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Top 9 APIs in Open Source

The best APIs within the Open Source category - based on our collection of reviews & verified products.

Cal.com Amplication Hasura APIVerve How to GraphQL GraphQL Playground Warrant authzed Mock API Generator

Product categories

API Tools APIs Calendar And Scheduling Developer Tools GraphQL Open Source Productivity Prototyping Realtime Backend / API SaaS Software Engineering Web App

Summary

The top products on this list are Cal.com, Amplication, and Hasura. All products here are categorized as: Tools and platforms for creating and using application programming interfaces. We recommend LibHunt for [discovery and comparisons of open-source projects](https://www.libhunt.com/). One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.
  1. Cal.com Landing Page
    Cal.com Landing Page
    1

    Cal.com

    Cal.com (formerly Calendso) is the open source Calendly alternative.
    Pricing:
    • Open Source

    #Productivity #Appointments and Scheduling #Open Source 57 social mentions

  2. Amplication Landing Page
    Amplication Landing Page
    2

    Amplication

    Instantly generate Node.js apps with GraphQL and REST API
    Pricing:
    • Open Source

    #Open Source #Logging #Influencer Marketing 71 social mentions

  3. Hasura Landing Page
    Hasura Landing Page
    3

    Hasura

    Hasura is an open platform to build scalable app backends, offering a built-in database, search, user-management and more.
    Pricing:
    • Open Source

    #API Tools #Realtime Backend / API #Mobile Push Messaging 123 social mentions

  4. APIVerve Landing Page
    APIVerve Landing Page
    4

    APIVerve

    One API Key, countless APIs. Unlock limitless possibilities
    Pricing:
    • Freemium
    • Free Trial

    #API Tools #Developer Tools #APIs 1 user reviews

  5. How to GraphQL Landing Page
    How to GraphQL Landing Page
    5

    How to GraphQL

    Open-source tutorial website to learn GraphQL development
    Pricing:
    • Open Source

    #Realtime Backend / API #GraphQL #Developer Tools 2 social mentions

  6. GraphQL Playground Landing Page
    GraphQL Playground Landing Page
    6

    GraphQL Playground

    GraphQL IDE for better development workflows

    #Realtime Backend / API #GraphQL #Developer Tools 12 social mentions

  7. Warrant Landing Page
    Warrant Landing Page
    7

    Warrant

    Authorization and access control infrastructure for developers
    Pricing:
    • Open Source

    #SaaS #Security #Developer Tools 22 social mentions

  8. authzed Landing Page
    authzed Landing Page
    8

    authzed

    The platform to store, compute, and validate app permissions

    #Personal Productivity #Developer Tools #Web App 9 social mentions

  9. Mock API Generator Landing Page
    Mock API Generator Landing Page
    9

    Mock API Generator

    Generate custom data & API to build apps in less than 30s

    #Data Extraction #Prototyping #Web App 3 social mentions

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Related categories

💻 Developer Tools 🔗 GraphQL ⚡ Realtime Backend / API 🌐 Web App 🔍 API Tools

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If you want to make changes on any of the products, you can go to its page and click on the "Suggest Changes" link. Alternatively, if you are working on one of these products, it's best to verify it and make the changes directly through the management page. Thanks!
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