JummBox is an online tool for sketching and sharing instrumental melodies. You can find it here. It is a modification of the original BeepBox, focused on improving ease-of-use.
All song data is packaged into the URL at the top of your browser. When you make changes to the song, the URL is updated to reflect your changes. When you are satisfied with your song, just copy and paste the URL to save and share your song!
JummBox is free, as is BeepBox. If you ever feel so inclined, definitely send something to the original creator, John Nesky's PayPal. He deserves it :)
The compilation procedure is identical to the repository for BeepBox. I will include the excerpt on compiling from that page's readme below for convenience:
The source code is available under the MIT license. The code is written in TypeScript, so to compile it you'll need to install the TypeScript compiler, and to do that you'll need to have already installed node and npm.
Running the TypeScript compiler command (tsc) in the repository should output JavaScript (.js) files into the website/ folder. I also recommend installing uglify-es because I use that to create minified JavaScript (.min.js) files. I've included shell scripts that run the compiler and minifier for you.
Those who are familiar with TypeScript may be surprised to learn that I do not use any of TypeScript's module systems. Instead I use triple-slash references to include code and namespaces to keep it out of the global namespace. That means that I don't need any web pack system to be able to deploy a single JavaScript file. I don't use any other libraries so I don't need a package manager either, aside from installing npm in order to install TypeScript and Uglify. BeepBox is relatively self-contained.
The code is divided into several folders. Again, this bit is all the same as BeepBox. I will include the original excerpt again for reference.
The synth/ folder has just the code you need to be able to play BeepBox songs out loud, and you could use this code in your own projects, like a web game. After compiling the synth code, open website/synth_example.html to see a demo using it.
The editor/ folder has additional code to display the online song editor interface. After compiling the editor code, open website/index.html to see the editor interface.
The player/ folder has a miniature song player interface for embedding on other sites.
The website/ folder contains index.html files to view the interfaces, and the TypeScript compiler is configured to output JavaScript files into this folder.