phpScenario is an object-oriented and open source PHP library for implementing simple A/B testing with as little code as possible but still being powerful.
Default tests can be ran with only a single line of code and results are rendered XML-based (HTML via included XSL stylesheet).
The library supports PDO and Zend Framework DBALs. Also, it has various options for running more customized tests like using identifiers other than PHPSESSID.
Signature Pad is a jQuery plugin which transforms an HTML form into a canvas where users can draw their signatures.
The signature submitted is stored as a JSON array which makes re-generating it possible.
And, the plugin doesn't need to be used as its name suggests, you can ask users to draw anything and store it easily.
Delivering content in any media as quickly and easily as possible is a good decision to reach more readers.
iPad, with the popularity it has and being -also- considered as an ebook reader, is definitely one of them.
Baker is an open source HTML5 framework to publish ebooks for iPads with minimal effort.
In order to use the framework, HTML5 pages should be created with a fixed width of 768px.
For a temporary period, files should be named as 1.html, 2.html.. however, developers are working on the HPub format which will be more flexible.
There is a ready-to-use Xcode project provided where you can include the book, a custom icon and submit the final product to the App Store.
Artisan JS is a JavaScript library which focuses on easing in-browser drawing using HTML5 canvas.
It offers simpler and shorter-to-write functions for creating and styling objects.
Most importantly, the library enables using every object like a layer which canvas doesn't have by default. So you can add shapes to a layer anytime.
Also, a stacks feature helps grouping layers to control them better ( here is an article on layer and stack usage).
P.S. Artisan JS is a standalone library that doesn't require an JavaScript frameworks.
Jo is an open source mobile application framework that is based on HTML5 .
It enables you to create for multiple platforms like webOS, iOS, Android, Symbian, Safari, Chrome and Dashboard Widgets.
The framework is small in size, ~8kb, without any dependencies and compatible with many other JS frameworks.
Jo is also compatible with PhoneGap and makes possible to create native apps besides web apps.
It is very well-documented and has sample codes on every level.
elRTE is an open source and feature-rich WYSIWYG editor that is built using jQuery UI.
It performs all standard functions of an editor and has all the extras like undo-redo, advanced table management, creating a custom HTML element with a custom style + inserting it quickly and more.
The interface is controlled via a single CSS file and can be customized pretty easily.
It has a built-in "save" button which can be attached to a JS function that saves the content that is pretty useful for helping users not to lose their content.
elRTE can be integrated with any file manager, however, there is elFinder, a file manager that has ready-to-use integration (can be used standalone too).
Similar to the popular disposible chat websites (check 7 Free Disposable Chat Systems For Instant Communication), Anologue is an impressive one which is open source.
It works by simply clicking on a "new room" link and the application instantly creates a chat room with a unique URL where you can invite others.
The application is totally Ajaxed, built with PHP and uses the Lithium Framework, CouchDB and jQuery.
And, if you don't prefer to install your own, you can still use Anologue as the hosted version is free for everyone.
Nuggetz is a free CMS application for easily and quickly controlling websites where the content is not stored in a database.
It is powered with PHP and integrates with any website design. You can simply make a section of a web page editable by calling a code like $mynugget = new nuggetz("name");.
The application works with modal boxes and, once logged in, the editable sections are displayed like the screenshot above.
You can click to any section and edit it inside a WYSIWYG editor. The content is saved inside the files themselves (just like an HTML file).
Show Slow is an open source tool (and, optionally, a free web-based service) for monitoring website performance metrics over time.
It simply collects the results from YSlow and Page Speed rankings and graphs them to show you how various changes to the website can affect the performance.
And, it can do this regularly to help you see the improvements done within time.
InAppSettingsKit is an open source solution for iPhone app. developers to easily add in-app settings to iPhone applications.
It offers an hybrid approach by maintaining the Settings.app pane, so, user can decide where to change the settings.
The kit can be integrated into any iPhone application easily (but may require tiny updates).
Although the intention of InAppSettingsKit is to create a 100% imitation of the Settings.app behavior, there are few more features provided like "overriding the settings file that is used in-app".
