Best Open Source tools

Free open-source Claude Code plugin: SEO, AEO, GEO, audits, content plans, schema and link checks.

Open source grammar, spelling and style checker for 30+ languages

Open source LLMOps for building AI apps and agent workflows

Open source observability and gateway for LLM apps, with one-line setup

Open source observability and prompt management for LLM apps

Stateful AI agents with long-term memory, plus a memory-first coding agent

TypeScript framework for building AI agents, workflows and RAG pipelines

An open source base for creating and operating self-directed AI agents

Python framework and platform for teams of cooperating AI agents

Self-hosted ChatGPT-style interface for local and cloud language models

Emotion-aware voice AI and expressive text-to-speech

Open-weight models and EU-hosted AI cloud for developers and businesses

Python toolkit for agents that see, hear and remember, with tools built in

Alibaba's open-source language, vision and image model family

Open AI studio for generating images, music and video, with a free API

One OpenAI-style interface for 100+ LLM providers, with spend tracking

Visual drag-and-drop builder for AI agents and RAG apps

Open source framework to put AI copilots and agents inside your app

Open source browser that lets coding agents use logged-in accounts locally

Model hub, datasets and tools for sharing and building with AI

Emotional, lifelike AI voices with fast voice cloning

Customer engagement suite with free live chat and open source chatbots

Everyday AI helper that reads very long texts

Open source workspace for building and running AI agents visually or in code