Open Source

Activepieces

Activepieces

AI-first automation platform for business teams — visual flow builder, 754+ integrations, cloud or self-hosted.

Activepieces MCP

Activepieces

280+ open-source MCP servers hosted on Activepieces, letting Claude, Cursor, and Windsurf read email, manage calendars, and take actions across your apps without code.

AFFiNE AI

AFFiNE

Open-source, local-first workspace that merges docs, whiteboards, and databases into a single canvas with built-in AI assistance.

aider

Aider

AI pair programming in your terminal — maps your entire codebase so LLMs can understand context and commit changes directly to git.

Airbyte

Airbyte

Open-source ELT platform with 600+ connectors for moving data from any source into your warehouse, lakehouse, or AI agent's context layer.

AppFlowy

AppFlowy

Open-source collaborative workspace combining project management, docs, and wikis with full data control and optional self-hosting.

Appsmith

AppSmith

Open-source low-code platform for building internal tools, admin panels, and dashboards by connecting to your existing databases and APIs.

Appwrite

AppWrite

Open-source backend platform — auth, database, storage, functions, and messaging through a single self-hostable API layer.

Automatisch

Automatisch

Open-source workflow automation that connects 80+ apps. Self-host for unlimited executions, or use their hosted cloud from €20/month (task-metered).

Baserow

Baserow

Open-source no-code database platform with relational tables, multiple views, built-in automations, AI fields, and a self-hosting option that keeps your data on your servers.

Budibase

Budibase

Open-source low-code platform for building internal tools, AI agents, and automations — admin panels, dashboards, and approval workflows — with drag-and-drop UI and extensive data source connectors.

Cal.com

Cal.com, Inc

Open-source scheduling infrastructure for individuals, teams, and developers who want full control over their booking experience.

Dify

LangGenius

Open-source platform for building production-ready AI agents and agentic workflows visually, with built-in RAG pipelines, multi-model routing, and backend APIs.

directus

Monospace Inc

Collaborative backend platform that wraps any SQL database with instant REST/GraphQL APIs, a no-code admin Studio, and a native MCP server for AI agents.

FlowiseAI

FlowiseAI

Open-source, low-code platform for building LLM apps, AI agents, and chatbots through a visual drag-and-drop flow editor.

Gemini CLI

Google

Open-source AI agent from Google that runs Gemini models directly in your terminal for natural language commands, code generation, and file operations.

Goose

Block, Inc.

Open-source general-purpose AI agent (originally from Block, now stewarded by the Agentic AI Foundation) that runs on your machine via desktop app or CLI, executes tasks autonomously, and connects to tools via MCP.

Grist

Grist Labs

A relational spreadsheet-database hybrid that lets you link tables, build custom views, and control access — without leaving the spreadsheet paradigm.

Huly

Huly

Open-source all-in-one workspace replacing Linear, Jira, Slack, and Notion for teams that want fewer subscriptions and less context switching.

Kestra

Kestra (Kestra SAS)

Open-source declarative workflow orchestration — YAML-defined pipelines with 1,600+ integrations, visual DAGs, and event-based triggers.

Langflow

Langflow

Low-code visual builder for agentic and RAG applications, connecting LLMs, vector databases, and custom components through a drag-and-drop interface.

Langfuse

Langfuse

Open-source AI engineering platform for tracing AI agents and LLM apps: observability, evals, prompt management, and cost analytics from prototype to production.

LobeChat

LobeHub

Open-source multi-agent platform for building, scheduling, and running AI agent teams across 73K+ MCP integrations — with a hosted cloud tier and full self-host option.

Apache NiFi

Open-source data-flow tool with a browser canvas for moving, routing, and transforming data between systems in real time, with full lineage tracking.

Archon

Open-source workflow engine that turns your dev process into repeatable YAML pipelines an AI coding agent runs the same way every time.

CLI-Anything

HKUDS

Open-source plugin that auto-generates a command-line interface for any software so AI agents can drive it without screenshots or brittle UI clicks.

Codebase to Course

A Claude Code skill that turns any repo into a single-page interactive course built for vibe coders who didn't write the code.

n8n-as-code

Etienne Lescot

Gives AI coding agents the full n8n ontology — 537 nodes with schemas, 7,700+ templates, GitOps sync, and TypeScript workflows.

