Keep visitors returning to your site again and again with this powerful, efficient and easy to use e-card system. Featuring a full administration centre with a simple interface and full banning controls, visitors will enjoy communicating with their friends, bringing you more and more visitors. All of this combined with the flexibility of the open source licence.

Website -> http://www.mywebcards.net/

LimeSurvey is an Open Source Online Survey Tool. LimeSurvey basically contains everything you need for doing every survey with grace. LimeSurvey currently offers: * Unlimited number of surveys at the same time * Unlimited number of question groups in a survey * 20 different question types with more to come * Multinlingual Surveys

http://www.limesurvey.org

OpenLD is an open and free link-directory. Some features are: SEO-friendly urls, a plugin engine and an easy install.

Website -> http://www.openld.com/

ATutor is an Open Source Web-based Learning Content Management System (LCMS) designed with accessibility and adaptability in mind. Administrators can install or update ATutor in minutes, and develop custom templates to give ATutor a new look , and easily extend its functionality with feature modules. Educators can quickly assemble, package, and redistribute Web-based instructional content, easily import prepackaged content, and conduct their courses online. Students learn in an adaptive learning environment.

Website -> http://www.atutor.ca/

Freeway is the most advanced Open Source eCommerce platform and includes an array of features not found in extremely expensive commercial systems. Without having to purchase a commercial system and then paying a developer to build custom installation, Freeway does most of what you need out of the box.

Website -> http://www.openfreeway.org/

Magento is a new professional open-source eCommerce solution offering unprecedented flexibility and control.

Magento was designed with the notion that each eCommerce implementation has to be unique since no two businesses are alike. Magento’s modular architecture puts the control back in the hands of the online merchant and places no constraints on business processes and flow.

Website-> http://www.magentocommerce.com/

AROUNDMe is an open-source PHP-based community web site similar to MySpace. AROUNDMe is the perfect solution for you to bring people together around shared goals, activities and interests to form a shared knowledge network.

http://www.barnraiser.org/software_aroundme.php

WordPress is a state-of-the-art semantic personal publishing platform with a focus on aesthetics, web standards, and usability. What a mouthful. WordPress is both free and priceless at the same time.

http://wordpress.org/

LandShop is a free system for presentation and sales of real estate through the internet It offers – PDF generation on the fly for administrators and visitors – creation of wishlists for visitors that can be sent by email…

Website -> http://www.landshop.gr

jobberBase is a free job listing software which is very suitable for creating a single-industry job board.

Job listings can be posted without an account (1 time approval required per e-mail), users can search for the jobs with an ajax search interface and apply to them.

jobberBase has RSS support for the listings & provides a widget that lets anyone to publish the job listings on any website. Also, all the posts & URL addresses are SEO friendly with mod_rewrite by default.

jobberBase can be a very nice starting point for anyone planning to create a job board. The software has a php-mysql backend and it is open to further development if needed.

This free job listing script is the original code used in jobber (Romanian web & IT related jobs search engine) and then published for everyone’s use and developed frequently.