Best API Gateways & Backends GitHub Repositories

self-hosted media server with a Jellyfin-compatible API

PennyWise automatically reads transaction SMS messages and transforms them into organized financial data with on-device AI assistance. No manual entry, no cloud processing, complete privacy.

Devopness: AI DevOps on your cloud. Deploy apps, infra and CI/CD. Any cloud and any stack, one MCP. Deterministic API, opinionated and fully configurable. No cloud credentials in AI chats. Free plan.

Modern, self-hosted RSS reader with smart folders, powerful search, and a clean three-pane reading experience. Built with Vue and Express.

Use your Claude and ChatGPT subscriptions in Cursor, Cline, Aider, Claude Code and the Agent SDK: one local endpoint, failover, pooling.

AI image studio for DeepSeek Harness — generate, edit & compare images in chat, with 500+ prompts, gallery, multi-model workflows and ComfyUI.

Engine-agnostic LLM gateway in Rust. Full OpenAI & Anthropic API compatibility across vLLM, TRT-LLM, TokenSpeed, SGLang, OpenAI, Gemini & more. Industry-first gRPC pipeline, KV cache-aware routing, chat history, tokenization caching, Responses API, embeddings, WASM plugins, MCP, and multi-tenant auth.

Async Python wrapper for Seedance, Kling, MiniMax and Wan video generation. Supports CLI and a local web UI

Amazon Product Advertising Ruby API

⚡ Kotlin Coroutines binding APIs for Android UI widgets from the platform and support libraries

Web-based suite of tools for administrators and developers to interact with the Force.com APIs

Kubernetes metrics-related API types and clients

SDKs for CoinAPI & FinFeedAPI

A configuration editing tool and API

A Java library for communicating with the Twilio REST API and generating TwiML.

Codex CLI multi-account OAuth manager with account switching, health checks, runtime rotation, diagnostics, and recovery tools for @openai/codex

GeoNetwork is a catalog application to manage spatially referenced resources. It provides powerful metadata editing and search functions as well as an interactive web map viewer. It is currently used in numerous Spatial Data Infrastructure initiatives across the world.

Everest - Celeste Mod Loader / Mod API

Local codebase intelligence CLI + MCP server for AI coding agents: SQLite code graph, 28 languages, 287 commands, 246 MCP tools, change-safety gates, audit evidence, zero API keys.

Self-hosted Enterprise and Personal AI + agent runtime in .NET (NativeAOT-friendly)