robpannell

From the plugin admin screen you can create rules by specifying a key word or phrase along with an existing 
WordPress category. Th plugin then scans post titles for the key, and adds the specified categories as appropriate. 
By default the plugin will automatically check newly created posts when a page is loaded, however this can be set to manual via a button in the admin screen.
I can’t guarantee any support, but if you use the support forum I will do my best to help you with any issues. 
Feel free to suggest improvements too.

Smart Categories

This simple plugin adds categories to posts based on key words or phrases in the title.

artwhere

Introducing Taxoclean, the ultimate solution for streamlining and optimizing your taxonomy management! This powerful plugin is specifically designed to assist you in effortlessly cleaning up your taxonomies, ensuring a well-organized and efficient content structure on your website.
With Taxoclean, you’ll have the tools you need to effortlessly identify similar terms within your taxonomies and merge them together. No more confusion or duplication of terms! By consolidating related terms, you can enhance the clarity and consistency of your taxonomy, making it easier for both you and your visitors to navigate and find the information they need.
But that’s not all! Taxoclean goes above and beyond by helping you address orphaned terms. It intelligently detects terms that have no associated posts and allows you to take action. Whether you choose to delete these orphaned terms or reassign them to other relevant terms, Taxoclean ensures that your taxonomy remains lean, precise, and optimized.
Not only does Taxoclean support the cleaning of traditional taxonomies such as categories and tags, but it also extends its capabilities to handle custom taxonomies. This means that regardless of the specific taxonomy structure you have implemented on your website, Taxoclean is there to assist you in maintaining its integrity and improving its overall organization.
Say goodbye to cluttered taxonomies and hello to a streamlined content classification system with Taxoclean. Let this remarkable plugin empower you to effortlessly manage and optimize your taxonomies, making it easier for both you and your website visitors to explore and discover the content they desire.

Taxoclean

The ultimate solution for streamlining and optimizing your taxonomy management

Smart Categories vs Taxoclean