captcha alternative 共 2 款外掛
針對常用外掛標籤「captcha alternative」的推薦外掛如下：
Opportify Fraud Protection stops fake sign-ups, form spam, bot submissions, and fraudulent leads on every WordPress form. It works silently, in rea...
Stop spam without collecting visitor data., SOS Captcha protects your WordPress forms with an interactive slider challenge. Visitors drag a handle ...