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Best LLM Chat Tools

LLM chat tools are the front door to modern AI — from general assistants to specialist chat UIs. Scan ranked options here, then open the compare page for a compact decision table.

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1,995 tools · sorted by quality

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harness-optimizer

Optimize LLM agent harnesses through tunable Formulas to dynamically enhance the agent, and improve those Formulas with optimizers based on...

Score 88 GitHub stars 44 Open source
proton-mail-bridge-client

Local-first Proton Mail MCP server and CLI via Proton Bridge. Search, draft, send and organize mail from Claude Desktop, Claude Code or any...

Score 88 GitHub stars 44 Open source
llm-firewall

AI Firewall & LLM security toolkit - protect your AI applications from prompt injection, jailbreaks, PII leakage, and adversarial attacks

Score 88 GitHub stars 43 Open source
ai

A Go toolkit for building AI agents and applications across multiple providers. Unified LLM client, agent framework with handoffs, tool call...

Score 88 GitHub stars 43 Open source
miniforge

miniforge is an autonomous software development system designed to behave like a factory, not a chatbot

Score 88 GitHub stars 43 Open source
Anthropic

C# SDK for the Anthropic API -- Claude chat completions, tool calling, and vision

Score 88 GitHub stars 43 Open source
faf-cli

The context every AI coding agent reads — authors AGENTS.md, CLAUDE.md, GEMINI.md & .cursorrules from your repo's real stack. IANA-registere...

Score 88 GitHub stars 42 Open source
logdetective

Analyze logs using Language Model (LLM) and Drain template miner.

Score 88 GitHub stars 42 Open source
skills

Curated, trusted open catalog of AI agent skills for OpenClaw, Claude Code, Codex, GitHub Copilot, Gemini, Cursor, MCP, LangChain, and more....

Score 88 GitHub stars 42 Open source
graflow

Composable Python framework for LLM agent workflows focused on simplicity and developer experience. We ❤️ OSS.

Score 88 GitHub stars 41 Open source
mcp-browser-agent

A Model Context Protocol (MCP) integration that provides Claude Desktop with autonomous browser automation capabilities. This agent enables...

Score 88 GitHub stars 41 Open source
imp

An LLM server for a single RTX 5090, built for agent workloads: tool calls, long conversations, reasoning, and many requests at once. One of...

Score 88 GitHub stars 41 Open source
meta-automation

Autonomous AI Lead Generation, Social Discovery & Smart Conversational Growth Agent for Threads & Instagram. Multi-platform with native brow...

Score 88 GitHub stars 41 Open source
loquix

A framework-agnostic UI kit of production-ready components for building AI and LLM chat interfaces.

Score 88 GitHub stars 41 Open source
daidocs

Open plain-text file format for AI memory. Your assistant's long-term memory as .dai files on your disk: readable by Claude, GPT, Gemini, Cu...

Score 88 GitHub stars 41 Open source
sansheng-distill

Claude Code skill: distill a book or video series into one interactive single-file HTML · 书籍/视频深度蒸馏

Score 88 GitHub stars 41 Open source
models

Community-maintained registry of AI/LLM model configurations - pricing, features, and limits across 19 providers and 1000+ models

Score 88 GitHub stars 41 Open source
aibadger

AI Badger - Local-first tool that extracts focused repo context for any AI chat (Claude, ChatGPT, Grok, etc.) without wasting tokens on irre...

Score 88 GitHub stars 41 Open source
lattice

Run, quantize, and fine-tune LLMs on Apple Silicon. Pure Rust, no Python, no CUDA, no ONNX

Score 88 GitHub stars 41 Open source
agentrium

A Modern Multi-Instance Terminal Manager for Claude Code

Score 88 GitHub stars 41 Open source
civic-ai-tools

Open-source platform connecting AI assistants to government open data — MCP server, curated civic MCP directory, and anti-hallucination fram...

Score 88 GitHub stars 41 Open source
awesome-ai-agent-governance

The curated list of tools, standards, and resources for governing AI agents in production: policy enforcement, audit trails, EU AI Act compl...

Score 88 GitHub stars 41 Open source
claude-chat-mobile

Self-hosted mobile web chat UI for Claude Code — drive your real local claude CLI from your phone. Same CLAUDE.md, MCP, skills, login; any g...

Score 88 GitHub stars 40 Open source
awesome-ai-built-games

A curated list of vibe-coded games: playable games built with AI coding agents like Claude Code, Cursor, Codex, Gemini and Grok, with Three....

Score 88 GitHub stars 40 Open source
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