SoundBox

Free plan Self-hostedWeb

What SoundBox is

SoundBox is a browser-based HTML5 synthesizer and music tracker for composing synthetic music, including music for small JavaScript demos such as 4K and 8K productions. Songs are organized into tracks and patterns, and the instrument editor includes two oscillators, noise, an envelope, an arpeggio, effects and an LFO. The interface supports song or range playback, looping and real-time audio while entering notes; real-time playback requires the Web Audio API. SoundBox can import Sonant songs and binary song files, and save songs as binary files or data URLs. A data URL stores the song in the URL rather than in a file or on a server. Exports include WAV and JavaScript, and the separate player-small.js routine can be used in software. The free editor is licensed under GNU GPL version 3; player-small.js uses the zlib/libpng license. It can run on the web or as a local copy served through a web server, but opening it through file:// is unsupported. Its repository is archived and read-only.

Who it suits

SoundBox may suit people composing compact synthetic music for JavaScript demos or exploring tracker-based composition. Its local-use requirement and archived repository matter to anyone planning to host or adapt it.

What it does well

Free browser-based music tracker and editor.
Includes WAV and JavaScript export.
Imports Sonant songs and binary song files.
Instrument editor includes effects and an LFO.

What to know first

Local copies must be served through a web server.
Opening through file:// is unsupported.
Repository is archived and read-only.
Real-time note playback requires the Web Audio API.

Getting started

Open the SoundBox website in a web browser.
Use the editor's tracks and patterns to compose a song.
Enter notes and use playback; real-time note playback requires the Web Audio API.
Save the song as a data URL or binary file, or export WAV or JavaScript.
To host a local copy, serve it through a web server.

Verdict

SoundBox provides tracker-style composition, sound design and export tools for synthetic music, with no listed price. Note the archived repository and web-server requirement if you plan to run it locally.

Questions

Is SoundBox free?

Yes. SoundBox has a free plan.

Which platforms does SoundBox support?

It is available on the web and can be self-hosted.

Can I use MIDI input?

Yes. The maker's page says notes can be entered with a MIDI input device and notes that this required the Jazz-Plugin.

What formats can SoundBox import and export?

It imports Sonant songs and binary song files from a local computer. It exports WAV and JavaScript, and songs can be saved as binary files or data URLs.

What licenses apply?

The editor is licensed under GNU GPL version 3. The player-small.js routine is released under the zlib/libpng license.

Can I open a local copy directly?

No. A local copy must be served through a web server; opening it using the file:// protocol is unsupported.

Facts from SoundBox's own pages

Audio export: SoundBox supports WAV export. · bitsnbites.eu, 9 Oct 2026
Codebase: The repository describes the code as pure HTML, JavaScript, and CSS, without third-party toolkits or frameworks, while noting some portability shims. · github.com, 9 Oct 2026
Composition: The editor organizes music into tracks and patterns. · sb.bitsnbites.eu, 9 Oct 2026
Import: The editor can import Sonant songs. · bitsnbites.eu, 9 Oct 2026
License: The editor is licensed under GNU GPL version 3, while player-small.js is released under the zlib/libpng license. · github.com, 9 Oct 2026
Local hosting: A local copy must be served through a web server; opening it with the file:// protocol is unsupported. · github.com, 9 Oct 2026
Local use: The maker's repository says users can run a local copy by serving it through a web server; opening it with the file protocol is unsupported. · github.com, 9 Oct 2026
MIDI input: The help page says notes can be entered with a MIDI input device and that the maker's instructions require the Jazz-Soft Jazz-Plugin for MIDI input. · github.com, 9 Oct 2026
Organization: The maker’s site identifies itself as Bits'n'Bites and says its motto is “Learning things, bit by bit…”. · bitsnbites.eu, 9 Oct 2026
Playback: SoundBox provides real-time audio playback when entering notes, requiring the Web Audio API. · bitsnbites.eu, 9 Oct 2026
Playback and export: The interface offers song and range playback, loop playback, JavaScript export, and WAV export. · sb.bitsnbites.eu, 9 Oct 2026
Player integration: SoundBox provides a standalone player routine named player-small.js for use in software. · github.com, 9 Oct 2026
Product: SoundBox is an HTML5 synthesizer music tracker and editor that runs in a browser. · sb.bitsnbites.eu, 9 Oct 2026
Purpose: SoundBox is an HTML5 synth music tracker and editor for composing synthetic music in a browser, suited to music for small JavaScript demos (4K/8K). · github.com, 9 Oct 2026
Repository status: The GitHub repository says it was archived by its owner on August 31, 2023, and is read-only. · github.com, 9 Oct 2026
Saving: Songs can be saved as data URLs or binary files; the help page says a song in a data URL is stored in the URL rather than in a file or on a server. · github.com, 9 Oct 2026
Song files: SoundBox can import and export binary song files to and from a local computer. · bitsnbites.eu, 9 Oct 2026
Song structure: The editor organizes music into tracks and patterns, following the design of a music tracker. · github.com, 9 Oct 2026
Sound design: The instrument editor includes two oscillators, noise, an envelope, an arpeggio, effects, and an LFO. · sb.bitsnbites.eu, 9 Oct 2026
Support: The maker's repository welcomes contributions through pull requests. · github.com, 9 Oct 2026
Use case: The maker describes SoundBox as suitable for creating music for small JavaScript demos, including 4K and 8K demos. · github.com, 9 Oct 2026

Where SoundBox stands on Freedom251

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