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Top 100 Open Source APIs

"Discover the most versatile and impactful open source APIs available for your next project."

Open source APIs are critical for developers seeking to build, integrate, and enhance applications. From data manipulation to advanced machine learning models, this list captures the most valuable and versatile open source APIs available today, helping to unlock the power of technology in your projects.

Topics

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# Open Source APIs
- Subtitle: "Best APIs for open-source projects"
- Tagline: "Discover powerful APIs for development"
- Description: "Explore APIs for data, web, social media, payments, and health"
- 5 Topics

## Topics
- Data and Machine Learning: Keyword1, Keyword2, Keyword3, Keyword4, Keyword5...
- Web Development and REST APIs: Keyword1, Keyword2, Keyword3, Keyword4, Keyword5...
- Social Media and Communication: Keyword1, Keyword2, Keyword3, Keyword4, Keyword5...
- Payments and E-Commerce: Keyword1, Keyword2, Keyword3, Keyword4, Keyword5...
- Health and Environment: Keyword1, Keyword2, Keyword3, Keyword4, Keyword5...

Data and Machine Learning

"APIs to help you manipulate data, build models, and work with machine learning."
  1. TensorFlow.js - ML library in JavaScript.
  2. Pandas - Data manipulation library.
  3. Keras - Deep learning API for Python.
  4. OpenAI GPT-3 - Language model API.
  5. SciPy - Python-based ecosystem for mathematics.
  6. Hugging Face - NLP models and tools.
  7. scikit-learn - Machine learning library for Python.
  8. D3.js - JavaScript library for producing dynamic data visualizations.
  9. FastAPI - Fast Python web framework.
  10. Apache Kafka - Distributed streaming platform.

Web Development and REST APIs

"APIs designed for web services, RESTful development, and cloud integration."
  1. Express.js - Fast, unopinionated web framework for Node.js.
  2. Flask - Python web framework.
  3. Django REST Framework - Powerful and flexible toolkit for building Web APIs.
  4. Node.js - JavaScript runtime built on Chrome’s V8 engine.
  5. GraphQL - A query language for your API.
  6. Socket.io - Realtime communication engine.
  7. RESTful API for CRUD - Create, read, update, delete services.
  8. PostgREST - REST API for any Postgres database.
  9. Firebase - Platform developed by Google for creating mobile and web applications.
  10. Nginx - High-performance HTTP server and reverse proxy.

Social Media and Communication

"Open source APIs to power social interactions and enhance communication."
  1. Telegram API - API for interacting with Telegram's services.
  2. Slack API - Build Slack apps, bots, and workflows.
  3. Twilio - API for sending text messages and making voice calls.
  4. WhatsApp Business API - Connect with WhatsApp users programmatically.
  5. Facebook Graph API - Access Facebook’s social graph.
  6. Twitter API - Programmatic access to Twitter data.
  7. Discord API - API for building bots on Discord.
  8. SendGrid - API for sending email.
  9. Mailgun - Email API for sending, receiving, and tracking emails.
  10. Twitch API - API to interact with the live-streaming platform.

Payments and E-Commerce

"Leverage these APIs to power transactions and manage e-commerce workflows."
  1. Stripe API - API for accepting payments.
  2. PayPal REST API - Payment platform to accept payments online.
  3. Square API - In-person and online payment processing API.
  4. Braintree API - Payment processing platform API.
  5. Plaid API - Financial data connectivity API.
  6. Coinbase API - Cryptocurrency API.
  7. Amazon Pay API - Accept payments on websites using Amazon accounts.
  8. Shopify API - API for e-commerce stores.
  9. WooCommerce API - RESTful interface for WooCommerce store data.
  10. Authorize.net - Payment gateway API.

Health and Environment

"Vital APIs for healthcare applications, environmental data, and monitoring."
  1. OpenWeather API - Weather data API.
  2. NASA API - NASA’s open data and imagery.
  3. WHO API - Access to World Health Organization data.
  4. OpenFDA API - Public FDA data on food, drugs, and devices.
  5. US EPA API - Environmental data from the US Environmental Protection Agency.
  6. Smart Health Cards - API for health credential standards.
  7. OpenMRS API - Open-source medical record system API.
  8. FHIR API - Fast Healthcare Interoperability Resources for electronic medical data.
  9. Climacell API - Real-time hyper-local weather data.
  10. Fitbit API - API for Fitbit device data.