UI UX Pro Max

NextLevelBuilder.io

An AI skill that gives coding agents a curated design knowledge base — 161 industry rulebooks, 67 styles, and 161 palettes — so the UI it ships looks intentional.

Anton

MindsDB Inc.

Open-source AI agent that takes whole tasks off your plate — clear an inbox, pull a report, build an integration — across any model you point it at.

CopilotKit

Open-source framework for building in-app AI copilots with generative UI, and home of the AG-UI protocol. A developer tool, not an operator one.

MCP-UI

Open-source SDK that lets MCP servers return interactive UI, not just text. The developer plumbing behind the richer widgets showing up in AI chat apps.

xyOps

Open-source, self-hosted job-orchestration and workflow automation — visual pipelines, fleet monitoring, smart alerts, and built-in ticketing.

Mastra.ai

Mastra AI, Inc.

TypeScript-first framework for building AI agents and workflows with built-in MCP support, data connectors, and real-time monitoring.

Mattermost

Mattermost, Inc.

Self-hostable team messaging and workflow platform built for secure, sovereign deployment in regulated and mission-critical environments.

Mem0

Mem0

A self-improving memory layer for AI apps that persists context across sessions, retrieves relevant history at inference time, and cuts token costs.

NocoBase

NocoBase

Open-source, self-hosted AI + no-code platform for building business systems — with built-in AI employees, a plugin-based architecture, and a buy-once licensing model.

Node-RED

OpenJS Foundation

Open-source visual flow editor for wiring together hardware devices, APIs, and online services with drag-and-drop nodes.

Nordcraft (formerly Toddle.dev)

Toddle

Open-source visual website builder with a built-in AI agent — Git-style branching, SSR, and unlimited collaborators for free.

Penpot

Kaleidos Open Source S.L.

Open-source design and prototyping tool that runs in the browser, works across OS, and outputs CSS/SVG so developers can inspect real code from the design file.

Plane

Makeplane Technologies Inc.

Open-source project management with issue tracking, sprints, and roadmaps — self-hostable (including air-gapped) for teams who want full data control.

PocketBase

PocketBase

Open-source backend in a single executable: SQLite database, auth, file storage, and admin UI — download and run.

Refine

Refine

Open-source React framework for building admin panels and internal tools — plus Refine AI, a hosted app-generation layer that scaffolds production React apps from your existing API.

Rowy

Rowy Inc

Open-source spreadsheet interface for Firestore with a low-code Cloud Functions editor — Firebase backend management without the boilerplate.

Sim

Sim Studio

Open-source AI workspace for building, deploying, and managing AI agents — visual workflow builder, chat interface, and API with 1,000+ integrations and SOC2-compliant infrastructure.

Strapi

Strapi Solutions SAS

Open-source headless CMS that generates REST and GraphQL APIs from a visual content model — self-host or use Strapi Cloud.

Supabase

Supabase

Open-source backend platform built on Postgres — database, auth, auto-generated APIs, realtime, storage, and vector search in one place.

teable

teable

Open-source no-code database built on Postgres — Airtable's interface with real relational power underneath.

ToolJet

ToolJet

Open-source platform for building internal tools, admin panels, and dashboards with a drag-and-drop UI and 80+ native data source connectors.

Twenty

Twenty

Open-source CRM built for teams that want full data ownership and a customizable data model without paying Salesforce prices.

Unsloth

Unsloth

Open-source LLM fine-tuning framework that cuts training time and memory usage dramatically, so you can customize models on consumer hardware.

Weaviate

Weaviate

An open-source AI-native vector database for building semantic search, RAG pipelines, and recommendation systems that retrieve by meaning, not just keyword.

Webstudio

Webstudio

Open-source visual website builder that gives designers full HTML/CSS control without writing code, with clean export and self-hosting options.

Windmill.dev

Windmill

Open-source workflow engine that turns Python and TypeScript scripts into internal apps, REST APIs, and scheduled jobs without the infrastructure overhead.

Wordpress

Automattic

Open-source CMS powering a large share of the web — build anything from a simple blog to a full e-commerce store without writing code.