API Tools Tools — 334+ Options

Directus

Open-source data platform. Instant REST and GraphQL APIs.

Headless CMS

cmsheadlessopen-source

Visit → 34658★ 2 AI recommendations

Mercure

Real-time API protocol built on Server-Sent Events. Open source.

API Tools

realtimesseopen-source

Visit → 1 AI recommendations

Gotenberg

Docker-powered stateless API for PDF generation.

DevOps & Infrastructure

pdfapidocker

Visit → 1 AI recommendations

Bruno

Open-source API client. Stores collections in Git.

API Tools

apitestingopen-source

Visit → 9 AI recommendations

Swagger UI

Open-source interactive API documentation.

API Tools

apidocumentationopen-source

Visit → 1 AI recommendations

Stoplight

API design-first platform with visual editor.

API Tools

apidesigndocumentation

Visit →

Kreya

gRPC and REST API client for developers.

API Tools

apigrpcrest

Visit → 5 AI recommendations

Hoppscotch

Open-source API development ecosystem. Postman alternative.

API Tools

apitestingopen-source

Visit → 78829★ 15 AI recommendations

Insomnia

API design, debug, and test. Open-source core.

API Tools

apitestingopen-source

Visit → 38255★ 15 AI recommendations

Stripe £1/mo

Payment processing platform for internet businesses. Accept payments, send payouts.

Payments

paymentsstripecheckout

Visit → 7 AI recommendations

Payload CMS

The most powerful TypeScript headless CMS

Headless CMS

cmsheadlesstypescript

Visit → 41613★ 2 AI recommendations

Checkly

Monitoring for the modern DevOps stack

Monitoring & Uptime

monitoringapidevops

Visit →

twurple

Interact with Twitch API, chat, PubSub, and EventSub

API Tools

twitchapitypescript

Visit → 734★ 26 AI recommendations

Mastodon.py

Full-featured Python wrapper for the Mastodon API

API Tools

open-sourcepythonmastodon

Visit → 948★

Invoice as a Service

Simple invoicing REST API send JSON, get a PDF

Invoicing & Billing

open-sourceapiinvoicing

Visit → 213★

Explore

Track the tools AI agents actually recommend