SoundBox
SoundBox is a free HTML5 synthesizer, music tracker, and editor that runs in a browser.
What SoundBox is
SoundBox is a free HTML5 synthesizer, music tracker, and editor that runs in a browser. It arranges compositions into tracks and patterns and provides an instrument editor with two oscillators, noise, an envelope, an arpeggio, effects, and an LFO. Users can play songs or ranges, loop playback, and hear notes while entering them; real-time playback requires the Web Audio API. SoundBox imports Sonant songs and binary song files, and exports WAV and JavaScript. Songs can be saved as binary files or data URLs, with a data URL storing the song in the URL rather than on a server. The player-small.js routine can be embedded in software. MIDI input is supported. A local copy must be served through a web server, because file:// opening is unsupported. The editor uses GNU GPL version 3, while player-small.js uses the zlib/libpng license. SoundBox is available on the web or self-hosted, but its GitHub repository is archived and read-only.
Good
- Runs in a web browser
- Supports tracks and patterns
- Offers WAV and JavaScript export
- Imports Sonant songs
- Supports MIDI input
Watch out
- Real-time playback requires Web Audio API
- Local copies need a web server
- file:// opening is unsupported
- Repository is archived and read-only
Who it suits
It suits browser-based composition of synthetic music, especially assets for small JavaScript demos such as 4K and 8K demos. Developers can also use its standalone player routine in software.
Verdict
SoundBox provides a focused tracker workflow with synthesis controls, browser playback, and export options. Its archived repository and local-serving requirement matter when deciding how to use or maintain it.
The facts
Each one read from SoundBox's own pages, with the date it was checked.
What it does
- Audio export
- SoundBox supports WAV export.checked 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.checked 9 Oct 2026
- Composition
- The editor organizes music into tracks and patterns.checked 9 Oct 2026
- Import
- The editor can import Sonant songs.checked 9 Oct 2026
- License
- The editor is licensed under GNU GPL version 3, while player-small.js is released under the zlib/libpng license.checked 9 Oct 2026
- Local hosting
- A local copy must be served through a web server; opening it with the file:// protocol is unsupported.checked 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.checked 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.checked 9 Oct 2026
- Organization
- The maker’s site identifies itself as Bits'n'Bites and says its motto is “Learning things, bit by bit…”.checked 9 Oct 2026
- Playback
- SoundBox provides real-time audio playback when entering notes, requiring the Web Audio API.checked 9 Oct 2026
- Playback and export
- The interface offers song and range playback, loop playback, JavaScript export, and WAV export.checked 9 Oct 2026
- Player integration
- SoundBox provides a standalone player routine named player-small.js for use in software.checked 9 Oct 2026
- Product
- SoundBox is an HTML5 synthesizer music tracker and editor that runs in a browser.checked 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).checked 9 Oct 2026
- Repository status
- The GitHub repository says it was archived by its owner on August 31, 2023, and is read-only.checked 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.checked 9 Oct 2026
- Song files
- SoundBox can import and export binary song files to and from a local computer.checked 9 Oct 2026
- Song structure
- The editor organizes music into tracks and patterns, following the design of a music tracker.checked 9 Oct 2026
- Sound design
- The instrument editor includes two oscillators, noise, an envelope, an arpeggio, effects, and an LFO.checked 9 Oct 2026
- Support
- The maker's repository welcomes contributions through pull requests.checked 9 Oct 2026
- Use case
- The maker describes SoundBox as suitable for creating music for small JavaScript demos, including 4K and 8K demos.checked 9 Oct 2026
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