Todd Nestor

Hercules Recaptcha uses the latest Google Recaptcha API to more accurately determine if users are bots or not. 
If the user is not logged in it will display a Recaptcha for the user to fill out in the comment form. If the user 
disables javascript and is not logged in then comments will fail to submit.
The Recaptcha is also added to the registration page for both multisite setups and single blogs. There are options for 
having it show up on comments and/or the registration page, as well as options for its position on the comment form, and 
which style (Google gives only two options, dark or light).

Hercules Recaptcha

Hercules Recaptcha adds a Recaptcha to the comment form for non-logged in users.  It uses the latest Recaptcha API.

UPDATE 
Now you can set an option in the new settings page (titled “Herc Sentiment” in the admin bar) to auto-approve positive comments, or un-approve negative comments.
Hercules Sentiment Analysis uses PHP Insight (https://github.com/JWHennessey/phpInsight) to determine whether comments, posts, and post titles are positive, negative, or neutral. This will help bloggers respond to readers who have concerns faster (or delete negative comments if necessary), as well as know what sentiment they are portraying with their post titles and content.

Hercules Sentiment Analysis

Hercules Sentiment Analysis adds columns to the comments and posts tables that show the sentiment of the comment, post title, and post content.

Hercules Recaptcha vs Hercules Sentiment Analysis