Brother told me about a lan chat software that he wrote.
Details
There was no internet in his office and most of the communication used to happen through the internet chatting softwares. Since net was down, but lan was up, brother decided to write a software that could ‘talk’ through lan. Within a few hours, everyone in the office was making use of this software and chatting using this. Many people liked this software
Significance: He was a tester and none of the developers in the team did not have the brawns to come up with a solution like that