Butterfly is a web-based, xterm-compatible terminal emulator written in Python, leveraging WebSockets and Tornado to allow users to access and interact with a terminal via their browser without plugins, featuring robust theming, multi-session support, browser-native features, and security mechanisms. Native browser scroll and search. Theming in css / sass (20 preset themes) endless possibilities. HTML in your terminal! cat images. Multiple sessions support (à la screen -x) to simultaneously access a terminal from several places on the planet. Secure authentication with X509 certificates.

Features

  • Full xterm compatibility with extensive feature support
  • Native browser scroll and search capabilities
  • CSS/SASS theming with ~20 preset themes
  • Supports HTML rendering within terminal (e.g. images, tables)
  • Multiple simultaneous sessions (like screen -x)
  • Secure authentication via X509 certificates, 16‑million color support, keyboard selection, desktop notifications, geolocation in browser

Project Samples

Butterfly Screenshot 1

Project Activity

See All Activity >

Categories

Terminal Emulators

License

MIT License

Follow Butterfly

Butterfly Web Site

Other Useful Business Software
Train ML Models With SQL You Already Know Icon
Train ML Models With SQL You Already Know

BigQuery automates data prep, analysis, and predictions with built-in AI assistance.

Build and deploy ML models using familiar SQL. Automate data prep with built-in Gemini. Query 1 TB and store 10 GB free monthly.
Try Free
Rate This Project
Login To Rate This Project

User Reviews

Be the first to post a review of Butterfly!

Additional Project Details

Operating Systems

Linux, Mac, Windows

Programming Language

CoffeeScript

Related Categories

CoffeeScript Terminal Emulators

Registered

2025-08-21
Report inappropriate content