TeamLab is an open-source software for business collaboration and project management. It allows you to use social networking tools such as blogs and forums, organize business tasks and milestones, as well as communicate with your team members via corporate IM.

Features

• Create and manage existing projects
• Tasks & Milestones management
• Chat with your colleagues in real-time

TeamLab is written in ASP.NET / MySQL and can be used as a hosted service or its open source alternative allows you to deploy it on your own servers.

jPint is a work in progress iphone web development framework designed to allow developers to build iphone like web-based applications that look and feel as much like native iPhone apps as possible, while retaining the ability for those apps to be used by people who, for whatever reason, don’t actually have an iPhone handy.

Supported Environments:

• iPhone
• Safari and Firefox as a standard web page
• Google Gadgets for the aforementioned browsers

Elastic Lists is an open source tool that allows you to create a faceted browsing interface for navigating large, multi-dimensional info spaces with just a few clicks.

Elastic Lists enhances traditional UI approaches for facet browsers by visualizing:

• Weight proportions
• Animated transitions
• Emphasis of characteristic values
• Sparkline visualizations

Elastic Lists is an AS3 project for use in Flash CS4 or Flex.

WebMatrix is web development toolkit you need to build Web sites using Windows. It includes:

• IIS Developer Express (a development Web server)
• ASP.NET (a Web framework)
• SQL Server Compact (an embedded database)

WebMatrix provides a fresh, new Web site development experience that seamlessly bridges all the key components you need in order to create, run, and deploy a Web site.

WebMatrix takes the secrets out of search engine optimization, provides clear guidance on how to make your site better, and even offers to take you right to the file in your site you need to fix.

dashCommerce, an Open Source ASP.NET e-commerce application focused on providing a robust e-commercce application that is stable and highly usable. dashCommerce is a flexible product that incorporates all three major components of an e-commerce application:

• Product Catalog
• Shopping Cart
• Order Fulfillment

dashCommerce has an enormous amount of functionality with many powerful features including Checkout / Order Management, Inventory Control, Configurable Content Management System and multi-language support.

eCart is an open source shopping cart software that offers the ability to build a powerful & search engine friendly shopping cart.

Shopping Cart Features

• Easy store management
• One page checkout
• Search Engine Friendly
• Advanced Catalog Filters

eCart is build upon Zend Framework (PHP), jQuery(frontend, backend), Ext JS (backend) and MYSQL.

Another version from the family of JW Video players. Longtail released JW Video Player for HTML5 built using jQuery Javascript framework.

The JW Player for HTML5 is a fully skinnable and configurable based on the new <video> tag found in HTML5.

It enables a seamless fallback to the popular JW Player for Flash (Greepit has shared this flash player in its previous post about Best open source video players).

It works fine with all major browsers and capable to play videos on iPhone and the iPad.

P.S. The JW video player is in beta state so you may experience some issues.

Teambox is twitter like project management and team collaboration software. Teambox is a web-based, quality collaboration software with a simple and clean user interface.

Teambox’s overview screen is a Twitter-like feed of activity and updates. You can post updates on a project. Stay in touch with your team all the time, across all your projects, easily.

This project management software supports:

• Multiple projects
• Status updates
• Document attachments

This open source software is written in Ruby on Rails and you can use a hosted version or can download a copy to host your very own.

Miro is an open source high definition (HD) video player with unique, elegant, and seamless user interface that makes watching internet tv and videos easier than ever.

You can watch and organize video feeds when you’re offline or traveling. Miro downloads in HD, whenever it’s available!

You can search and download videos from:

• Youtube
• Google Video
• Hulu
• Blip and many more…

Miro downloads video fast and stores it on your local computer for a level of quality that is often impossible on streaming video websites.

As this open source video player downloads most videos so you can take your shows with you, wherever you go and can see whenever you want.

OSQA is an open source and easy to use social question and answer system that provides wiki-like features and a voting system. OSQA can be used as an interactive FAQ system for websites and web applications.

This open source social networking engine allows you to connect with and follow other people and topics and send private messages to each other.

OSQA can be used as:

• An online forum
• Support / Help desk platform
• Basic project collaboration platform
• Simple Content Management System (CMS)

OSQA supports themes, embedding videos / audio / images and empowers you to import data from your current or old Stack Exchange site.