Development APIs remove busywork from software teams: code execution sandboxes, screenshot services, proxy rotation, webhook testing, and CI helpers. Most are freemium with generous developer tiers, but watch for CORS restrictions — many are designed for backend use only. Health status matters more here than in most categories, since broken dev tools tend to stay broken.
| API | Pricing | Auth | CORS | Health | |
|---|---|---|---|---|---|
| API Grátis Multiples services and public APIs | Freemium | No | No | Profile | |
| API League World-class APIs in a single hub | Freemium | API Key | Yes | Profile | |
| APIMATIC API Transformer API Transform API Descriptions from/to various formats | Free | Unknown | Yes | Profile | |
| Abacus Free and simple counting service. You can use it to track page hits and specific events | Free | No | Yes | Profile | |
| Ably Platform API The [REST API specification](https://www.ably.io/documentation/rest-api) for Ably. | Free | Unknown | Yes | Profile | |
| Abstract Screenshot Take programmatic screenshots of web pages from any website | Freemium | API Key | No | Profile | |
| Agify.io Estimates the age from a first name | Freemium | No | Yes | Profile | |
| Amazonscraperapi Amazon product, search & batch scraping API with residential proxies (1000 free) | Free | API Key | No | Profile | |
| AmberOne API Turn any website into a build-ready Android, iOS, PWA or Electron app project | Free | API Key | No | Profile | |
| Anchore Engine API Server API This is the Anchore Engine API. Provides the primary external API for users of the service. | Free | Unknown | Yes | Profile | |
| ApiFlash Chrome based screenshot API for developers | Freemium | API Key | No | Profile | |
| ApicAgent Extract device details from user-agent string | Freemium | No | No | Profile | |
| App Center Client API Microsoft Visual Studio App Center API | Free | Unknown | Yes | Profile | |
| App Store Connect API App Store Connect API public API. | Paid | Unknown | Yes | Profile | |
| Appwrite API Appwrite backend as a service cuts up to 70% of the time and costs required for building a modern application. We abstract and simplify common development tasks behind a REST APIs, to help you develop your app in a fast | Paid | Unknown | Yes | Profile | |
| ApyHub: The API Marketplace for Developers and Builders Build and ship faster with 150+ APIs to connect to your application | Freemium | API Key | No | Profile | |
| Asana Asana API This is the interface for interacting with the [Asana Platform](https://developers.asana.com). Our API reference is generated from our [OpenAPI spec] (https://raw.githubusercontent.com/Asana/developer-docs/master/defs/as | Paid | Unknown | Yes | Profile | |
| Background Removal API Remove the background of any image | Free | Unknown | Yes | Profile | |
| Base API Building quick backends | Paid | API Key | Yes | Profile | |
| Bitbucket Bitbucket API | Freemium | OAuth | No | Profile | |
| Bitbucket API Code against the Bitbucket API to automate simple tasks, embed Bitbucket data into your own site, build mobile or desktop apps, or even add custom UI add-ons into Bitbucket itself using the Connect framework. | Unknown | Unknown | Yes | Profile | |
| Bitbucket Cloud REST API REST API for Bitbucket repositories, pull requests, branches, workspaces, and pipelines. | Freemium | API Key | Yes | Profile | |
| Blague.xyz API La plus grande API de Blagues FR/The biggest FR jokes API | Unknown | API Key | Yes | Profile | |
| Blitapp Schedule screenshots of web pages and sync them to your cloud | Freemium | API Key | No | Profile | |
| Bored API 2 Find random activities to fight boredom | Unknown | Unknown | Unknown | Profile | |
| BrowserCat Headless browser API for automation, scraping, and more | Freemium | API Key | No | Profile | |
| Browshot Easily make screenshots of web pages in any screen size, as any device | Freemium | API Key | No | Profile | |
| Browshot API Take screenshots of any website in real time | Free | Unknown | Yes | Profile | |
| Bulk WHOIS API Domain API (WHOIS, Check, Batch) | Free | Unknown | Yes | Profile | |
| CDNJS Library info on CDNJS | Free | No | Yes | Profile | |
| CORS Proxy Get around the dreaded CORS error by using this proxy as a middle man | Free | No | No | Profile | |
| Catalog Inventory API Catalog Inventory | Paid | Unknown | Yes | Profile | |
| Ciprand Secure random string generator | Free | No | No | Profile | |
| Clever-Cloud API Public API for managing Clever-Cloud data and products | Paid | Unknown | Yes | Profile | |
| Cloudflare Trace Get IP Address, Timestamp, User Agent, Country Code, IATA, HTTP Version, TLS/SSL Version & More | Free | No | No | Profile | |
| Codex Online Compiler for Various Languages | Free | No | No | Profile | |
| Color Name API An API that provides names for colors based on their hex value | Unknown | Unknown | Yes | Profile | |
| Contentful Images Used to retrieve and apply transformations to images | Freemium | API Key | No | Profile | |
| Control API v1 API Use the Control API to manage your applications, namespaces, keys, queues, rules, and more. Detailed information on using this API can be found in the Ably <a href="https://ably.com/documentation/control-api">developer d | Paid | API Key | Yes | Profile | |
| Convex HTTP API HTTP actions and API endpoints for Convex backend applications. | Freemium | API Key | Yes | Profile | |
| Corsfix Corsfix lets you fetch any resource and bypass CORS errors, free for development environment | Freemium | No | Yes | Profile | |
| Databricks Service to manage your databricks account,clusters, notebooks, jobs and workspaces | Freemium | API Key | No | Profile | |
| Datto|Autotask PSA Rest API Datto|Autotask PSA Rest API public API. | Unknown | Unknown | Yes | Profile | |
| Debian Code Search API OpenAPI for https://codesearch.debian.net/ | Unknown | Unknown | Yes | Profile | |
| DigitalOcean API DigitalOcean API v2 for managing droplets, Kubernetes clusters, volumes, load balancers, databases, and networking resources. | Freemium | API Key | No | Profile | |
| Docker Hub Interact with Docker Hub | Free | API Key | No | Profile | |
| Etherpad API Etherpad is a real-time collaborative editor scalable to thousands of simultaneous real time users. It provides full data export capabilities, and runs on your server, under your control. | Paid | Unknown | Yes | Profile | |
| Extpose Extpose API Extpose — in‑store performance analytics and optimization tool for Chrome extensions. [https://extpose.com](https://extpose.com) | Free | Unknown | Yes | Profile | |
| Form Creation API Create and manage customizable forms within your applications | Freemium | API Key | No | Profile | |
