Konstant Infosolutions uses the latest open source technology to keep e-commerce websites running smoothly for managed clients. This web design firm mostly serves merchants in North America. By relying on free development tools, this company saves a lot of money and time. For example, PHP scripts could be readily deployed on the back end of a custom website that's optimized for e-commerce. As an open source syntax, PHP does not require developers to pay any fees for integration. Similarly, the programmers at Konstant Infosolutions use Objective-C, C++ and ASP.NET to build the foundations of online stores that work well on PCs and macs. In today's mobile-crazed world, it's important for merchants to optimize websites for iOS and Android, which are operating systems that dominate the smartphone niche. Apple Pay and Android Pay should be set up on any mobile-friendly online store. Vendors should also consider using PayPal and Google Wallet to process payment from mobile users.