Best Open Source LLM Application Frameworks using pnpm in 2026

Dify

AI-powered app creation without coding complexities

Stars
138,774
Forks
21,754
Last commit
13 hours ago

Create, deploy, and manage AI-native apps effortlessly with a user-friendly platform that combines LLMs and your data

Open Source Alternative to:

Glide

Mem0

Give your AI apps persistent memory and intelligence

Stars
53,819
Forks
6,042
Last commit
9 hours ago

Universal memory layer for LLM applications that learns from user interactions, reduces token costs by 80%, and delivers personalized AI experiences.

Open Source Alternative to:

LangChain

CopilotKit

Build AI copilots for your product in hours, not months

Stars
30,380
Forks
3,925
Last commit
9 hours ago

Integrate production-ready AI copilots into any product quickly and easily with CopilotKit's open-source platform.

Open Source Alternative to:

LangChain

FastGPT

Build powerful AI knowledge bases with ease

Stars
27,809
Forks
7,044
Last commit
11 hours ago

FastGPT is a free, open-source platform for creating AI-powered knowledge bases with data processing, model invocation, and visual workflows.

Open Source Alternative to:

Zendesk

Langfuse

Open source LLM engineering platform for AI-powered applications

Stars
25,491
Forks
2,587
Last commit
10 hours ago

Langfuse provides tracing, evaluations, prompt management, and analytics to debug and improve LLM applications.

Open Source Alternative to:

LangChain

Arize Phoenix

Open-source LLM tracing & evaluation for AI optimization

Stars
9,385
Forks
834
Last commit
9 hours ago

Open-source platform for LLM tracing, evaluation, and optimization. Features automatic instrumentation, prompt playground, and real-time AI application monitoring.

Open Source Alternative to:

LangChain

Laminar

AI-powered platform for engineering LLM products

Stars
2,798
Forks
190
Last commit
9 hours ago

Laminar is an open-source platform that helps collect, understand, and utilize data for building high-quality LLM applications.

Open Source Alternative to:

LangChain

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Dify

AI-powered app creation without coding complexities

Stars
138,774
Forks
21,754
Last commit
13 hours ago

Create, deploy, and manage AI-native apps effortlessly with a user-friendly platform that combines LLMs and your data

Open Source Alternative to:

Glide

Mem0

Give your AI apps persistent memory and intelligence

Stars
53,819
Forks
6,042
Last commit
9 hours ago

Universal memory layer for LLM applications that learns from user interactions, reduces token costs by 80%, and delivers personalized AI experiences.

Open Source Alternative to:

LangChain

CopilotKit

Build AI copilots for your product in hours, not months

Stars
30,380
Forks
3,925
Last commit
9 hours ago

Integrate production-ready AI copilots into any product quickly and easily with CopilotKit's open-source platform.

Open Source Alternative to:

LangChain

FastGPT

Build powerful AI knowledge bases with ease

Stars
27,809
Forks
7,044
Last commit
11 hours ago

FastGPT is a free, open-source platform for creating AI-powered knowledge bases with data processing, model invocation, and visual workflows.

Open Source Alternative to:

Zendesk

Langfuse

Open source LLM engineering platform for AI-powered applications

Stars
25,491
Forks
2,587
Last commit
10 hours ago

Langfuse provides tracing, evaluations, prompt management, and analytics to debug and improve LLM applications.

Open Source Alternative to:

LangChain

Arize Phoenix

Open-source LLM tracing & evaluation for AI optimization

Stars
9,385
Forks
834
Last commit
9 hours ago

Open-source platform for LLM tracing, evaluation, and optimization. Features automatic instrumentation, prompt playground, and real-time AI application monitoring.

Open Source Alternative to:

LangChain

Laminar

AI-powered platform for engineering LLM products

Stars
2,798
Forks
190
Last commit
9 hours ago

Laminar is an open-source platform that helps collect, understand, and utilize data for building high-quality LLM applications.

Open Source Alternative to:

LangChain

Open Source LLM Application Frameworks using pnpm

A curated collection of the best open source frameworks specifically for building applications using Large Language Models. using pnpm.