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Donationware (DonateWare) is software that is free to use, but encourages users to make a donation to the developer. Some donationware programs request a specific amount, while others allow users to determine what the program is worth and send in an appropriate donation. Unlike shareware, which may provide limited functionality until a registration key is purchased, donationware is fully functional. Therefore, donationware is more similar to freeware, which is free to use, but retains the author's copyright.
Some donationware programs make subtle requests for donations, such as an option in the menu bar. Others are more blatant, and may prompt you for a donation each time you open the program. This dialog box should disappear once you have made a contribution. Most donationware programs allow you to donate to the developer via a credit card or PayPal account.
If you find a certain donationware application program to be useful, you can be sure the developer will appreciation your donation.
Short:
It is a type of freeware. Iis a licensing model that supplies fully operational unrestricted software to the user and requests an optional donation be paid to the programmer or a third-party beneficiary. The amount of the donation may also be stipulated by the author, or it may be left to the discretion of the user, based on individual perceptions of the software's value.
Permissions:
Private use; Use to create content; Commercial use
Limitations:
Sell or resell; Liability; Warranty; Support; Modify, create derivative works or reconstruct software