Diff between Licenses?

There're some licensing schemes around, I know the Commercial and Public Domain ones, but others are not easier to clarify, even I googled it...

Do anyone have simpler explanation about this?

GPL (seems somehow restrictive..)
LGPL (really don't know what "lesser" means)
GLPL (I think it's library related)
MIT (don't acctually know this but)
MPL (which Mozilla belones...)
Zlib/PNG (don't understand either..)

I don't understand them, those words in quote is only a "guess"...

I looked into GPL and LGPL the other day, was curious about a library that was GPL. What I found out was that a library that is LGPL you can use to create a commercial game, but one that is GPL you cannot. Basically what you make with the library must also be GPL or open-source. With LGPL it's only the additions you do to the library itself that need to be open-source.

There is one exception. The owner of the GPL library still holds the copyright to his/her code, so she can actuallly grant you use of the code under a different license (possibly for a fee).

With either one I believe you're free to do in-house development, as long as you don't make your program available to the public.

If you really want to get confused you should look into the Creative Commons licenses too. :-)

Ragnar

Here you go.

Why? Creative Commons is easy! It's lets you 'build your own' license to suit your specifications. Brilliant.