Top 100 List

  1. TensorFlow.js (Data and Machine Learning)
  2. Pandas (Data and Machine Learning)
  3. Keras (Data and Machine Learning)
  4. OpenAI GPT-3 (Data and Machine Learning)
  5. SciPy (Data and Machine Learning)
  6. Hugging Face (Data and Machine Learning)
  7. scikit-learn (Data and Machine Learning)
  8. D3.js (Data and Machine Learning)
  9. FastAPI (Data and Machine Learning)
  10. Apache Kafka (Data and Machine Learning)
  11. Express.js (Web Development and REST APIs)
  12. Flask (Web Development and REST APIs)
  13. Django REST Framework (Web Development and REST APIs)
  14. Node.js (Web Development and REST APIs)
  15. GraphQL (Web Development and REST APIs)
  16. Socket.io (Web Development and REST APIs)
  17. RESTful API for CRUD (Web Development and REST APIs)
  18. PostgREST (Web Development and REST APIs)
  19. Firebase (Web Development and REST APIs)
  20. Nginx (Web Development and REST APIs)
  21. Telegram API (Social Media and Communication)
  22. Slack API (Social Media and Communication)
  23. Twilio (Social Media and Communication)
  24. WhatsApp Business API (Social Media and Communication)
  25. Facebook Graph API (Social Media and Communication)
  26. Twitter API (Social Media and Communication)
  27. Discord API (Social Media and Communication)
  28. SendGrid (Social Media and Communication)
  29. Mailgun (Social Media and Communication)
  30. Twitch API (Social Media and Communication)
  31. Stripe API (Payments and E-Commerce)
  32. PayPal REST API (Payments and E-Commerce)
  33. Square API (Payments and E-Commerce)
  34. Braintree API (Payments and E-Commerce)
  35. Plaid API (Payments and E-Commerce)
  36. Coinbase API (Payments and E-Commerce)
  37. Amazon Pay API (Payments and E-Commerce)
  38. Shopify API (Payments and E-Commerce)
  39. WooCommerce API (Payments and E-Commerce)
  40. Authorize.net API (Payments and E-Commerce)
  41. OpenWeather API (Health and Environment)
  42. NASA API (Health and Environment)
  43. WHO API (Health and Environment)
  44. OpenFDA API (Health and Environment)
  45. US EPA API (Health and Environment)
  46. Smart Health Cards API (Health and Environment)
  47. OpenMRS API (Health and Environment)
  48. FHIR API (Health and Environment)
  49. Climacell API (Health and Environment)
  50. Fitbit API (Health and Environment)
  51. Apache Hadoop (Data and Machine Learning)
  52. Redis (Web Development and REST APIs)
  53. Elasticsearch (Data and Machine Learning)
  54. RabbitMQ (Web Development and REST APIs)
  55. Prometheus (Data and Machine Learning)
  56. Kubernetes (Web Development and REST APIs)
  57. GCP Speech-to-Text API (Social Media and Communication)
  58. OpenStreetMap API (Health and Environment)
  59. Microsoft Graph API (Social Media and Communication)
  60. Docker API (Web Development and REST APIs)
  61. Jenkins (Web Development and REST APIs)
  62. Sentry (Web Development and REST APIs)
  63. Vercel (Web Development and REST APIs)
  64. Contentful (Web Development and REST APIs)
  65. Algolia API (Web Development and REST APIs)
  66. Cloudflare API (Web Development and REST APIs)
  67. CircleCI API (Web Development and REST APIs)
  68. GitHub REST API (Web Development and REST APIs)
  69. Heroku API (Web Development and REST APIs)
  70. Travis CI API (Web Development and REST APIs)
  71. Stripe Connect API (Payments and E-Commerce)
  72. Flutterwave API (Payments and E-Commerce)
  73. Razorpay API (Payments and E-Commerce)
  74. Mollie API (Payments and E-Commerce)
  75. Revolut API (Payments and E-Commerce)
  76. Wise API (Payments and E-Commerce)
  77. TransferWise API (Payments and E-Commerce)
  78. Adyen API (Payments and E-Commerce)
  79. Mercado Pago API (Payments and E-Commerce)
  80. Zip API (Payments and E-Commerce)
  81. Google Maps API (Health and Environment)
  82. TomTom API (Health and Environment)
  83. HERE API (Health and Environment)
  84. World Bank API (Health and Environment)
  85. Yelp Fusion API (Social Media and Communication)
  86. Instagram Graph API (Social Media and Communication)
  87. YouTube Data API (Social Media and Communication)
  88. Vimeo API (Social Media and Communication)
  89. LinkedIn API (Social Media and Communication)
  90. Pinterest API (Social Media and Communication)
  91. Eventbrite API (Social Media and Communication)
  92. Meetup API (Social Media and Communication)
  93. GitLab API (Web Development and REST APIs)
  94. Bitbucket API (Web Development and REST APIs)
  95. Jenkins X API (Web Development and REST APIs)
  96. Figma API (Web Development and REST APIs)
  97. Trello API (Social Media and Communication)
  98. JIRA API (Web Development and REST APIs)
  99. Slack Real-Time Messaging API (Social Media and Communication)
  100. Airtable API (Web Development and REST APIs)

