UltraBox
UltraBox combines features from several BeepBox modifications in one music tool and provides instructions, FAQs, and patch notes.
About UltraBox
UltraBox is a web-based music editor and a mod of BeepBox. Its developers say it takes elements from most of the BeepBox mods available and combines them in one package. Users add and remove notes in a pattern editor, arrange patterns into a song, and play the result in the browser. Several rows of patterns can play at once, with melodic or harmonic rows above and a drum row at the bottom.
The homepage describes instructions, an FAQ, and patch notes for tracking changes. Song data is stored in the page URL, so copying the link saves and shares the song. The homepage does not describe account features, file export, or the browsers and devices supported. It also links an archive of BeepBox songs that were shared on Twitter before 2023-05-22.
Key features
- Note entry and editing by clicking rows and dragging to change duration
- Chords created by clicking above or below an existing note
- Pitch bending and volume adjustment by dragging vertically on notes
- Multiple pattern rows that play simultaneously, with drums on the bottom row
- Song data stored in the URL, so copying the link shares the song
- Keyboard shortcuts for play, undo, redo, copy, paste, and rearranging channels
Best for: Music makers who want a browser-based tool that brings together features from several BeepBox mods.
Good for
- Combines elements from most of the BeepBox mods available in one package
- Provides instructions, an FAQ, and patch notes on the homepage
- Song sharing requires only copying the page URL
Watch out for
- Some features are hard to find, according to the homepage
- All song data is contained in the URL, so the link is the saved copy of the song
UltraBox at a glance
- Website
- ultraabox.github.io
- Category
- Music & Audio › Audio Editing & Production
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Audio Editing & Production
UltraBox alternatives
Tools and sites you could use instead, ranked by how closely they match.
A modification of UltraBox, AbyssBox lets users sketch and share instrumental music with additional effects and themes.
GoldBox lets users sketch and share chiptune melodies in a browser, as a modification of JummBox and BeepBox.
Based on Pure Data, plugdata provides visual audio patching with desktop, mobile, and plugin formats listed for several platforms.
Free
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UltraBox FAQ
Where can I find answers to common questions?
The homepage links to an FAQ page, and patch notes show the latest changes.
How do I save and share a song?
Song data is kept in the URL at the top of the browser. When you are satisfied with a song, copy and paste the URL to save and share it.
Can I browse songs made with BeepBox?
The homepage links to an interactive archive of songs shared on Twitter before 2023-05-22.
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