I'll venture that the short answer is "no" because all the interfaces are for the CLI. But it looks like most of the application logic (in libs/commands.js) is separated from the interface stuff (in cli.js) so it could be repurposed if someone wanted to put the work in. Probably not worth it tho cuz it would be so different from the node app re: dependency management, interface, storage etc.
If you want a web to-do list, there are a million. Check here: https://github.com/addyosmani/todomvc for about 10. You can also check out this super light weight html5 agile micro buzzword buzzword buzzword browser todo-list app here: http://www.webdevout.net/test?0n&raw ;) (tip o' the hat to https://github.com/aphelionz for this one, I bit the idea from him).