I had worked on lot of projects.
Some of them which is i am going to describe.
1st one that is FAMS (Foison Accounting management system ) which is basically accounting software just like tallly . This project is made in .Net C# Sql Server. and it has two versions windows based and web based.
2nd one is my bill book which is just like billing software which mange the us billing system.
I had also Created some windows based cleaner and antivirus software as well.