LLM apps

Open-source LLM apps and frameworks

This is the broadest group: chat interfaces, SDKs and frameworks, prompt and evaluation tools, and applications built on large language models. Many work with models from several providers, and some can run models on your own hardware.

How to choose

For anything you plan to ship, check three facts first: the licence, because some popular projects restrict commercial use; whether it supports the model provider you already use; and whether it is still maintained. The At a glance box on every project page answers the licence and maintenance questions from GitHub data.

Most-starred projects

505–528 of 4,628

SWE-agent

mini-swe-agent

★ 7,717

The 100 line AI agent that solves GitHub issues or helps you in your command line. Radically simple, no huge configs, no giant monorepo—but scores >74% on SWE-bench verified!

Python

steel-dev

steel-browser

★ 7,713

🔥 Open Source Browser API for AI Agents & Apps. Steel Browser is a batteries-included browser sandbox that lets you automate the web without worrying about infrastructure.

TypeScript

tailcallhq

forgecode

★ 7,636

AI enabled pair programmer for Claude, GPT, O Series, Grok, Deepseek, Gemini and 300+ models

Rust

microsoft

TinyTroupe

★ 7,572

LLM-powered multiagent persona simulation for imagination enhancement and business insights.

Jupyter Notebook

flyteorg

flyte

★ 7,567

Dynamic, resilient AI orchestration. Coordinate data, models, and compute as you build AI workflows.

HenryNdubuaku

maths-cs-ai-compendium

★ 7,563

Become a cracked AI/ML researcher/engineer with this unconventional textbook covering maths, computing, and ML with intuition.

TypeScript

di-sukharev

opencommit

★ 7,544

top #1 and most feature rich GPT wrapper for git — generate commit messages with an LLM in 1 sec — works with Claude, GPT and every other provider, supports local Ollama models too

JavaScript

mnfst

llm-gateway

★ 7,543

Connect Your Agents And Harnesses With Any Provider 🦚

TypeScript

ed-donner

llm_engineering

★ 7,541

Repo to accompany my mastering LLM engineering course

Jupyter Notebook

anthropics

defending-code-reference-harness

★ 7,538

Skills for threat modeling, scanning, triage, patching, plus an autonomous scanning harness you can /customize

Python

firecrawl

firecrawl-mcp-server

★ 7,534

🔥 Official Firecrawl MCP Server - Adds powerful web scraping and search to Cursor, Claude and any other LLM clients.

JavaScript

refly-ai

refly

★ 7,522

The first open-source agent skills builder. Define skills by vibe workflow, run on Claude Code, Cursor, Codex & more. Build Clawdbot 🦞· APIs for Lovable · Bots for Slack & Lark/Feishu · Skills are infrastructure, not prompts.

TypeScript

LuckyOne7777

LLM-Trading-Lab

★ 7,504

This repo powers my experiment where ChatGPT manages a real-money micro-cap stock portfolio.

Python

experientiallabs

experiential

★ 7,490

Experiential is the open source, zero markup gateway for BYOK, self-hosted and 1000+ marketplace models. It learns from your traffic to cut costs, recommend better models, and train a specialized model you own.

Python

guardrails-ai

guardrails

★ 7,472

Adding guardrails to large language models.

Python

TheCraigHewitt

seomachine

★ 7,467

A specialized Claude Code workspace for creating long-form, SEO-optimized blog content for any business. This system helps you research, write, analyze, and optimize content that ranks well and serves your target audience.

Python

EleutherAI

gpt-neox

★ 7,465

An implementation of model parallel autoregressive transformers on GPUs, based on the Megatron and DeepSpeed libraries

Python

algorithmicsuperintelligence

openevolve

★ 7,460

Open-source implementation of AlphaEvolve

Python

open-compass

opencompass

★ 7,450

OpenCompass is an LLM evaluation platform, supporting a wide range of models (Llama3, Mistral, InternLM2,GPT-4,LLaMa2, Qwen,GLM, Claude, etc) over 100+ datasets.

Python