Echo JS 0.11.0

There's also requestIdleCallback(), which is a new browser API that accomplishes more-or-less what this library does (only supported in Chrome right now, though): https://developer.mozilla.org/en-US/docs/Web/API/Window/requestIdleCallback

There's also the Star Wars API: http://swapi.co/

I'm a big fan of LevelDB and the Level community. PouchDB uses LevelDB under the hood, and we've optimized for several different storage engines (LevelDB, IndexedDB, WebSQL) across several different browsers and Node, so we've had an opportunity to compare the performance of all of them. And for our use-case and on Mac hardware anyway, LevelDB in Node is always the fastest (runner-up is WebSQL on Safari).

So if you are building for Electron and have a wealth of database options to choose from, it's hard to go wrong with LevelDB. :) Only downside is the complexity of re-building for Electron, but as timoxley says you can use level-js if that becomes an issue.