Quartzite is an AI productivity app / Prompt IDE that allows you to interact with Large Language Models (LLMs) such as Open AI’s GPT-4, or Google’s Gemini.
Cost / License
- Paid
- Proprietary
Platforms
- Online

Apps similar to Instella include Lumo by Proton, which is open source with a free version. Other options are DeepSeek, Ollama, Mistral Vibe and Claude. You're spoiled for choice with AI Chatbots like Instella: we list more than 50 alternatives for the web, Android, Mac, Windows and iPhone.
Quartzite is an AI productivity app / Prompt IDE that allows you to interact with Large Language Models (LLMs) such as Open AI’s GPT-4, or Google’s Gemini.

AI workspace offers a unique whiteboard interface, combining chat with imported YouTube videos, documents, and web content. Users connect elements to AI-powered chats, switch between Claude and GPT-4o, and streamline content creation for diverse workflows.



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