We have different types of licensing possible for software packages. Many companies going the route of Apache license - a license that allows you to use the contributions of the community without contributing anything back.
Contrast this with the GPL license where if you modified the code and included it in your product you might have to contribute the work back to the community.
Wired has a good article about this.
Contrast this with the GPL license where if you modified the code and included it in your product you might have to contribute the work back to the community.
Wired has a good article about this.