TheaterBio is a simple to use online bio and headshot submission system, with easy organization into shows, events, or jobs.

• MySQL 5.7+
• PHP 7.x+
• Apache or similar webserver
• Approx 100 MB of space for web files + caches (Headshots are extra! Depending on the number of users, you may need quite a lot more!)
• A shared or unique MySQL database

So, this uses the basic auth from CakePHP - and adds very little functionality beyond user management. Why might this be better than the really, really nice CakeDC user plugin? Because it is written in user space, and a bit easier to understand. YMMV. But, often when I start a "simple" application like this I wish somebody had a basic pre-built user framework available I could just rip apart.