Unconventional by Design
Meltdown is built in Python with Tkinter, replacing the heavy embedded browser found in most clients with fully custom widgets — including a markdown engine built from scratch. This keeps it fast, lean, and precisely in your control. Run multi-model sessions, upload files, and extend your LLMs with tools like web search, image creation, document generation, and persistent memory.
- Tabs, with a wide variety of ways to open, manage, and close them
- Multiple ways to save log files or upload them to external services
- Hundreds of commands and arguments for full programmatic control
- Supports local servers, ChatGPT, Gemini, Claude, Kimi, and OpenRouter
- Web search, image generation, document creation, and persistent user memory
- Multiple models can be active simultaneously, with the option to use the first, a specific one, or all at once
- Code snippets with syntax highlighting across multiple languages
- Custom find widget, conversation summarization, and custom prompt registration
- Additional ways to submit prompts, including via a file listener or directly from the terminal
- Command Palette, mouse gestures, and filterable menus
- A task system that executes commands on a scheduled basis
- A locket system for discreetly retrieving sensitive data
- Aliases, scripts, shortcuts, and smart scrolling
- Buttons to jump to the top, bottom, or specific points in a conversation
- A signal system for sending conversation data to remote servers
- Multiple profiles, with the ability to save and load configurations and sessions
- Open and interact with conversations or items using system applications
- Dynamic ASCII tables that display content cleanly and resize with the window
- Multiple themes including dark, light, and high contrast
- No telemetry. It doesn't phone home
- Significantly lighter on CPU and RAM than Electron-based alternatives
Available Themes
Licensing
Personal & Educational Use: Meltdown is completely free for students, hobbyists, and independent non-commercial use.
Commercial Use: A paid license is required for any professional, corporate, or organizational use. This includes use within a company, agency, institution, or on work-owned devices.
- Professional License: Starting at $249 per seat for individuals and small teams. Volume discounts are available for multi-seat purchases.
- Site / Enterprise License: Unlimited deployment across your organization with a single purchase, including priority support and invoicing. Contact us for a custom quote.
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Documentation
Portable Executables
Standalone executables. No installation required.
By downloading or using Meltdown, you agree to the licensing terms above. The software is provided "as is" without warranty of any kind. Commercial, corporate, or organizational use is expressly prohibited without a valid commercial license.