Langchain GitHub Repositories (2026) · Open Source Tools

Ridiculous speed. Readable code.

Open Source AI Tracing Framework built on Opentelemetry for AI Applications and Frameworks

LLPhant - A comprehensive PHP Generative AI Framework using OpenAI GPT 4. Inspired by Langchain

Pure Rust PDF library for AI/RAG: structure-aware chunking, no ML, no C deps.

Neuro AI System of Agent Networks

Open-source, AI-native social media management, design & scheduling platform for 45+ channels. BYOK AI across 30+ providers with governance guardrails & spend caps, AI Designer + 46 media tools, persisted analytics, cross-channel comment inbox, campaigns, RBAC teams, public API & SDK. Self-hosted: Next.js + NestJS + PostgreSQL, jobs on Inngest.

The AI-Native Search Database. Best for agent storage, it unifies vector, text, structured, and semi-structured data into a single engine. This all-in-one database makes agents smarter, easier to run, and more stable.

A cognition aware database engine for AI agent memory. Purpose built in Rust with WAL, HNSW, knowledge graphs, and speculative context pre assembly. Not a wrapper, a ground up storage engine that thinks.

Quarkus LangChain4J Workshop that demonstrates both single AI service capabilities and Agentic AI orchestration

Magic Resume is an open-source AI resume workbench: the AI proposes edits in place and you accept or skip each one. MIT-licensed core, 19 templates, six modes, cloud sync.

🦜🔗 LangChain interfaces to Google's suite of AI products (e.g. Gemini & Vertex AI)

Next-generation AI Agent Optimization Platform: Cozeloop addresses challenges in AI agent development by providing full-lifecycle management capabilities from development, debugging, and evaluation to monitoring.