shareware
noun [ U ] uk/ˈʃeə.weər/ us/ˈʃer.wer/
（购买前供试用的）共享软件
computer programs that you are allowed to use for a short period before you decide if you want to buy them
I've found a really good shareware text editor. 我找到了一个很好的文本编辑共享软件。