Meltdown

Unconventional & Solid 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. Fully scriptable through Python for semi-agentic workflows. The code and architecture are carefully crafted to ensure a stable and effective foundation.

- 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, combos, shortcuts, various ways to use commands

- Auto-Scroll responses, with variable speed, by clicking a button

- Script system with a Python API to interact with the conversations

- Scripts can be placed in subdirectories with shell.nix, flake.nix, or requirements.txt files

- 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

- Read and write to the clipboard for quick edits

- Fork conversations to open new tabs based on previous responses

- Edit the user prompts or the AI responses to remove imperfections

- Assign a model to be responsible of automatically generating the tab titles

- List files at various locations like logs, sessions, scripts, images, documents

- Smart scrolling for embedded widgets that don't interrupt regular scrolling

- Define personalities for any AI name by using the Characters dialog

- Make PDF documents of the conversations with a single click

- No telemetry. It doesn't phone home. No accounts required

- Significantly lighter on CPU and RAM than Electron-based alternatives

- Multilingual support — 23 languages available