Notes 
#1 
Proton's hosted AI assistant with zero-access encryption of saved chats and a strict no-logs policy.
Open Source Private AI
The Private AI we recommend, filtered to Open Source. See all Private AI →
#2 
Ollama lets you download and run large language models locally via a simple CLI and REST API. Supports a growing library of open models including Llama, Mistral, and Gemma on Windows, Mac, and Linux with no data sent to the cloud.
#3 
A Mozilla project that packages a complete LLM and its runtime into a single executable file. Download one file, run it on Windows, Mac, or Linux with no installation, no dependencies, and no network connection required.
#4 
Offline AI chat from Ente that runs models entirely on your device, with no network calls required.
#5 
KoboldCpp is a self-contained local AI inference tool with a built-in web UI. It runs GGUF text, image, and speech models with no installation beyond a single binary, primarily aimed at creative writing and roleplay workflows.