Top Open Source Projects using LangChain
A curated collection of the 15 best free and open-source projects built using LangChain. Discover popular repositories, architecture patterns, and trending software in 2026.
NocoBase
NOASSERTIONOpen-source no-code platform for creating tailored business applications quickly, with full customization and easy deployment options.
Postiz
AGPL-3.0Self-hostable social media scheduler that lets you plan, generate, and publish content across 30+ networks with AI assistance, team collaboration, and automation integrations.
Novu
NOASSERTIONOpen-source platform for building in-app, email, push, SMS, and chat notifications with a unified API, workflow engine, and embeddable inbox component.
Mem0
Apache-2.0Adds persistent, searchable memory to AI agents and apps, so they remember user preferences and past interactions across sessions without pipeline changes.
Lightdash
NOASSERTIONSelf-serve analytics platform that transforms dbt models into interactive dashboards, enabling data-driven decisions across organizations.
Jarvis
MITFree, open-source macOS voice assistant that transcribes speech, applies AI transformations, and controls apps hands-free. No subscription, no training required.
Flowise AI
NOASSERTIONOpen source platform for building AI agents, chatbots, and multi-agent systems using a drag-and-drop interface, with support for 100+ LLMs and RAG.
Fonoster
MITBuild and deploy powerful voice and messaging applications with ease using Fonoster's flexible, scalable, and developer-friendly platform.
Docmost
AGPL-3.0Self-hosted wiki platform for enterprise teams with real-time collaboration, built-in AI, SSO, RBAC permissions, and compliance support for ITAR, FedRAMP, and GDPR.
Pearl
Apache-2.0Connect all your apps through Pearl, an AI assistant that automates workflows directly in Slack. No coding required - save 10+ hours weekly with intelligent task automation.
Automatisch
NOASSERTIONSelf-hosted automation tool that connects your apps and services, enabling powerful integrations and efficient data flow across your ecosystem.
Arize Phoenix
NOASSERTIONOpen-source platform for LLM tracing, evaluation, and optimization. Features automatic instrumentation, prompt playground, and real-time AI application monitoring.
AnythingLLM
MITA desktop and self-hostable AI app for chatting with documents, running local LLMs, and using AI agents without writing code or creating an account.
Anarlog
MITRecords system audio without joining your call, then turns rough notes into editable summaries. Audio, transcripts, and notes stay as local files.
n8n
NOASSERTIONBuild automated workflows connecting 500+ apps, write custom code, and deploy AI agents with full visibility into every decision. Self-hostable or cloud.