Linkame allows you to share web links between your smartphone and a web browser. To make this happen, Linkame is based on an Android app for the smartphone and on a http REST api that also renders an small web page to access the links. See more at Pove.es.
A simple Rest API using Slim Framework 3 and ReadBeanPHP 4 written in PHP.
Check source code on linkame api GitHub project page.
An Android application using Visual Studio Community and Xamarin Platform written in C#.
Check source code on linkame app GitHub project page.