| GameSparks Game Details API The API to manage the GameSparks game details | Free | Unknown | Yes | Profile | |
| Gcore CDN Make your app fast and responsive for a global audience with Gcore CDN. | Freemium | API Key | No | Profile | |
| Gcore Cloud Scalable, secure, and reliable hybrid cloud services anywhere in the world. | Freemium | API Key | No | Profile | |
| Gcore DNS Fast and resilient DNS hosting service by Gcore. Improve the performance and availability of your online business. | Freemium | API Key | No | Profile | |
| Genderize.io Estimates a gender from a first name | Freemium | No | Yes | Profile | |
| Generate Full Webpage Screenshot Dynamically capture full page screenshots of websites. | Freemium | API Key | No | Profile | |
| Ghost Get Published content into your Website, App or other embedded media | Free | API Key | No | Profile | |
| GitHub Make use of GitHub repositories, code and user info programmatically | Freemium | OAuth | Yes | Profile | |
| GitHub GraphQL API GraphQL API for GitHub repositories, issues, pull requests, organizations, users, and projects. | Freemium | API Key | Yes | Profile | |
| GitHub v3 REST API GitHub REST API — repos, issues, PRs, Actions, users, orgs. Base https://api.github.com, docs https://docs.github.com/en/rest. | Freemium | OAuth | Yes | Profile | |
| Gitlab Automate GitLab interaction programmatically | Freemium | OAuth | Yes | Profile | |
| Gitlab Gitlab API The platform for modern developers GitLab unifies issues, code review, CI and CD into a single UI | Free | Unknown | Yes | Profile | |
| Google API Discovery Service Official Google API Discovery Service REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google API Gateway API Official Google API Gateway API REST API (v1beta) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google API Keys API Official Google API Keys API REST API (v2) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google API Management API Official Google API Management API REST API (v1alpha) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google API hub API Official Google API hub API REST API (v1) discovered via Google APIs Discovery Service. | Free | API Key | Yes | Profile | |
| Google Accelerated Mobile Pages (AMP) URL API Official Google Accelerated Mobile Pages (AMP) URL API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Admin SDK API Official Google Admin SDK API REST API (datatransfer_v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Agent Registry API Official Google Agent Registry API REST API (v1alpha) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google AlloyDB API Official Google AlloyDB API REST API (v1alpha) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Android Developer ID Status API Official Google Android Developer ID Status API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Android Management API Official Google Android Management API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Apigee API Official Google Apigee API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google App Engine Admin API Official Google App Engine Admin API REST API (v1alpha) discovered via Google APIs Discovery Service. | Free | OAuth | Yes | Profile | |
| Google App Hub API Official Google App Hub API REST API (v1alpha) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google App Lifecycle Manager API Official Google App Lifecycle Manager API REST API (v1beta1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Application Integration API Official Google Application Integration API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Apps Script API Official Google Apps Script API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Area120 Tables API Official Google Area120 Tables API REST API (v1alpha1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Artifact Registry API Official Google Artifact Registry API REST API (v1beta1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Bare Metal Solution API Official Google Bare Metal Solution API REST API (v2) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google BeyondCorp API Official Google BeyondCorp API REST API (v1alpha) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Binary Authorization API Official Google Binary Authorization API REST API (v1beta1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Blogger API Official Google Blogger API REST API (v3) discovered via Google APIs Discovery Service. | Unknown | API Key | Yes | Profile | |
| Google CSS API Official Google CSS API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Checks API Official Google Checks API REST API (v1alpha) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Chrome Management API Official Google Chrome Management API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Chrome Policy API Official Google Chrome Policy API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Chrome Web Store API Official Google Chrome Web Store API REST API (v1.1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Civic Information API Official Google Google Civic Information API REST API (v2) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Classroom API Official Google Google Classroom API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Cluster Director API Official Google Cluster Director API REST API (v1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Content API for Shopping Official Google Content API for Shopping REST API (v2.1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Custom Search API Official Google Custom Search API REST API (v1) discovered via Google APIs Discovery Service. | Free | API Key | Yes | Profile | |
| Google Data Labeling API Official Google Data Labeling API REST API (v1beta1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Data Lineage API Official Google Data Lineage API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Data Manager API Official Google Data Manager API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Data Portability API Official Google Data Portability API REST API (v1beta) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Data pipelines API Official Google Data pipelines API REST API (v1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Dataflow API Official Google Dataflow API REST API (v1b3) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile |
Start with pricing and auth: free tiers and no-auth APIs are fastest to prototype with. Then check CORS if your app calls the API from the browser, and health before you commit — a great API that's been down for a week will block your launch. Each profile below shows all of these signals plus rate limits where documented.