Apps similar to wraplet include jQuery, which is free and open source. Other options are Zepto.js, Dojo Toolkit, DOMtastic and Bliss JS. In total there are five JavaScript Frameworks like wraplet for the web, self-hosting, Mac, Windows and Linux.
jQuery is a fast, small, and feature-rich JavaScript library. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers.
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Zepto is a minimalist JavaScript library for modern browsers with a largely jQuery-compatible API.
Dojo Toolkit is an open source modular JavaScript library (or more specifically JavaScript toolkit) designed to ease the rapid development of cross-platform, JavaScript/Ajax-based applications and web sites.
Small & fast DOM and event library for modern browsers. Having the same familiar API as jQuery (but without the extra "weight" of modules like $.ajax, $.animate, and $.Deferred), it works great stand-alone or paired up with e.g. Backbone.
Want to use Vanilla JS but find native APIs a bit unwieldy? Bliss is for you.
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