Skip to content
O/THE OPEN ALTERNATIVE
↑↓to navigate↵to selectescto close
LangChain

Top Open Source Projects Built With LangChain in 2026

A curated collection of the 16 best free and open-source projects built using LangChain. Discover popular repositories, architecture patterns, and trending software in 2026.

Official Website

  • NocoBase

    Open-source AI + no-code business system builder

    Stars
    23,888
    Last commit
    11d ago
    License
    Open Source

  • Postiz

    All-in-one social media scheduling tool

    Stars
    35,180
    Last commit
    10d ago
    License
    AGPL-3.0

  • Novu

    Open-source platform for building in-app, email, push, SMS, and chat notifications with a unified API, workflow engine, and embeddable inbox component.

    Stars
    39,678
    Last commit
    10d ago
    License
    Open Source

  • Mem0

    AI memory layer for persistent agent context

    Stars
    64,166
    Last commit
    10d ago
    License
    Apache-2.0

  • Lightdash

    Open-source, code-first BI platform for modern data teams

    Stars
    6,094
    Last commit
    10d ago
    License
    Open Source

  • Jarvis

    Free, open-source macOS voice assistant that transcribes speech, applies AI transformations, and controls apps hands-free. No subscription, no training required.

    Stars
    622
    Last commit
    17d ago
    License
    MIT

  • Flowise AI

    Open source platform for building AI agents, chatbots, and multi-agent systems using a drag-and-drop interface, with support for 100+ LLMs and RAG.

    Stars
    55,399
    Last commit
    24d ago
    License
    Open Source

  • Fonoster

    Build and deploy powerful voice and messaging applications with ease using Fonoster's flexible, scalable, and developer-friendly platform.

    Stars
    8,082
    Last commit
    12d ago
    License
    MIT

  • Docmost

    Enterprise-ready on-premise wiki for teams

    Stars
    21,482
    Last commit
    10d ago
    License
    AGPL-3.0

  • Pearl

    Operating system for paid professional communities

    Stars
    1,094
    Last commit
    4mo ago
    License
    Apache-2.0

  • Automatisch

    Open source Zapier alternative

    Stars
    13,948
    Last commit
    7mo ago
    License
    Open Source

  • Arize Phoenix

    Open-source AI agent development platform

    Stars
    11,212
    Last commit
    10d ago
    License
    Open Source

  • AnythingLLM

    Private AI assistant running entirely on your device

    Stars
    65,277
    Last commit
    11d ago
    License
    MIT

  • Anarlog

    Open-source AI notepad for private meetings

    Stars
    9,184
    Last commit
    10d ago
    License
    MIT

  • n8n

    AI-powered workflow automation platform

    Stars
    202,578
    Last commit
    10d ago
    License
    Open Source
Loading more tools...
Showing 15 of 16 open-source tools