Customer Facing Applications is business software hosted on your machines customers can use through the internet or mobile networks to interact with your company. Some examples can be found here.
Open Source
It's always a nice start to an application when one can piggy back off existing work. The following is provided to aid Progress ABL programmers with adding functionality to their works or for new works. (It also helps with potential clients understanding the quality and form of our work!)
Dynamic Query Toolkit
This is a SDK that lets the programmer implement Progress ABL dynamic queries in the more familiar static technique. One does not need to be concerned with adding buffers, creating handles, or walking object trees for dealing with queries. See /doc for more manual and examples.
Amduus Classes
These are a collection of classes one can use in programming for handling sockets, email, strings, and some web oriented actions. See the documentation for more information.