The 93 best APIs & Dev Tools
A hand-picked collection of the best apis & dev tools tools, websites and resources, curated on DesignBookmark.
Polypane
The browser for ambitious web developers and designers.
GitHub
Where the world builds software — code, review and ship.
GitLab
The complete DevOps platform in a single application.
Cloudflare
The connectivity cloud — security, performance and edge compute.
Clerk
Complete user management and authentication for modern apps.
Postman
The API platform for building and using APIs.
Stripe
Payments infrastructure and APIs for the internet.
Twilio
APIs for SMS, voice, video and authentication.
Resend
The email API for developers, built on React Email.
Sentry
Application monitoring and error tracking for developers.
Algolia
The fast and reliable search and discovery API platform.
RapidAPI
The world's largest API hub to find and connect to APIs.
Hoppscotch
An open-source, lightweight API development ecosystem.
Mintlify
Beautiful, AI-native documentation that converts users.
Retool
The fast way to build internal tools and business apps.
PostHog
The open-source product analytics suite for engineers.
Snipcart
Add a shopping cart to any website with a few lines of code.
Lago
The open-source metering and usage-based billing platform.
Polar
Monetization for developers — payments, subscriptions and more.
Storybook
The industry-standard tool to build and document UI components.
CodeRabbit
AI-powered code reviews right inside your pull requests.
Vite
The next-generation frontend build tool, blazing fast.
Bun
A fast all-in-one JavaScript runtime, bundler and package manager.
Deno
A secure, modern runtime for JavaScript and TypeScript.
tRPC
End-to-end typesafe APIs made easy, no schemas or codegen.
WorkOS
APIs to make your app enterprise-ready — SSO, SCIM and more.
Insomnia
The open-source API client for REST, GraphQL and gRPC.
Bruno
A fast, Git-friendly, open-source API client.
ngrok
Put your localhost on the internet with secure tunnels.
Doppler
The platform to manage secrets and environment variables.
Trigger.dev
Open-source background jobs and workflows for developers.
Inngest
Durable functions and workflows for any backend.
Novu
The open-source notification infrastructure for developers.
Val Town
Write and deploy tiny JavaScript functions from the browser.
Pipedream
Connect APIs and build workflows with code-level control.
Postmark
Fast, reliable transactional email delivery for apps.
Formspree
Handle form backends and submissions without a server.
Getform
A form backend platform for designers and developers.
RevenueCat
In-app subscriptions and purchases made easy for apps.
CodeCanyon
Buy and sell scripts, plugins and code from developers.
DiceBear
An avatar library and API with many fun styles.
Fontsource
Self-host open-source fonts in a neatly bundled npm package.
Greptile
AI that understands your codebase for reviews and answers.
Meilisearch
A fast, open-source, hyper-relevant search engine.
Typesense
An open-source, typo-tolerant search engine.
Apidog
An all-in-one API design, testing and documentation tool.
Scalar
Open-source, beautiful API documentation and references.
Apollo GraphQL
The platform to build and scale a unified GraphQL API.
Hygraph
A federated, GraphQL-native headless content platform.
Playwright
Reliable end-to-end testing for modern web apps.
Cypress
Fast, easy and reliable testing for anything in a browser.
Vitest
A blazing-fast unit test framework powered by Vite.
BrowserStack
Test your web and mobile apps on real devices and browsers.
Liveblocks
Ready-made features to add collaboration to your product.
PartyKit
Build real-time, collaborative and multiplayer apps.
Pusher
Hosted APIs to build real-time apps at scale.
Checkly
Monitoring and synthetic testing for developers, as code.
Chromatic
Visual testing and review for Storybook UI components.
Appsmith
An open-source platform to build internal tools fast.
Mailtrap
An email delivery platform to test, send and control email.
LogRocket
Session replay and product analytics to fix issues fast.
GrowthBook
Open-source feature flags and A/B testing.
GitBook
A modern documentation platform for teams and products.
Plaid
Connect apps to users' bank accounts securely.
Braintree
A full-stack payments platform by PayPal.
Wappalyzer
Identify the tech stack of any website instantly.
tldraw
A tiny, infinite canvas whiteboard SDK and app.
Eraser
The whiteboard for engineering teams — diagrams as code.
Mermaid
Create diagrams and charts from text and code.
ScrapingBee
A web scraping API that handles proxies and headless browsers.
ScraperAPI
Handle proxies, browsers and CAPTCHAs with one API.
Browserless
Headless browser automation and scraping as a service.
Avocode
Inspect and hand off designs to code, from any tool.
SVGViewer
Optimize, edit and preview SVGs right in the browser.
Puppeteer
A Node library to control headless Chrome for automation.
Zod
TypeScript-first schema validation with static inference.
ESLint
The pluggable linting utility for JavaScript and JSX.
Prettier
An opinionated code formatter for many languages.
Biome
A fast formatter and linter for the web, in Rust.
Turborepo
A high-performance build system for JavaScript monorepos.
Nx
A smart, extensible build framework and monorepo tool.
pnpm
A fast, disk-space-efficient package manager.
Charles Proxy
An HTTP proxy and monitor to debug network traffic.
Mux
Video streaming and analytics API for developers.
1Password
Securely store, share and autofill passwords and secrets.
BuildShip
No-code API creation.
Firma.dev
Firma.dev offers an ultra-low-cost e-signature API designed for developers, allowing seamless integration into…
Keras
Deep learning API for fast, elegant, maintainable ML models. Supports JAX, TensorFlow, PyTorch.
Linq
Linq provides a robust API for integrating messaging capabilities like iMessage, RCS, and SMS directly into apps,…
Logo.dev
API to fetch logos for any brand in real time.
Orshot
Automate image creation for marketing with templates, API, and integrations.
Sent
Sent offers a messaging API that streamlines communication by integrating SMS, WhatsApp, and RCS into a single…
Yoku
Yoku provides reliable company data via its Brand Identity API, enhancing user experience and workflows.