JummBox

Online tool for sketching and sharing instrumental music, an extended fork of BeepBox with more instruments.

Artifact by John Nesky and Jummbus

IndexedMIT★ 190Audio & videoNo sign-up

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Opens jummb.us in a new tab. Nothing to install.

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You provide: Notes placed on pattern grid
You get: Shareable song link and audio
Account: No sign-up needed
AI: No AI: a plain tool
Your input: Not stated: check the tool's privacy notes before using private data
Price: Free to use
Made with: Open-source web app
Source: Open source
Link check: Answered on Oct 31, 2026

About

JummBox is an open-source web app in the audio video category (chiptune sequencer). It opens in your browser, so there is nothing to install. You provide notes placed on pattern grid and get shareable song link and audio. It needs no account. It is a plain tool: no AI model is involved. The source code is public on GitHub (jummbus/jummbox).

Category: Audio & video · chiptune sequencer

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Stars: 190

Details

Auth: No auth
License: MIT
Repository: github.com/jummbus/jummbox
Website: jummb.us/
First seen: Oct 31, 2026
Last checked: Oct 31, 2026
Source: GitHub

Cite this page

JummBox: free online tool. Agent Mart. https://agentmart.dev/artifacts/jummbox (last updated 2026-10-31)