Apps similar to CleanTalk include ALTCHA, which is free and open source. Other options are Antispam Bee, Cloudflare Turnstile, Akismet and StopForumSpam. You can choose from more than 10 Anti-Spam Tools like CleanTalk for the web, self-hosting, Linux, Mac and Windows.
SpamPatrol provides API and integrations that allow you to analyze messages submitted on your forms to see if they are spam or not. Instead of worrying about block lists, CAPTCHAs, honey pot fields, etc.
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A lightweight (~217 bytes vanila JS at frontend) and privacy-friendly plugin to prevent spam comment in the default commenting system of WordPress. Works instantly. No settings required. No captcha.
This simple addition to the wonderful Contact Form 7 (CF7) plugin adds basic honeypot anti-spam functionality to thwart spambots without the need for an ugly captcha.
Anti-spam plugin blocks automatic spam in comments section. No captcha. Plugin is easy to use: just install it and it just works. Blocked comments can be stored in the Spam area if needed. This can be enabled/disabled via Settings page.
