Swarm has solid credentials in web design and app development. This is an IT company that has its main office in New York City. With an entire department that is dedicated to app production, this firm satisfies the demands of clients from diverse niches. For example, retailers often request e-commerce solutions that have mobile-friendly designs. Apple Pay and Android Pay can enhance online shops that list merchandise or software for sale. These virtual payment gateways give smartphone users convenient ways to buy products. Some businesses may also want to get payment apps such as PayPal, First Data and Braintree. Even brick-and-mortar enterprises can benefit from using point of sale (POS) systems that securely process credit cards as well as mobile apps on Android phones and iPhones. The programmers at Swarm can also launch web apps that run exclusively on Microsoft Windows. Such tools have to be encoded with C++, Java, MySQL and other open source syntax.