8 Best OpenChat Alternatives in 2026 (Open Source)
OpenChat — LLMs custom-chatbots console ⚡. vs Chatbase/CustomGPT: self-hosted open-source chatbot platform with unlimited memory, codebase ingestion for pair programming, and embeddable website widgets — own your data without SaaS vendor lock-in
Short answer
- Closest match to OpenChat: AnythingLLM.
- Most actively developed: DocsGPT (1,356 commits in the last 90 days).
- Fastest growing: AnythingLLM (+1,548 GitHub stars in the last 30 days).
- No commit in 6+ months: LLMStack, Chaindesk and RAGapp.
These 8 open-source tools do the same job. They are ordered by how closely they match OpenChat, with live GitHub data so you can see which projects are actively maintained.
By package downloads DocsGPT is the most used here (1.2K in the last 30 days), even though AnythingLLM has the most GitHub stars. See all agent tools by downloads.
| Tool | GitHub stars | Stars / 30d | Last commit | Downloads / 30d |
|---|---|---|---|---|
| OpenChat(original) | 5.2k | -5 | 2024-02-27 | — |
| AnythingLLM | 66.7k | +1,548 | 2026-10-02 | — |
| Casibase | 5.7k | +190 | 2026-10-01 | — |
| DocsGPT | 18.3k | +80 | 2026-10-03 | 1.2K |
| LLMStack | 2.3k | +2 | 2024-12-11 | — |
| Chaindesk | 3.0k | +4 | 2024-06-17 | — |
| Hexabot | 1.3k | +55 | 2026-08-20 | — |
| Dialoqbase | 1.8k | +1 | 2026-06-29 | 36 |
| RAGapp | 4.4k | +6 | 2024-11-04 | — |
1. AnythingLLM
The all-in-one AI productivity accelerator. On device and privacy first with no annoying setup or configuration.
What sets it apart: Unlike Open WebUI (chat-only) or RAGFlow (enterprise RAG focus), AnythingLLM is the most complete all-in-one desktop AI app combining RAG, no-code agent builder, MCP compatibility, multi-user support, and embeddable widgets — requiring zero coding to set up a private AI workspace.
Best for: Non-technical users who want a private, all-in-one ChatGPT replacement with document chat and agents; Small teams needing a self-hosted multi-user AI workspace with RAG and agent capabilities
2. Casibase
Open-source AI knowledge base and MCP/A2A management platform with admin UI, user management, and SSO
What sets it apart: vs other knowledge base platforms: Enterprise-grade open-source AI Cloud OS with built-in SSO (Casdoor), admin UI, MCP/A2A agent management, and support for 10+ LLM providers out of the box
Best for: Enterprise teams needing a self-hosted AI knowledge base with admin UI; Organizations requiring SSO and user management for AI chatbots; Multi-model AI platform deployment with MCP/A2A support
3. DocsGPT
Private AI platform for agents, assistants and enterprise search. Built-in Agent Builder, Deep research, Document analysis, Multi-model support, and API connectivity for agents.
Best for: Enterprise teams building private document Q&A systems; Organizations needing on-premise AI deployment with data privacy control; Teams requiring multi-format document ingestion including audio workflows
4. LLMStack
No-code multi-agent framework to build LLM Agents, workflows and applications with your data
What sets it apart: vs Flowise / Dify: no-code AI platform with multi-tenant support, built-in vector DB, and Slack/Discord integration — deploy AI agents from Google Drive/Notion data without writing code
Best for: Non-developers wanting to build AI agents and chatbots without coding; Teams needing multi-LLM chain workflows with data integration; Organizations wanting self-hosted AI platforms with multi-tenant support
5. Chaindesk
The no-code platform for building custom LLM Agents
What sets it apart: vs Botpress/Voiceflow: no-code LLM agent builder with semantic search — evolved into Chaindesk managed platform for production chatbot deployment
Best for: Non-technical users wanting to build LLM-powered chatbots; Quick customer support bot prototyping; Teams evaluating no-code LLM agent platforms
6. Hexabot
Hexabot is an open-source AI chatbot / agent builder. It allows you to create and manage multi-channel and multilingual chatbots / agents with ease.
What sets it apart: vs Botpress/Rasa: open-source visual chatbot builder with built-in multi-LLM support, multi-channel deployment, and knowledge base — complete platform not just a framework
Best for: Teams building multi-channel AI chatbots with visual flow editor; Organizations needing self-hosted chatbot with human handover
7. Dialoqbase
Create chatbots with ease
What sets it apart: vs Botpress/Rasa: open-source no-code chatbot builder with multi-LLM provider flexibility + multi-platform deployment (web, Telegram, Discord, WhatsApp) + PostgreSQL vector search — all self-hosted
Best for: Quickly building custom chatbots from proprietary knowledge bases; Teams wanting multi-platform chatbot deployment (Telegram, Discord, web); Experimenting with different LLM providers for chatbot use cases
8. RAGapp
The easiest way to use Agentic RAG in any enterprise
Best for: Enterprise teams needing self-hosted RAG with simple configuration UI; Organizations with data privacy requirements who can't use cloud AI services; Teams wanting OpenAI custom GPT-like experience on their own infrastructure
FAQ
- What are the best alternatives to OpenChat?
- The closest open-source alternatives to OpenChat are AnythingLLM, Casibase and DocsGPT, followed by LLMStack, Chaindesk and Hexabot. They are ranked by how closely they match what OpenChat does.
- Which OpenChat alternative is the most popular?
- AnythingLLM has the most GitHub stars among OpenChat alternatives, with 66,684 stars.
- Which OpenChat alternative is the most actively maintained?
- By recent activity, DocsGPT (1,356 commits in the last 90 days) is the most actively developed alternative.
Maintain OpenChat or one of these alternatives?
Each tool page has a maintainer box: a README badge with your live rank and stars, or a homepage feature for $49 / 7 days.
OpenChat · AnythingLLM · Casibase · DocsGPT · LLMStack · Chaindesk