Code database/Library

A friend and I would like to know if anybody has a program or knows of one that will allow the saving of code to a database, so it can be used or modified later. We would like to be able to search for a phrase or name to find the code that would work for the next problem. I have seen a couple that only create a hyperlink to a file. I want to be able to search and display the results. Then view the code
Dennis