About UltraBox

UltraBox is an open-source BeepBox-family editor that brings ideas from more than 30 community modifications into one browser-based music workflow. Created in June 2023, the project focuses on giving chiptune creators more room for synthesis, samples, arrangement, and offline use while preserving the familiar grid-based approach.

Our Mission

To make a practical, accessible chiptune editor by bringing useful BeepBox-community ideas into one browser-based platform.

30+
Mods Integrated
32
Max Channels
6-Op
FM Synthesis
100%
Free & Open Source

Core Team

Neptendo

Project Creator & Lead Developer

Main

Core Developer

LeoV

Feature Development

Mid

Development & Support

choptop84

Feature Contributions

Slarmoo

Development

Built on BeepBox

UltraBox is built upon BeepBox by John Nesky and integrates features from amazing mods including Jummbox, GoldBox, ModBox, AbyssBox, and 25+ others. We're grateful to the entire BeepBox community for their innovations and contributions.

Get in Touch

Have questions, suggestions, or need support? We'd love to hear from you!

Website: ultrabox.blog
Last Updated: September 18, 2026