ABCdatos

In a nutshell: You don’t want robots wasting your resources and slowing down your site if they don’t give you some kind of direct or indirect benefit. An optimal configuration will maximize your SEO results and reduce your operating costs.
You’ll need less than a minute to set your site characteristics and get a customized robots.txt configuration installed, matching your needs and easily updated without headaches. Let us to apply our experience in maintaining and optimizing sites. A clear knowledge of what we want to do and why, moved us to change the decission method from human created robots.txt to an automated system, things are simpler as they seems. Here comes to help this plugin, doing all the magic for you.
Some of your site specs will be automatically detected to reduce the manual config needs to the minimum. A few simple questions about your site will be enough to vast majority of sites.
<h3>Update procedure</h3>
Any change required to the robots.txt is applied in real time when operating in virtual file mode. If you are working in real file mode, after updating the plugin version you should click the Save Changes button in the configuration screen to regenerate the robots.txt file.

Magic robots.txt

This plugin automatically creates a robots.txt analyzing your site to improve your Google ranking and site performance.

Robert Peake

Adds a Google No Captcha ReCaptcha checkbox to your WordPress and Woocommerce login, forgot password, and user registration pages. Denies access to automated scripts while making it easy on humans to log in by checking a box. As Google says, it is “Tough on bots, easy on humans.”

Login No Captcha reCAPTCHA

Great plugin but really needs wildcard support for "Whitelist IP" setting. Many ISPs change IP addresses constantly, so it's a pain to have to always go in and manually add another IP address to the list. I posted a support topic asking for wildcard support about 10 months ago, but zero replies from the plugin developer.

Wildcard support would change my rating to 5 stars easy.

Otherwise I'll eventually fork this plugin and add the wildcard myself (it's trivial to do).

Thanks to the developers for this great plugin.

Needs wildcard support

Simple recaptcha for admin login

Adds a Google No Captcha ReCaptcha checkbox to your Wordpress and Woocommerce login, forgot password, and user registration pages.

Magic robots.txt vs Login No Captcha reCAPTCHA