Radio Buttons for Taxonomies
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About
Replace the default taxonomy boxes with a custom metabox that uses radio buttons... effectively limiting each post to a single term in that taxonomy.
Security History
What It Does
Radio Buttons for Taxonomies swaps the standard WordPress taxonomy checklist in the post editor for radio buttons, forcing authors to pick exactly one term from a chosen taxonomy per post. This is useful when a hierarchical or flat taxonomy should function as a single-value field rather than a multi-select tag cloud.
Who It's For
This plugin fits sites that want strict single-value classification, such as a news outlet where every article must belong to one section, a real estate site where each listing has one property type, or a job board where positions map to one department. It works best for administrators who are comfortable configuring taxonomies and want to prevent content editors from assigning multiple terms by accident.
Who Should Skip It
If your editorial workflow relies on tagging posts with multiple categories, genres, or specialties, this plugin will actively fight you, since the radio button UI removes the ability to assign more than one term. Sites that simply need to reorder or hide taxonomy terms should look at a lighter UI tweak instead.
The Bottom Line
For a niche utility, Radio Buttons for Taxonomies does exactly what it advertises and its perfect user rating suggests it works reliably for the people who need it. The lack of declared PHP requirements and the thin support history mean you should test it on a staging site before relying on it in production, especially if you maintain custom taxonomies through code. With an overall quality score of 58.24 out of 100, it is a focused tool rather than a flagship plugin, and a strong candidate only when single-term taxonomy assignment is a hard requirement.
Related Plugins
Pick Loginizer when your priority is hardening login security rather than reshaping taxonomy input, which is an entirely different problem.
Choose Custom Post Type UI if you also need to register and manage the taxonomy and post type itself, since this plugin assumes the taxonomy already exists.
Redux Framework is the right call when you need full theme and plugin option panels, not a small targeted change to a single metabox.
Admin Menu Editor is the better fit when your frustration is with the WordPress admin sidebar and dashboard layout rather than taxonomy selection.
Post Duplicator helps when you frequently need to clone existing posts and content, a workflow unrelated to single-term taxonomy enforcement.