Open Source Alternatives
Open source alternatives to SGLang
Open source alternatives to SGLang, ranked by GitHub stars and freshness.
13 open-source alternatives in the index, ranked by GitHub stars and freshness.
llama.cpp
Community
LLM inference in C/C++
Alternative to Vllm, Sglang, Tensorrt Llm +2 more
Best for: Developers building privacy-first or offline-capable applications with constrained hardware
vLLM
Community
A high-throughput and memory-efficient inference and serving engine for LLMs
Alternative to Tensorrt Llm, Lmdeploy, Sglang +1 more
Best for: Teams building production LLM APIs and services that need to maximize throughput and minimize latency under concurrent load.
FastChat
Community
An open platform for training, serving, and evaluating large language models. Release repo for Vicuna and Chatbot Arena.
Alternative to Vllm, Sglang, Lmdeploy
Best for: Researchers and ML engineers building custom LLM applications who need training, serving, and evaluation in one framework.
TensorRT-LLM
Community
TensorRT LLM provides users with an easy-to-use Python API to define Large Language Models (LLMs) and supports state-of-the-art optimizations to perform inference efficiently on NV
Alternative to Vllm, Lmdeploy, Sglang
Best for: Teams deploying LLMs at scale on NVIDIA infrastructure who need maximum inference performance.
OpenLLM
Community
Run any open-source LLMs, such as DeepSeek and Llama, as OpenAI compatible API endpoint in the cloud.
Alternative to Vllm, Sglang, Lmdeploy
Best for: Developers who need to serve open-source LLMs with OpenAI API compatibility
LMDeploy
Community
LMDeploy is a toolkit for compressing, deploying, and serving LLMs.
Alternative to Vllm, Sglang, Tensorrt Llm +2 more
Best for: Developers who need to compress and serve LLMs efficiently in production
mistral.rs
Community
Fast, flexible LLM inference
Alternative to Llama Cpp, Vllm, Sglang +2 more
Best for: Rust developers seeking a fast, flexible LLM inference framework for performance-critical or resource-constrained environments.
Text-Embeddings-Inference
Community
A blazing fast inference solution for text embeddings models
Alternative to Vllm, Sglang
Best for: Developers who need fast, scalable embedding serving for search or NLP pipelines
Infinity
Community
Infinity is a high-throughput, low-latency serving engine for text-embeddings, reranking models, clip, clap and colpali
Alternative to Vllm, Sglang
Best for: Developers needing a fast, scalable open-source serving layer for embedding and reranking models in production.
ray-llm
Community
RayLLM - LLMs on Ray (Archived). Read README for more info.
Alternative to Vllm, Fastchat, Sglang
Best for: Developers already using Ray who need legacy code or patterns for running LLMs at scale.
MInference
Community
[NeurIPS'24 Spotlight, ICLR'25, ICML'25] To speed up Long-context LLMs' inference, approximate and dynamic sparse calculate the attention, which reduces inference latency by up to
Alternative to Vllm, Sglang, Tensorrt Llm +1 more
Best for: Developers optimizing long-context LLM inference on NVIDIA GPUs
LMQL
Community
Language Model Query Language
Alternative to Guidance, Outlines, Sglang
Best for: Developers seeking precise programmatic control over LLM outputs and complex prompt logic
TGI
Community
We’re on a journey to advance and democratize artificial intelligence through open source and open science.
Alternative to Vllm, Sglang
Best for: Developers and teams who need to self-host or fine-tune open-source LLMs at scale