LevelDB is a fast key-value storage engine written at Google that provides an ordered mapping from string keys to string values. Google has recently announced that they are open sourcing LevelDB under a BSD-style license.

LevelDB is a C++ library that can be used in many contexts. For example, LevelDB may be used by a web browser to store a cache of recently accessed web pages, or by an operating system to store the list of installed packages and package dependencies, or by an application to store user preference settings.

Published under: Framework | BSD License

Sinon.JS is a Standalone test spies, stubs and mocks for JavaScript. No dependencies, works with any unit testing framework. A test spy is a function that records arguments, return value, the value of this and exception thrown (if any) for all its calls.

Test spies are useful to test both callbacks and how certain functions/methods are used throughout the system under test. Use a stub when you want to control a method’s behavior from a test to force the code down a specific path. Mocks are fake methods (like spies) with pre-programmed behavior (like stubs) as well as pre-programmed expectations.

Published under: Code | BSD License

Leaflet is a modern, lightweight BSD-licensed JavaScript library for making tile-based interactive maps for both desktop and mobile web browsers. It is built from the ground up to work efficiently and smoothly on both platforms, utilizing cutting-edge technologies included in HTML5.

Its top priorities are usability, performance, small size, A-grade browser support, flexibility and easy to use API. The OOP-based code of the library is designed to be modular, extensible and very easy to understand.

Published under: Maps | BSD License

DataTables is Data Table jQuery plugin that offfer us to create advanced and flexible data table with slick user interface.

DataTables is a highly flexible tool, based upon the foundations of progressive enhancement, which will add advanced interaction controls to any HTML table.

DataTables Provides many features Including:

Published under: Tables | BSD License | GPL License

elRTE is an open-source WYSIWYG HTML-editor written in JavaScript using jQuery UI. It features rich text editing, options for changing its appearance, style and many more. You can use it in any commercial or non-commercial projects. elRTE has been tested in Firefox 3.5+, Internet Explorer 7 & 8, Safari 4, Opera 10 and Chrome.

Published under: WYSIWYG | BSD License

Polymaps is a display and interaction library for tile-based vector and raster maps using SVG and Javascript. Their intent is to provide a minimal, extensible, customizable, and free display library for discriminating designers and developers who want to use interactive maps in their own projects.

Polymaps provides speedy display of multi-zoom datasets over maps, and supports a variety of visual presentations for tiled vector data, in addition to the usual cartography from OpenStreetMap, CloudMade, Bing, and other providers of image-based web maps

Polymaps can load data at a full range of scales, it’s ideal for showing information from country level on down to states, cities, neighborhoods, and individual streets. Because Polymaps uses SVG (Scalable Vector Graphics) to display information, you can use familiar, comfortable CSS rules to define the design of your data. And because Polymaps uses the well known spherical mercator tile format for its imagery and its data, publishing information is a snap.

Published under: Maps | BSD License

Dygraphs is an open source JavaScript library that produces an interactive, zoom-able charts of the present time series. It is mainly designed to display the dense data sets and enable the users to explore and interpret them. It is a JavaScript Visualization Library.

Published under: Charts | Apache License | BSD License