"PouchDB is an open-source JavaScript Database inspired by Apache CouchDB that is designed to run well within the browser.

PouchDB was created to help web developers build applications that work equally as well offline as they do online. It enables applications to store data locally while offline, and synchronize it with CouchDB and compatible servers when the application is back online, keeping the user's data in sync no matter where they next login."

"Helps front-end developers to reach a good quality and good performances, based on phantomas and grunt-phantomas.

Day after day, while working on your project, keep an eye on performance metrics and get warnings for things you should optimize."

Shindig is a new project in the Apache Software Foundation incubator and is an open source implementation of the OpenSocial specification and gadgets specification.

The architectural components of Shindig can be broken down as follows:

* Gadget Container JavaScript -- core JavaScript foundation for general gadget functionality. This JavaScript manages security, communication, UI layout, and feature extensions, such as the OpenSocial API.
* Gadget Server -- used to render the gadget XML into JavaScript and HTML for the container to expose via the container JavaScript.
* OpenSocial Container JavaScript -- JavaScript environment that sits on top of the Gadget Container JavaScript and provides OpenSocial specific functionality (profiles, friends, activities, datastore).
* OpenSocial Data Server -- an implementation of the server interface to container-specific information, including the OpenSocial REST APIs, with clear extension points so others can connect it to their own backends.

This jQuery plugin generates sparklines (small inline charts) directly in the browser using data supplied either inline in the HTML, or via javascript.

The plugin is compatible with most modern browsers and has been tested with Firefox 2+, Safari 3+, Opera 9 and Internet Explorer 6 & 7.

Juicer is a command line tool that helps you ship frontend code for production.

High level overview; Juicer can

* figure out which files depend on each other and merge them together, reducing the number of http requests per page view, thus improving performance
* use YUI Compressor to compress code, thus improving performance
* verify that your JavaScript is safe to minify/compress by running JsLint on it
* cycle asset hosts in CSS files
* add "cache busters" to URLs in CSS files
* recalculate relative URLs in CSS files, as well as convert them to absolute (or convert absolute URLs to relative URLs)

Jester is a JavaScript implementation of REST, with syntax modeled after ActiveResource. You can use it to write code to read, create, and update the data on your server.

* Great Syntax – If you’ve gotten used to dirt-easy syntax like ActiveRecord’s “User.find(1)” for getting records, you can look forward to the same simplicity in Jester. Wherever possible, Jester takes advantage of JavaScript’s flexibility to keep things simple.

* Associations – Jester supports and reflects your Rails associations, detecting them automatically if your server includes them in its output.

* Plays With Others – Jester supports “JSONP”, a format for JSON that allows your API to be shared with JavaScript remotely. Sites like Twitter that support this work perfectly with Twitter, with minimal configuration on your part.

* Dependencies – Prototype, a server that uses RESTful URL and format conventions as popularized by Rails and ActiveResource. In Rails, a controller whose routes are defined using “map.resources” will work with Jester with no extra configuration.