@jlfranklin mentioned Database SSL Check in https://github.com/backdrop/backdrop-issues/issues/4772#issuecomment-778.... That is a D7/D8 module, and it could of course be ported to Backdrop contrib, but it's only a ~40-line implementation of hook_requirements(): https://git.drupalcode.org/project/database_ssl_check/-/blob/7.x-1.x/dat... ...so I believe that it could be a nice addition to core, as part of #3624.
I've installed the module in Backdrop (simply modifying it's .info file), and this is what it adds:

Recent comments
Is there any input filter around or should the TinyMCE Uploader manually be hooked to be processed by the File Hash or Path module(s)? I'm not aware of any input filter - the...
File hashing uploads made through TinyMCE
Hi. Did you run the site updates (i.e. at /core/update.php) after updating the module? That version includes changes to the database that should provide that setting (Show title) with a...
Viewfield error on updating to latest version
Hi Paucku I'm afraid not. Backdrop Live is just that - live, not recorded as this encourages greater engagement from people who do not wish to be recorded. What we sometimes do is if...
Backdrop Live November 2025