Throughout my IT career i have seen many application development projects but most applications would not have survived more than 5 years until they got replaced by a new one. So I was quite pleased to find this success story about a software that is still being used by a company i once worked for and I was even one of the initial application architects of that application. Looks like this application made its Return On Investment.
This project was launched in 1994 as a solution for handling the transport activities. The full story can be found here.