JummBox
Compose and share chiptune melodies online with JummBox, which stores songs in a text link.
About JummBox
JummBox is an online tool for sketching and sharing chiptune melodies. It is a modification of BeepBox by John Nesky and uses a pattern-based editor with separate rows for melodies, harmonies, and drums.
All song data is contained in the browser URL, which updates as changes are made. Copying the URL saves and shares the song, as songs are not received, recorded, or distributed by JummBox servers. An offline version with the same features is available.
Key features
- Pattern editor with separate rows for melodies and drums
- Add notes by clicking rows with immediate audio playback
- Adjust note duration by dragging horizontally on notes
- Stack notes to create chords played simultaneously
- Bend pitch and adjust volume by vertical dragging
- Copy URL to save and share song data
Best for: People who want to sketch chiptune melodies and share them through a link.
Good for
- States that it does not collect, track, or share user data
- Does not claim ownership; original songs belong to their authors
- Offline version available with the same features
Watch out for
- No server storage; saving and sharing depends on keeping the copied URL
JummBox at a glance
- Website
- jummb.us
- 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 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Audio Editing & Production
JummBox alternatives
Tools and sites you could use instead, ranked by how closely they match.
JummBox lets users compose and share instrumental melodies in a browser, storing song data in the page URL.
FreeOpen source
19 alternativesGoldBox lets users sketch and share chiptune melodies in a browser, as a modification of JummBox and BeepBox.
Sketch and share instrumental music online with BeepBox, which stores songs as text data.
Compose songs with Drummy's online beat maker, using pattern layers and a piano roll.
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JummBox FAQ
How do I save or share a song in JummBox?
Copy and paste the browser URL, which contains all song data and updates as you edit.
Does JummBox store songs on its servers?
No. The site states no songs are received, recorded, or distributed by its servers; the browser converts data in the URL after the hash into sound.
Who owns songs made with JummBox?
JummBox does not claim ownership, so original songs belong to their authors.
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