Open Source APIs

Popular first highlights editorial picks, then ranks providers by monthly downloads of their official SDKs on npm and PyPI (measured 2026-10-18). Others follow A–Z.

Fruition

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Fusio

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Gentics Mesh

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Gigantum

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Git

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Google Authenticator

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Google BERT

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Gorse

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Graphite

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GraphQL

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GraphQL for WordPress

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GraphQL Mesh

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Gridsome

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Grist

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Grouparoo

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Hanko.io

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HASH

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Hashdocs

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HashiCorp

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Home Assistant

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HTTP Toolkit

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InfluxData

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InfluxDB

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JaegerTracing

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jami

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Jamroom

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JAMstack CMS

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Jitsi

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Jitsu

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Jovo

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JSON Web Tokens

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Jupyter Notebook

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Karate Labs

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Keras

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Keycloak

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Krayin

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Kubeshop

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Kusk

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Lago

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LakeFS

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Laravel Notification Channels

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Lighthouse

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LiteLLM

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Logstash

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Logz.io

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Luos

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MDX

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Meething + dWebRTC

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Counts reflect unique named profiles assigned to this category. Documentation and integration details vary by provider.