Top 100 Table

Rank Name Topic Tagline
1 TensorFlow.js Data and Machine Learning "ML library in JavaScript"
2 Pandas Data and Machine Learning "Data manipulation library"
3 Keras Data and Machine Learning "Deep learning API for Python"
4 OpenAI GPT-3 Data and Machine Learning "Language model API"
5 SciPy Data and Machine Learning "Python-based ecosystem"
6 Hugging Face Data and Machine Learning "NLP models and tools"
7 scikit-learn Data and Machine Learning "Machine learning library"
8 D3.js Data and Machine Learning "Dynamic data visualizations"
9 FastAPI Data and Machine Learning "Fast Python web framework"
10 Apache Kafka Data and Machine Learning "Distributed streaming platform"
11 Express.js Web Development and REST APIs "Fast, unopinionated framework"
12 Flask Web Development and REST APIs "Python web framework"
13 Django REST Framework Web Development and REST APIs "Toolkit for Web APIs"
14 Node.js Web Development and REST APIs "JavaScript runtime"
15 GraphQL Web Development and REST APIs "Query language for API"
16 Socket.io Web Development and REST APIs "Realtime communication engine"
17 RESTful API for CRUD Web Development and REST APIs "CRUD services"
18 PostgREST Web Development and REST APIs "REST API for Postgres"
19 Firebase Web Development and REST APIs "Mobile and web apps platform"
20 Nginx Web Development and REST APIs "HTTP server and reverse proxy"
21 Telegram API Social Media and Communication "API for Telegram services"
22 Slack API Social Media and Communication "Build Slack apps and bots"
23 Twilio Social Media and Communication "Text and voice API"
24 WhatsApp Business API Social Media and Communication "Programmatic access to WhatsApp"
25 Facebook Graph API Social Media and Communication "Access Facebook social graph"
26 Twitter API Social Media and Communication "Programmatic Twitter access"
27 Discord API Social Media and Communication "Build bots on Discord"
28 SendGrid Social Media and Communication "Email API for sending messages"
29 Mailgun Social Media and Communication "Email API for transactional email"
30 Twitch API Social Media and Communication "API for live-streaming platform"
31 Stripe API Payments and E-Commerce "Payments processing API"
32 PayPal REST API Payments and E-Commerce "Online payments platform"
33 Square API Payments and E-Commerce "In-person and online payments"
34 Braintree API Payments and E-Commerce "Payments platform API"
35 Plaid API Payments and E-Commerce "Financial data connectivity"
36 Coinbase API Payments and E-Commerce "Cryptocurrency exchange API"
37 Amazon Pay API Payments and E-Commerce "Payments using Amazon accounts"
38 Shopify API Payments and E-Commerce "API for e-commerce stores"
39 WooCommerce API Payments and E-Commerce "API for WooCommerce stores"
40

