Ok, I want to enhance an open source project that is no longer being developed. Instead of starting from scratch I would like to fix all the problems with the current one. Can I legally sell it after I enhance it? Maybe describe it as a fix/enhancement for the project? thanks
What does the project's license say? For example, Filezilla is licensed under the GNU General Public License (GPL), which says: - You are allowed to sell the software. - You can modify the source code, but if you release the modified version to the public in some way, the GPL requires you to make the modified source code available to the program's users, under the GPL. (There's more about the GPL if you follow those links) The open source project you are interested in may be under a different license from the GPL, so you need to do some research and find out.