Self-hosted projects tagged “REST API”

Ollama is a local LLM runtime that lets you pull, run, and customize models, offering a CLI and REST API for chat, generation, and embeddings.

MITActively maintained

Alternative to:

OpenAI API+15

Feature-rich, self-hosted AI interface that integrates Ollama and OpenAI-compatible APIs, offers RAG, vector DB support, image tools, RBAC and observability.

Actively maintained

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Open WebUI Cloud+19

Supabase is an open source Postgres development platform providing authentication, auto-generated REST/GraphQL APIs, realtime subscriptions, edge functions, file storage, and vector embeddings.

Apache-2.0Actively maintained

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Firebase+10

Open-source PDF platform to edit, convert, OCR, sign, redact, and automate PDF workflows via a web UI and REST API.

Actively maintained

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Adobe Acrobat+19

Open-source platform to control smart home devices, build automations and dashboards, with broad third-party integrations and local-first privacy.

Apache-2.0Actively maintained

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Google Home+15

Hoppscotch Community Edition is an open-source API development and testing tool for REST, GraphQL, WebSocket, SSE, MQTT, and Socket.IO with collections and environments.

MITActively maintained

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Postman+9

Caddy is a fast, extensible Go web server and reverse proxy with automatic HTTPS (ACME), HTTP/1.1, HTTP/2, and HTTP/3 support, and a JSON config API.

Apache-2.0Actively maintained

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Caddy Cloud+8

Open-source headless CMS for building customizable content APIs with an admin UI, supporting REST/GraphQL and multiple databases.

Actively maintained

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Strapi Cloud+16

Prometheus is an open-source monitoring and time-series database for collecting metrics, querying with PromQL, and alerting on system and application health.

Apache-2.0Actively maintained

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Datadog Cloud Monitoring+17

Open-source Airtable alternative that turns Postgres/MySQL/SQLite into a no-code spreadsheet UI with views, permissions, integrations, and REST APIs.

Actively maintained

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Airtable+10

Memos is a lightweight, privacy-first self-hosted note-taking service with Markdown, fast search, and sharing features for personal notes, wikis, and team knowledge.

MITActively maintained

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Memos Cloud+19

Open-source Go backend providing embedded SQLite, realtime (SSE) subscriptions, auth (JWT/OAuth2), file storage, admin UI and REST-style APIs for web and mobile apps.

MITActively maintained

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PocketBase Cloud+17

Meilisearch is a lightning-fast search engine API for apps and websites, offering typo-tolerant full-text search plus vector and AI-ready hybrid retrieval.

Actively maintained

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Algolia+16

Gitea is a lightweight, self-hosted Git service with repositories, pull requests, issues, wiki, packages, and built-in CI/CD via Actions and runners.

Jellyfin is a free, self-hosted media server to organize, manage, and stream movies, TV, music, and photos to web, mobile, and TV clients.

GPL-2.0Actively maintained

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Plex+19

Mastodon is an open-source, ActivityPub-compatible social network server for microblogging, offering federated timelines, moderation tools, media support, and APIs.

AGPL-3.0Actively maintained

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Threads+7

Run LLMs, image, and audio models locally with an OpenAI-compatible API, optional GPU acceleration, and a built-in web UI for managing and testing models.

MITActively maintained

Alternative to:

OpenAI API+19

Lightweight, open source self-hosted Git service designed for easy installation across platforms.

Discourse is open-source forum software for community discussion, support, and knowledge sharing, with moderation tools, customization, and built-in chat.

GPL-2.0Actively maintained

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Flarum Cloud+11

RSSHub generates RSS/Atom/JSON feeds for thousands of sites and services that don’t provide feeds, exposing them as subscribable endpoints you can self-host.

AGPL-3.0Actively maintained

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RSS.app+1

Payload is an open-source, TypeScript-first headless CMS for Next.js with an extensible admin UI, auth, drafts, access control, and APIs for building fullstack apps.

MITActively maintained

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Payload CMS Cloud+16

Hyperswitch is an open-source payments switch and orchestrator that connects multiple payment processors through a single API, with modules for routing, vaulting, retries, and reconciliation.

Apache-2.0Actively maintained

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Spreedly+8

Build and deploy internal tools, admin panels, and dashboards with a low-code UI builder that connects to databases and APIs and supports JavaScript logic and Git workflows.

Apache-2.0Actively maintained

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Retool+14

Halo is an open-source CMS and site builder with themes, plugins, an editor, backups, REST APIs, and optional AI extensions for content and knowledge sites.

GPL-3.0Actively maintained

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WordPress.com+18

Open-source, self-hosted messaging platform for secure team collaboration with real-time chat, audio calls, screen sharing, and integrations.

Actively maintained

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Slack+19

Directus turns any SQL database into a headless CMS with an admin app, role-based access control, and instant REST and GraphQL APIs for custom applications.

Actively maintained

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Directus Cloud+19

Open-source hierarchical notes and personal knowledge base with rich editing, full-text search, encryption, scripting, and optional self-hosted sync and web access.

AGPL-3.0Actively maintained

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Evernote+18

SearXNG is a privacy-respecting metasearch engine that aggregates results from many search services without tracking or profiling users.

AGPL-3.0Actively maintained

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Google Search+6

Open-source modular commerce platform for building custom B2C/B2B e-commerce backends with an admin dashboard, extensible modules, and APIs.

Actively maintained

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Medusa Cloud+8

Open-source, API-first commerce backend with modular architecture for custom storefronts and marketplaces.

Actively maintained

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Medusa Cloud+15