Gateway GitHub Repositories (2026) · Open Source Tools

Production-ready Codex-compatible account-pool gateway with seamless failover, full-session recovery, native quota headers, WebSocket/HTTP bridge, and observability.

A lightweight, self-hosted AI subscription pool for teams.

A lightweight, self-hosted AI subscription gateway for internal teams, with account pooling, access control, and usage tracking.

Turn CNB cloud-workspace in-network AI into production OpenAI & Anthropic (Claude Code) APIs. Zero deps, v5.2 self-healing HA, quota CLI.

Self-hosted voice gateway in Go that speaks the OpenAI Realtime (GA) WebSocket protocol and runs a cascaded ASR → LLM → TTS pipeline behind it. Keep clients unchanged while swapping speech and LLM providers at runtime

The Conifer SDK — one gateway for cloud, local, and BYOK inference, with exact per-call cost receipts. TypeScript + Python + MCP.

Free, Open Source, Self-Hosted, for AI Gateway.

Devin upstream → OpenAI Responses / Anthropic Messages compatible API proxy

WhatsApp REST API gateway in Rust. Multi-device and the official WhatsApp Cloud API behind one API: 230+ endpoints for messaging, templates, Flows, commerce, payments, calls, groups, webhooks and fleet ops. Multi-session, multi-DB, single binary.

The open source, no-code MCP Server for AI-Native API Access

Adyen API Library for PHP

Self-hosted email gateway between your apps and a transactional mail provider (Postmark, Resend, Mailgun, AWS SES, or outbound-SMTP). Three ingress shapes (HTTP form, HTTP API, SMTP). One Docker container, one TOML config.

Versatile email infrastructure on AWS serverless

API Gateway bridging modern and legacy APIs with WSDL-to-OpenAPI, SOAP-to-REST, XML, OAuth2, and GraphQL.

EventMesh is a new generation serverless event middleware for building distributed event-driven applications.

Self-Hosted API Management for Builders

gRPC to JSON proxy generator following the gRPC HTTP spec