Public-domain software
![Creative Commons Public Domain Mark, indicates works that are in the public domain](/Images/godic/202502/05/Cc-public_domain_mark_white.svg2841.png")
![WTFPL license logo, a public-domain-like license](/Images/godic/202502/05/WTFPL_logo.svg2841.png"){kind=logo}
![CC0 license logo, a copyright waiver and public-domain-like license[30]](/Images/godic/202502/05/Cc-zero.svg2841.png")
Public-domain software is software that has been placed in the public domain: in other words, there is absolutely no ownership such as copyright, trademark, or patent. Software in the public domain can be modified, distributed, or sold even without any attribution by anyone; this is unlike the common case of software under exclusive copyright, where software licenses grant limited usage rights.