From Wikipedia, the free encyclopedia.
A hacker community is a group of programmers who share code, exchange improvements and teach one another "tricks" or better methods or writing. "Hacking" in this sense does not have anything to do with illegal computer activity; instead it connotes clever and useful solutions to legitimate computer problems. (See: Hacker (Brilliant Programmer))
People contribute to such a community for various reasons, like making useful contributions where they can, wanting to replace proprietary software with open code, or being a part of a larger group.
The Internet plays a key role in hacker communities; it allows people from around the world to collaborate on a project.
In a sense, Wikipedia can be viewed as a hacker community.