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Open source tools

33 AI tools, MCP servers and skills tagged Open source, with pricing and what each one does.

LangChainFree plan

AI agents

An open agent engineering platform: frameworks plus tracing and evaluation.
DifyOpen source + hosted

AI agents

Build agents, knowledge pipelines and tools on one canvas; cloud or self-hosted.
FlowiseOpen source + hosted

AI agents

Open-source platform for building AI agents and LLM flows visually.
Browser UseFree plan

AI agents

Remote browsers and agents that complete web tasks for AI apps.
LangflowOpen source

AI agents

A low-code, open-source builder for agents and RAG apps.
n8nOpen source + hosted

AI automation

Workflow automation that mixes AI steps with code and business processes.
Gemini CLIOpen source

AI tools for coding

Google’s open-source AI agent that brings Gemini into your terminal.
AiderOpen source

AI tools for coding

AI pair programming in your terminal.
ClineOpen source

AI tools for coding

Open-source coding agent with Plan/Act modes and MCP support.
ZedFree plan

AI tools for coding

A high-performance, multiplayer code editor with AI built in.
OpenCodeOpen source

AI tools for coding

The open-source AI coding agent, with free models included.
AI SDKOpen source

LLM APIs and platforms

Vercel’s open-source TypeScript SDK for building AI apps across models.
UpscaylOpen source

AI photo editing

A free, open-source AI image upscaler for Linux, macOS and Windows.
ExcalidrawOpen source

Whiteboards and diagrams

A collaborative whiteboard for hand-drawn style diagrams.
LogseqOpen source

Notes and docs

A privacy-first, open-source knowledge base and outliner.
PenpotOpen source + hosted

Design software

The open-source design platform for teams building digital products.
BlenderOpen source

Design software

Free and open-source 3D creation software.
Visual Studio CodeFree

Developer tools

Microsoft’s free, open-source code editor with built-in AI agents.
BitwardenFree plan

Privacy and security

An open-source password manager for individuals, teams and enterprises.
SquooshOpen source

File and media utilities

Compress and compare images with different codecs in the browser.
OBS StudioOpen source

File and media utilities

Free and open-source software for video recording and live streaming.
HandBrakeOpen source

File and media utilities

An open-source, multiplatform video transcoder.
VLC media playerOpen source

File and media utilities

A free, open-source cross-platform media player.
7-ZipOpen source

File and media utilities

Free, open-source file archiver with high compression.
MCP reference serversOpen source

Developer MCP servers

The official reference MCP servers: Everything, Fetch, Filesystem, Git, Memory, Sequential Thinking and Time.
AWS MCP ServersOpen source

Cloud and infrastructure MCP servers

Open-source MCP servers for AWS from AWS Labs.
Microsoft MCPOpen source

Cloud and infrastructure MCP servers

A catalog of official Microsoft MCP server implementations.
SerenaOpen source

Developer MCP servers

An MCP toolkit for coding with semantic retrieval and editing.
Hugging Face MCP ServerOpen source + hosted

Developer MCP servers

Connect your assistant to the Hugging Face Hub, Spaces and papers.
Skill creatorOpen source

Development skills

Create, improve and measure agent skills.
SuperpowersOpen source

Development skills

A software development methodology for coding agents, built from composable skills.
Anthropic skills repositoryOpen source

Skill directories and standards

Anthropic’s public repository of Agent Skills, with a spec and a template.

AI tool categories

Related pages