Type of software that can be downloaded by FTP are.
Freeware, Shareware and Demo ware are downloaded by FTP
Freeware is software that is available for use at no monetary cost. In other words, while freeware may be used without payment it is most often proprietary software, and usually modification, re-distribution or reverse-engineering without the author's permission is prohibited. Two historic examples of freeware include Skype and Adobe Acrobat Reader. There is no agreed set of rights or a license or an EULA which would define "freeware" unambiguously; every Freeware publisher defines their own rules for their Freeware. For instance, redistribution of Freeware by third-parties is often permitted but there is a significant portion of Freeware which prohibits redistribution.
Shareware is software that is distributed free on a trial basis with the understanding that the user may need or want to pay for it later. Some software developers offer a shareware version of their program with a built-in expiration date (after 30 days, the user can no longer get access to the program).
demoware. Software that is used to demonstrate a product's features, but has limitations. It will either expire at a set time, or it is limited in functionality. See trialware, crippleware, lite version, shareware and wares.