| Authorize.net API | Payments and E-Commerce | "Payment gateway API" | | 41 | OpenWeather API | Health and Environment | "Weather data API" | | 42 | NASA API | Health and Environment | "NASA open data and imagery" | | 43 | WHO API | Health and Environment | "World Health Organization data" | | 44 | OpenFDA API | Health and Environment | "FDA public data" | | 45 | US EPA API | Health and Environment | "Environmental data from EPA" | | 46 | Smart Health Cards API | Health and Environment | "Health credential standards" | | 47 | OpenMRS API | Health and Environment | "Medical record system API" | | 48 | FHIR API | Health and Environment | "Health data interoperability" | | 49 | Climacell API | Health and Environment | "Real-time weather data" | | 50 | Fitbit API | Health and Environment | "API for Fitbit device data" | | 51 | Apache Hadoop | Data and Machine Learning | "Open-source big data framework" | | 52 | Redis | Web Development and REST APIs | "In-memory data structure store" | | 53 | Elasticsearch | Data and Machine Learning | "Search and analytics engine" | | 54 | RabbitMQ | Web Development and REST APIs | "Message broker API" | | 55 | Prometheus | Data and Machine Learning | "Monitoring and alerting toolkit" | | 56 | Kubernetes | Web Development and REST APIs | "Container orchestration API" | | 57 | GCP Speech-to-Text API | Social Media and Communication | "Google's speech recognition API" | | 58 | OpenStreetMap API | Health and Environment | "Access OpenStreetMap data" | | 59 | Microsoft Graph API | Social Media and Communication | "API for Microsoft services" | | 60 | Docker API | Web Development and REST APIs | "API for Docker containers" | | 61 | Jenkins | Web Development and REST APIs | "Continuous integration API" | | 62 | Sentry | Web Development and REST APIs | "Error tracking API" | | 63 | Vercel | Web Development and REST APIs | "Cloud platform for static sites" | | 64 | Contentful | Web Development and REST APIs | "Headless CMS API" | | 65 | Algolia API | Web Development and REST APIs | "Search as a service API" | | 66 | Cloudflare API | Web Development and REST APIs | "API for Cloudflare services" | | 67 | CircleCI API | Web Development and REST APIs | "Continuous integration API" | | 68 | GitHub REST API | Web Development and REST APIs | "API for GitHub services" | | 69 | Heroku API | Web Development and REST APIs | "Platform as a service API" | | 70 | Travis CI API | Web Development and REST APIs | "API for continuous integration" | | 71 | Stripe Connect API | Payments and E-Commerce | "Connect platforms and users" | | 72 | Flutterwave API | Payments and E-Commerce | "Online payments platform API" | | 73 | Razorpay API | Payments and E-Commerce | "Payments API for India" | | 74 | Mollie API | Payments and E-Commerce | "Payments processing API" | | 75 | Revolut API | Payments and E-Commerce | "Financial services API" | | 76 | Wise API | Payments and E-Commerce | "Money transfer API" | | 77 | TransferWise API | Payments and E-Commerce | "API for cross-border payments" | | 78 | Adyen API | Payments and E-Commerce | "Payments processing API" | | 79 | Mercado Pago API | Payments and E-Commerce | "Payments platform for Latin America"| | 80 | Zip API | Payments and E-Commerce | "Installment payments API" | | 81 | Google Maps API | Health and Environment | "Access to Google Maps data" | | 82 | TomTom API | Health and Environment | "Maps and navigation API" | | 83 | HERE API | Health and Environment | "Location data and services API" | | 84 | World Bank API | Health and Environment | "World Bank data API" | | 85 | Yelp Fusion API | Social Media and Communication | "API for Yelp services" | | 86 | Instagram Graph API | Social Media and Communication | "Programmatic access to Instagram"| | 87 | YouTube Data API | Social Media and Communication | "Access to YouTube data" | | 88 | Vimeo API | Social Media and Communication | "API for Vimeo platform" | | 89 | LinkedIn API | Social Media and Communication | "Access to LinkedIn data" | | 90 | Pinterest API | Social Media and Communication | "API for Pinterest platform" | | 91 | Eventbrite API | Social Media and Communication | "Event management API" | | 92 | Meetup API | Social Media and Communication | "Event organization API" | | 93 | GitLab API | Web Development and REST APIs | "Git repository management API" | | 94 | Bitbucket API | Web Development and REST APIs | "API for Bitbucket services" | | 95 | Jenkins X API | Web Development and REST APIs | "Cloud-native CI/CD API" | | 96 | Figma API | Web Development and REST APIs | "API for Figma design platform" | | 97 | Trello API | Social Media and Communication | "API for Trello boards" | | 98 | JIRA API | Web Development and REST APIs | "Issue tracking API" | | 99 | Slack Real-Time Messaging API| Social Media and Communication| "API for real-time communication" | | 100 | Airtable API | Web Development and REST APIs | "API for Airtable platform" |

Conclusion

Whether you're working on machine learning, web development, social media, or healthcare, this list of top 100 open-source APIs offers versatile solutions to enhance your project. Explore the potential of these APIs to make your applications more efficient, scalable, and innovative.

Images

TensorFlow.js Pandas Keras OpenAI GPT-3 SciPy Hugging Face scikit-learn D3.js FastAPI Apache Kafka Express.js Flask Django REST Framework Node.js GraphQL Socket.io RESTful API for CRUD PostgREST Firebase Nginx Telegram API Slack API Twilio WhatsApp Business API Facebook Graph API Twitter API Discord API SendGrid Mailgun Twitch API Stripe API PayPal REST API Square API Braintree API Plaid API Coinbase API Amazon Pay API Shopify API WooCommerce API Authorize.net API OpenWeather API NASA API WHO API OpenFDA API US EPA API Smart Health Cards API OpenMRS API FHIR API Climacell API Fitbit API Apache Hadoop Redis Elasticsearch RabbitMQ Prometheus Kubernetes GCP Speech-to-Text API OpenStreetMap API Microsoft Graph API Docker API Jenkins Sentry Vercel Contentful Algolia API Cloudflare API CircleCI API GitHub REST API Heroku API Travis CI API Stripe Connect API Flutterwave API Razorpay API Mollie API Revolut API Wise API TransferWise API Adyen API Mercado Pago API Zip API Google Maps API TomTom API HERE API World Bank API Yelp Fusion API Instagram Graph API YouTube Data API Vimeo API LinkedIn API Pinterest API Eventbrite API Meetup API GitLab API Bitbucket API Jenkins X API Figma API Trello API JIRA API Slack Real-Time Messaging API Airtable API