Free / Open-sourceFunctions primarily as a lightweight CLI runtime for local models rather than a full-featured chat interface.
#1DHTMLX Chatbot records 52,781 monthly visits with -19.2% month-over-month growth and Free pricing. Open WebUI records 804,534 monthly visits with -2.8% growth and Freemium pricing.

MIT-licensed JavaScript widget for AI support chat
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | dhtmlx.com | openwebui.com |
| Pricing Model | Free | Freemium |
| Monthly Visits | 52.78K (52,781) | 804.53K (804,534) |
| MoM Traffic Delta |
|---|
| -12.51K (-19.2%) |
| -23.01K (-2.8%) |
| Primary Market & Share | 🇺🇸 United States (11.6%) | 🇺🇸 United States (24.5%) |
|---|
| Direct Visits / mo | 27.3K | 299.84K |
|---|
| User Rating | 4.3 | 4.4 |
|---|
| Supported Platforms | Website | Website |
|---|

MIT-licensed JavaScript widget for AI support chat
Display messages as blocks, bubbles, cards, or flow, letting the chat match the surrounding product design.
Connect the interface to ChatGPT, Claude, Gemini, or any other model through your own server logic.
Render formatted model output and stream responses with a configurable typing speed for a natural feel.
Show a sidebar of conversations with different agents and step back through previous exchanges.

Self-hosted AI workspace for local and cloud models
Connect local runtimes like Ollama alongside OpenAI-compatible and Anthropic APIs, and switch between them inside one interface.
RAG over your own documents, web search and citation-aware answers come standard, so responses are grounded in real sources.
Extend the platform with Python code to add custom tooling, preprocessing, and multi-step pipelines, then share them with others.
SSO, RBAC, audit logs, data residency, and on-premises, hybrid or air-gapped deployment for organisations with strict requirements.
Free / Open-sourceFunctions primarily as a lightweight CLI runtime for local models rather than a full-featured chat interface.
#1SpecialistOpen-source workflow automation built for AI agents and technical teams
SpecialistA free, open-source personal AI agent that learns your projects and works across every messaging app.
#3
Chat with 30+ leading AI models in one clean, fast workspace

SpecialistOpen-source personal AI assistant that runs on your own machine and works from chat apps

SpecialistSpecializes in visual workflow building and RAG pipelines rather than serving purely as a chat interface.

Free / Open-sourceFocuses on collaborative team AI workspaces and plugins, but shares similar open-source architectural goals.
SpecialistFocuses heavily on privacy-first document chat and local RAG pipelines, but offers fewer general-purpose chat UI features.

Free / Open-sourceOpen-source frontend stack for building AI agents and copilots inside your own product


Free / Open-sourceOffers robust multi-provider support and advanced user permission management, but has a slightly different configuration setup.

Compare GPT, Claude, and Gemini answers side by side in one chat
Free / Open-sourceFunctions primarily as a lightweight CLI runtime for local models rather than a full-featured chat interface.
SpecialistOpen-source workflow automation built for AI agents and technical teams
SpecialistA free, open-source personal AI agent that learns your projects and works across every messaging app.
Chat with 30+ leading AI models in one clean, fast workspace
SpecialistOpen-source personal AI assistant that runs on your own machine and works from chat apps
SpecialistSpecializes in visual workflow building and RAG pipelines rather than serving purely as a chat interface.
The best frontend for AI.
SpecialistFocuses heavily on privacy-first document chat and local RAG pipelines, but offers fewer general-purpose chat UI features.
Free / Open-sourceOpen-source frontend stack for building AI agents and copilots inside your own product
Free / Open-sourceOffers robust multi-provider support and advanced user permission management, but has a slightly different configuration setup.
Compare GPT, Claude, and Gemini answers side by side in one chat