The source code used to create an add-on is an exclusive copyright of the add-on author, unless otherwise declared in a source code license. Many add-ons on this site have <a href="%(url)s" lang="en">open source licenses</a> that make the source code publicly available for copy and reuse under conditions determined by the author. Most authors choose widely known open source licenses like the GPL or BSD licenses instead of making up their own.
Žórłowy kod, kotryž so wužiwa, zo by přidatk wuwiwał, eksluziwnemu awtorskemu prawu podleži, chibazo je so hinak w licency žórłoweho koda deklarowało. Wjele přidatkow na sydle ma <a href="%(url)s" lang="en">licency wotewrjeneho žórła</a>, kotrež žórłowy kod pod wuměnjenjemi awtora za kopěrowanje a zasowužiwanje k dispoziciji stajeja. Najwjace awtorow daloko znate licency wotewrjeneho žórła kaž GPL abo BSD wuběra, město toho, zo by swójsku činiło.