8 Best GPT Mobile Alternatives in 2026 (Open Source)

GPT Mobile — Chat app for Android that supports answers from multiple LLMs at once. Bring your own API key AI client. Supports OpenAI, Anthropic, Google, and Ollama. Designed with Material3 & Compose.. vs ChatGPT/Claude apps: Open-source Android-native app that lets you chat with multiple LLMs simultaneously in one conversation, with Material You design and fully local chat storage

These 8 open-source tools do the same job. They are ordered by how closely they match GPT Mobile, with live GitHub data so you can see which projects are actively maintained.

1. 1. Chatbox

   Powerful AI Client

   What sets it apart: vs ChatGPT web app: supports multiple LLM providers with local data storage; vs Open WebUI: lighter desktop-native app with mobile support rather than self-hosted web UI

   Best for: Desktop users wanting unified LLM chat interface; Privacy-conscious users preferring local data storage; Teams sharing API resources

   ⭐ 41.9kGPT Mobile vs Chatbox →Full profile →

2. 2. NextChat

   ✨ Light and Fast AI Assistant. Support: Web | iOS | MacOS | Android | Linux | Windows

   Best for: Privacy-conscious users wanting local-only AI chat with multi-provider support; Teams needing a quick-deploy ChatGPT alternative on their own infrastructure; Organizations seeking a brandable, customizable AI chat interface

   ⭐ 88.8kGPT Mobile vs NextChat →Full profile →

3. 3. Open WebUI

   User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

   What sets it apart: Unlike LM Studio (desktop-only, personal use), Open WebUI is a full multi-user platform with RAG, RBAC, SCIM provisioning, 9 vector DBs, and Google Drive/OneDrive integration — the most feature-complete self-hosted ChatGPT alternative

   Best for: Teams wanting a self-hosted ChatGPT alternative with full data control and Ollama integration; Organizations needing enterprise-grade AI platform with LDAP/SCIM/SSO and multiple vector DB backends

   ⭐ 153.6kGPT Mobile vs Open WebUI →Full profile →

4. 4. Chatbot UI

   AI chat for any model.

   What sets it apart: vs ChatGPT web app: open-source, self-hosted with Supabase backend for full data ownership — the most popular open-source ChatGPT UI clone with 28k+ stars

   Best for: Developers wanting a self-hosted ChatGPT-like UI with data persistence; Teams needing an open-source chat interface they can customize; Organizations wanting full control over their AI chat data

   ⭐ 33.4kGPT Mobile vs Chatbot UI →Full profile →

5. 5. LobeHub

   The ultimate space for work and life — to find, build, and collaborate with agent teammates that grow with you. We are taking agent harness to the next level — enabling multi-agent collaboration, effo

   What sets it apart: Unlike ChatGPT (closed) or Open WebUI (simple chat wrapper), Lobe Chat is an open-source agent collaboration platform with Agent Groups, white-box personal memory, a 10,000+ MCP plugin marketplace, and multi-modal support — positioning it as a full human-agent co-evolution workspace.

   Best for: Teams wanting a modern ChatGPT alternative with agent collaboration, memory, and 10,000+ plugins; Developers seeking a self-hostable, extensible chat framework with MCP marketplace support

   ⭐ 82.9kGPT Mobile vs LobeHub →Full profile →

6. 6. Jan

   Jan is an open source alternative to ChatGPT that runs 100% offline on your computer.

   What sets it apart: Most polished desktop LLM app combining local inference with cloud providers — ChatGPT-like UX for local models, unlike command-line-focused Ollama

   Best for: Privacy-focused users wanting local LLM inference; Developers needing a local OpenAI-compatible API for testing

   ⭐ 44.7kGPT Mobile vs Jan →Full profile →

7. 7. 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

   ⭐ 66.6kGPT Mobile vs AnythingLLM →Full profile →

8. 8. TextGen

   The original local LLM interface. Text, vision, tool-calling, training, and more. 100% offline.

   What sets it apart: Most feature-complete local LLM web UI with 4 inference backends, training, tool-calling, vision, and image gen — vs Ollama (CLI-focused) or LM Studio (closed source)

   Best for: Running any LLM locally with a full-featured web UI; Privacy-conscious users wanting 100% offline AI; Developers needing a local OpenAI-compatible API server

   ⭐ 47.7kGPT Mobile vs TextGen →Full profile →