Social networking icons, although there are many of them, new and original ones are worth-bookmarking considering almost every website needs some social love.

Stampaxx is a set of 100 social icons that are in the shape of stamps and all have their unique social network-related motto.

They are available in 2, single-file, vector formats: .PSD and .EPS, so, updating them is so easy.

Website: http://www.stampaxx.com/

Bookmarklets are amazing little helpers whether you are a web designer/developer or a standard internet user. There is a handy one for everybody.

For ex, lately, I am regularly using Holmes.css as a part of my HTML debugging process, Syntaclet on dev-related articles and Readability for reading long articles.

And, there are many other useful bookmarklets out there (check out 15 Must-Have Bookmarklets For Web Designers And Developers).

Boo.kmarked is a very simple and free to use web application that converts any given JavaScript into a bookmarklet.

The application just adds the tag with a function that calls your script accordingly and that's all.

P.S. There are also other alternatives like Bookmarkleter or Bookmarklet maker.

Website: http://boo.kmarked.com/

jQuery has lots of plugins and jQuery UI to improve its functionality in many ways.

Ninja UI is a plugin for the framework that brings new alternatives to them in a single package.

It includes widgets like buttons, accordion, icons, tooltips/modal box, slider, rating, tabs, auto-suggest and canvas-powered loader icon.

They are unobtrusive and the icons used actually come as a separate plugin that is in the form of web fonts.

P.S. Its documentation is not complete yet but the source of the examples are pretty self-explanatory.

Requirements: jQuery
Compatibility: All Major Browsers
Website: http://ninjaui.com/
Demo: http://ninjaui.com/examples
Download: https://github.com/ninja/ui

Leaflet is a JavaScript library for creating tile-based maps which work in both mobile and desktop browsers.

With a very easy-to-use API and OOP-based code, the library is modular and extensible.

It has support for features like drag panning, scroll wheel or double-click zoom, zooming animation, pure CSS3 pop-ups and more.

Leaflet is lightweight, very well-documented and supported with examples.

P.S. Although the examples on the resource page use only OpenStreetMap, other popular providers will work with the library as well.

Requirements: No Requirements
Website: http://leaflet.cloudmade.com/
Demo: http://leaflet.cloudmade.com/examples.html
Download: http://leaflet.cloudmade.com/download.html

We all know robots.txt, the text file that is uploaded to the root folder of websites and helps us communicate with the search engine bots for telling them which pages to not to index.

What if we want to communicate with humans and tell them who built the website? There is usually not a suitable space for this in websites and visitors may not be interested in seeing such an information inside "about" pages (in most cases).

This is where Humans.txt, which is an initiative for knowing the people behind a website, comes in.

Just like robots.txt, you upload a humans.txt file to the root folder of the website and can mention every detail that "careful eyes" would be interested in learning about the team behind, the designers, developers, copywriters, etc.

It won't be wrong to expect it getting popular as some big guys like Googleor Flickr already have it. And, WRD has it too : ).

Website: http://humanstxt.org/

Tile5 is an open source HTML5 mapping JavaScript library that enables developers to integrate existing mapping platforms for providing a rich HTML5 experience.

It is compatible with most of the mapping providers like Google, Bing, Yahoo, MapQuest and more.

Besides the API for mapping, the library is also functional for creating moregeneric tiling application interfaces.

With the compatibility HTML5 offers, Tile5 is targeted at both desktop and mobile browsers.

Tip: there are very nice demos offered to see the power of the library.

Compatibility: HTML5 Enabled Browsers
Website: http://www.tile5.org/
Demo: http://www.tile5.org/demos/
Download: http://www.tile5.org/download

Cloud9 IDE is an open source application that aims to provide a powerful and focused IDE for JavaScript developers.

It is powered by the Ajax.org platform + makes use of HTML5, node.js, socket.io and many other projects.

The application has a pretty fast text editor with bundled syntax highlighting support for JS, HTML, CSS and mixed modes.

Cloud9 IDE has integrated debuggers for node.js and Google Chromewhich can be started, paused and stopped from the IDE.

Using WebDAV, it can connect to remote workspaces too and has a plugin system for improving it further (already has several bundled plugins).

P.S. The application is still in early development stages, can be a little buggy but improved continiously.

Requirements: Git 1.7+ (for Windows installations)
Website: http://www.cloud9ide.com/
Download: http://github.com/ajaxorg/cloud9