If you are an application developer and love exploring new horizons, the chances are that you have already been bugged by the euphoria of iPhone application development. If so, grab Applitude and start developing your next iPhone application on a domain-specific language built for iPhone only.

As a domain-specific-language, Applitude provides commonly used elements as familiar expressions that you can use to generate/ maintain efficient and modular code.

Applitude comes with a language reference and a GHUnit test suite and provides simple wizard to help you get started with your new projects.

VM FormValidator is a JavaScript form validation script based on MooTools. It aims to provide simple, reliable validation for all form element types across all browsers in an unobtrusive manner.

It is 100% style-able via CSS and allows for custom validations and error messages. Error messages can be displayed above the form, above each input, or below each input.

VMFormValidator should not be used as a replacement for server-side validation (using PHP, .NET, etc) because JavaScript can be disabled.

Gartner predicts that the demand and development of open-source Business Intelligence tools will grow five times through 2012. The adoption of open-source tools for reporting and business intelligence is understandable as modern businesses require interactive tools for processing and analyzing data. They need dashboards, information portals and dynamic visualizations that they use to view quick overviews, drill-down information, compare data, and manipulate information.

For web developers and designers, there are a lot of opportunities to learn experiment and develop web applications and portal that use business intelligence (BI) tools. For developers who want greep new opportunities, here is a list of open source business intelligence tools that they can study and experiment with.

Free & Open Source BI Tools

SpagoBI

Supported by Engineering Group, SpagoBI is a complete open source BI solution available under GNU LGPL License. SpagoBI offers comprehensive features that can be used to develop enterprise level applications for reporting, analytics, dashboards and KPIs.

It supports OALP engine for analysis, charting controls for graphical representation of data, geographical engines for managing geographical data and several other useful features for managing/publishing documents and monitoring processes.

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Scrumblr is a web-based simulation of a physical agile sprint board that supports real-time collaboration. It is built using node.js, websockets (using socket.io), CSS3, and jQuery.

Scrumblr works on up to date Chrome and Firefox browsers. Enable websockets for optimal performance.

Got a lot of content to manage in a limited browser space? Try Smart Paginator!

Smart Paginator is free jQuery plugin for pagination that you can use to paginate large amounts of data or content without sacrificing your design and user experience. You can integrate SmartPaginator is any web application and style it according to your design scheme. All the navigation logic is built-in to the code and can be modified and controlled with simple parameters.

Writing clean and efficient CSS is something that most Web designers and developers would want to sleep over. Fortunately, now we there are a number of good online CSS generators that take care of CSS while you focus on your design.

The CSS3 Generator is a simple and free web application to generates CSS3. You can use CSS3 Generator to control a number of CSS3 attributes like:

• border-radius
• box-shadow
• background-gradients
• opacity

The interactive interface allows you to use dragging sliders to set your preferences and get the desired CSS3 code.

Website developers that work in various industry verticals understand that there is no universal architecture for websites. Each industry requires a different set of unique requirements and features. Same is the case with government websites that require a number of essential features of security, reliability, and compliance rules such as Section 508.

OpenPublic is an open source content management system based on Drupal and tailored for building websites for government.

Powered by a strong community of users and developers, OpenPublic is a ‘one-in-all’ solution for developing a complete government website in easy steps.

D3.JS is a small, free JavaScript visualization library for manipulating HTML documents based on data. D3 can help you quickly visualize your data as HTML or SVG, handle interactivity, and incorporate smooth transitions and staged animations into your pages. You can use D3 as a visualization framework (like Protovis), or you can use it to build dynamic pages (like jQuery).

D3 is not a traditional visualization framework. Rathser than provide a monolithic system with all the features anyone may ever need, D3 solves only the crux of the problem: efficient manipulation of documents based on data. This gives D3 extraordinary flexibility, exposing the full capabilities of underlying technologies such as CSS3, HTML5 and SVG. D3 is extremely fast, supporting large datasets and dynamic behaviors for interaction and animation.

Kern.JS is an easy to use script that gives your more control on how the text in presented on your web pages. It gives you a graphical interface for controlling properties of the text without having to write long CSS code. All you have to do is adding lettering.js to your page and start kerning the text.

Popcorn.js is an open source HTML5 video framework that provides a simple API for synchronizing interactive and immersive content.

Popcorn.js utilizes the native HTMLVideoElement properties, methods and events, normalizes them into an easy to learn API, and provides a plugin system for community contributed interactions.

Popcorn also offers a plugin factory. Popcorn plugins are a way for developers to wrap functionality that responds to a point in a video.