DotNetNuke: DNN is the leading Web Content Management platform (CMS) for the Microsoft Web Platform. An intuitive interface allows users to easily create new sites or extend existing websites. An open API and nearly 10,000 pluggable apps allow web professionals to create sites for many scenarios. Varn customization: Auto complete search keywords
Open source customized softwares
SiteCore: Sitecore is the global leader in customer experience management that lets marketers owns the experience they deliver to their customers and prospects. We have implemented customized functionality / modules to sitecore with quality.
OsClassifieds: Osclass is your one-stop shop to building your own classifieds marketplace. Create a site with real estate ads, job listings, car classifieds, rentals, or just about anything you can imagine. With dozens of templates, themes and plugins, Osclass is fully customizable.