This really depend on your requirement. Many of our clients want to fully own the source code of their project, this could be for many reasons, like security, performance or patent and copyrights.. you will likely want to have it written from scratch but if not we can also start from any existing solutions..
OrNsoft teams has an extensive knowledge of other proprietary and open source solutions on the market. We never reinvent the wheel when there is a tool that is suitable for solving a problem, if there you can be sure we will give you the option. But in any case, we always program from scratch the parts that make your project custom and valuable.