Top 12 open-source products relevant to API and Developer Tools

Design, debug, test, and mock APIs locally, on Git, or cloud. Build better APIs collaboratively for the most popular protocols with a dev‑friendly UI, built-in automation, and an extensible plugin ecosystem.

Open Source

Instantly generate a free, unique URL and email address to test, inspect, and automate (with a visual workflow editor and scripts) incoming HTTP requests and emails.

Open Source freemium $14.0 / Monthly

Easy mocking of any system you integrate with via HTTP or HTTPS.

Open Source

Specify is the Design Data Platform for your design & dev teams:🎨 Collect your design tokens and assets from Figma🤖 Store them in a single source of truth⚡️ Distribute your brand with custom delivery pipelinesGet started for free → specifyapp.com.

Open Source

Fresh API monitoring and Site Transaction Monitoring. From one great dashboard.

Open Source

API Testing and Monitoring made simple.

Open Source

A Simple Application Programming Interface (API) to help connect websites and mobile applications to trusted reforestation organizations to have trees planted.

Open Source free

The next-generation Rest API framework.

Open Source

With GraphQL Portal, you can connect any of your data-sources: REST APIs, databases, Salesforce, SAP, Oracle, Magento, AEM, PIM, DAM, CRM into a single graph, easy to integrate with any front-end applications.

Open Source freemium $19.0 / Monthly (Individual limited to 1000 requests per month)

Fast, testable, Scala services built on TwitterServer and Finagle, by Twitter.

Open Source

Advanced Natural Language Processing API to Build your Solutions.

Open Source paid Free Trial

Qodex.ai - The First AI-Powered Virtual QA Engineer.

Open Source freemium $99.0 / Monthly ("1000 Test Scenario Builds" , "1000 AI Credits" )