Best Chatbots Open Source Tools in 2026

Open Source Alternatives

Alternatives Blog Advertise

Open Source Alternatives

DeepTutor

stars 39Kforks 4.9K

Agentic framework for lifelong personalized tutoring

AI Agents Chatbots Knowledge Management+2

transformers

stars 164.9Kforks 34.5K

Model-definition framework for state-of-the-art ML

LLM AI Coding Assistant Chatbots+1

page-agent

stars 29Kforks 2.6K

AI-powered GUI Agent for your website

AI Agents Customer Support Workflow Automation+2

LMCache

stars 11.7Kforks 1.9K

Accelerate AI applications with caching technology

LLM Knowledge Management Developer Tools+2

supertonic

stars 13.8Kforks 1.5K

Instantly convert text to speech with customizable options

AI Coding Assistant Chatbots Customer Support+1

Flue Framework

stars 8.1Kforks 477

Build powerful, autonomous agents with TypeScript.

AI Agents Chatbots Developer Tools+2

discli

stars 32forks 9

CLI for building AI agents and automating Discord servers

CLI AI Agents Workflow Automation+3

Kollect Voice Agent

stars 10forks 1

Run real-time voice surveys with AI analysis and reporting

AI Agents User Feedback Management Chatbots+2

Hume AI

stars 81forks 23

Empathic voice AI SDK with open source emotional models

AI SDK LLM API Infrastructure+3

Jan

stars 44.4Kforks 3K

Run open source LLMs on your own hardware with no cloud required

LLM Self Hosted LLMOps+3

AnythingLLM

stars 65.7Kforks 7.3K

Chat with your documents using any LLM, private and self-hosted

AI Agents Self Hosted LLM+5

Open WebUI

stars 151.1Kforks 22.1K

Chat interface for Ollama and any OpenAI API, with RAG support

LLM RAG Self Hosted+3