I love the GNU readline library, but since it is under a GPL license, I can not use it for commercial software. Do you know alternatives ? I only need the commandline history and auto completion (of customer keywords and files) features. I found this link :

http://github.com/antirez/linenoise

which seem to be a good starting point, but does not have auto completion.

Any suggestions, surely this must be a common task for people building interactive shell commands.