Freeware is free, but it may be a lesser version of commercial software with some functions disabled or missing.
Shareware is something like a trial version that they expect you to pay for if you continue to use it.Fooling the search engines has become an art. There may not be any reliable way to search for nothing but freeware. However, some download websites have provisions for this in their internal search engines. Other sites only offer freeware.
- Sometimes it's on the "honor system".
Sometimes it's "nagware" (the software works but you have to click thru a reminder).
Sometimes it expires (stops working and possibly installs a registry entry to prevent reinstallation without paying).