers
Development
Sheet2API
Easy Google Sheets and Excel Online API.
Sheetsu
Easy google sheets integration.
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Learn moreSerpApi - Search API
SerpApi's Search API makes it easy and fast to scrape Google and other search engines.
SnapAPI
Developer utility API with 13+ tools: QR codes, screenshots, image processing, hashing, and more.
Sonar
Project Sonar DNS Enumeration API.
SonarQube
SonarQube REST APIs to detect bugs, code smells & security vulnerabilities.
SQLable
CSV to JSONL conversion API.
StackExchange
Q&A forum for developers.
Statically
A free CDN for developers.
Supportivekoala
Autogenerate images with template.
Svix
Webhooks as a Service.
TalorData
Get structured results from Google, Bing, Yandex, and DuckDuckGo through one API, with fast, reliable responses.
Tolgee
Open-source localization (i18n) platform enabling you to translate you app fast.
Tyk
Api and service management platform.
UserAgent
User agent parsing API is designed to help you better understand and interact with your users. By identifying browser, device, and OS data from user agent strings, this API empowers you with accurate, real-time insights into your audience.
Wandbox
Code compiler supporting 35+ languages mentioned at wandbox.org.
Web Scraping API
Extract structured data from any public URL.
WebScraping.AI
Web Scraping API with built-in proxies and JS rendering.
YAMLine
Convert YAML to JSON (on-the-fly).
ZenRows
Web Scraping API that bypasses anti-bot solutions while offering JS rendering, and rotating proxies.
Zuplo
API platform for Development, Deployment, and Docs - add auth, rate-limiting, and monetization fast.
Guides
All guides- Best SerpApi Alternatives in 2026, RankedThe best SerpApi alternatives in 2026, ranked by price per search, free tier and data source, with every price read from the vendor's own page in October 2026.
- API Response Time: What 99 Public APIs Actually DoWe timed 99 live public APIs. The median answered in 446 ms, the server's own share was 195 ms, and distance mattered more than code. What counts as good.
- The State of Public APIs 2026: Data From 1,580 APIsWe measured all 1,580 public APIs in our directory. How many need a key, OAuth or nothing, which work from a browser, what is growing, and how many are down.
- API Caching: What 87 Public APIs Actually SendWe read the cache headers of 87 live public APIs. 31% send none, and only 37% answer a conditional request with a 304. What that means and how to cache them.
- Best Auth0 Alternatives in 2026, RankedThe best Auth0 alternatives in 2026, ranked, with every free tier and open-source repo checked in September 2026. The headline user allowances do not compare.
- Best ngrok Alternatives in 2026, RankedThe best ngrok alternatives in 2026, ranked, with every licence and last commit checked, plus why the most recommended free option has not shipped in a year.
- Cursor Pagination: What Real API Cursors ContainWe decoded the pagination cursors of live public APIs. Most are not opaque, and one silently returns a different result set if your query changes mid-loop.
- API Pagination: What 51 Public APIs Actually DoWe called 76 keyless public APIs to see how they paginate. Two thirds return no pagination metadata at all. Here are the measured results and how to loop each style.
- Best Swagger Alternatives in 2026, RankedThe best Swagger UI alternatives in 2026, ranked, with every free tier and licence checked today, plus what 385 real API doc pages say about rot.
- API Documentation Examples: 6 Worth CopyingSix real API documentation examples worth copying, picked from the 430 public APIs whose docs we index and link-check, plus what rot data says about them.