lucinate-ai/lucinate
Terminal-native AI chat client supporting OpenClaw, Hermes, Ollama, and any OpenAI-compatible backend — with routines, multi-agent switching, and local agent skills, all in the TUI. Apache-2.0 licensed.
envoyproxy/ai-gateway
Manages unified access to generative AI services built on Envoy Gateway. Kubernetes-native AI gateway for routing, load balancing, and managing LLM traffic with enterprise-grade reliability. Apache 2.0 licensed.
tashfeenahmed/freellmapi
OpenAI-compatible proxy gateway that stacks the free tiers of multiple LLM providers behind a single endpoint with automatic failover and rate tracking. MIT licensed.
ggml-org/llama.cpp
Pure C/C++ inference engine with GGUF format support. The gold standard for CPU/GPU/Apple Silicon on-device running. Includes llama-server for OpenAI-compatible API. Now at 100K+ stars.
theroyallab/tabbyAPI
FastAPI-based API server for ExLlamaV2/V3 backends. OpenAI-compatible API with support for model loading/unloading, embeddings, speculative decoding, multi-LoRA, and streaming.
bentoml/OpenLLM
Production-grade platform for running any open-source LLMs as OpenAI-compatible API endpoints. Supports 50+ models with built-in streaming, batching, and auto-acceleration. Apache 2.0 licensed.
shihabshahrier/freelm
Python and TypeScript client library, with an optional local OpenAI-compatible server, that pools the free tiers of Gemini, Groq, OpenRouter, Cloudflare Workers AI and other providers with key rotation and failover. MIT licensed.
lm-sys/FastChat
Open platform for training, serving, and evaluating large language model chatbots. Powers Chatbot Arena (lmarena.ai) serving 10M+ requests for 70+ LLMs. Includes training code for Vicuna, MT-Bench evaluation, and distributed multi-model serving with OpenAI-compatible APIs. Apache 2.0 licensed.
huggingface/chat-ui
Official open-source codebase for HuggingChat.
airouter-dev/openai-compatible-api-smoke-test
MIT-licensed, standard-library-only Go CLI that validates `/models` and opt-in `/chat/completions` behavior for OpenAI-compatible APIs and emits bounded diagnostics without credentials or response bodies.
shyringo/qwen3.8-flash-next-in-c
Native C implementation of Qwen3.8-Flash-Next for local CPU inference, with terminal chat, a resident OpenAI-compatible API, and reproducible benchmarks.
maximhq/bifrost
LLM gateway with a unified OpenAI-compatible API across providers, routing, load balancing, fallbacks, guardrails, and observability. Apache 2.0 licensed.
xorbitsai/inference
Unified, production-ready inference API for LLMs, speech, and multimodal models. Drop-in GPT replacement with single-line code changes. Supports thousands of models with auto-batching and distributed inference.
abetlen/llama-cpp-python
Official Python bindings for llama.cpp.
jundot/omlx
Apple-centric inference server for local-first AI workflows with model management, GPU orchestration, and OpenAI-compatible APIs for self-hosted deployment. Apache 2.0 licensed.
api7/aisix
Self-hosted Apache-2.0-licensed AI gateway written in Rust, with OpenAI-compatible endpoints, an Anthropic-compatible Messages endpoint, model routing, traffic policies, Prometheus metrics, and OTLP trace export.
mostlygeek/llama-swap
Intelligent model swapping proxy for llama.cpp. Enables seamless hot-swapping between different GGUF models without restarting the server, with automatic model loading/unloading and OpenAI-compatible API. MIT licensed.
mlc-ai/mlc-llm
Deployment engine that compiles and runs LLMs across browsers, mobile devices, and local hardware.
eulogik/fugusashi
Open-source intelligent model router with CMA-ES evolved routing weights, federated learning for privacy-preserving collaborative routing, and human-interpretable explanations for every decision. OpenAI-compatible API with web dashboard. MIT licensed.
open-webui/open-webui
Most popular self-hosted ChatGPT-style interface.
EverMind-AI/Raven
Multi-agent harness whose host agent plans complex tasks as DAGs and delegates them to built-in research, coding, design, and on-call agents or to third-party agents over ACP, CLI, or OpenAI-compatible APIs, with cross-session memory and an experimental self-evolution loop that installs only verified changes. Apache 2.0 licensed.
janhq/jan
Local-first AI app framework.
Nano-Collective/nanocoder
Beautiful local-first coding agent running in your terminal. Built for privacy and control with support for multiple AI providers via OpenRouter.
vllm-project/vllm-omni
Multi-modal inference stack extending vLLM for image, audio, and video generation workloads with a unified serving interface. Apache 2.0 licensed.