Auto Reload is a Blender add-on that keeps external files in sync while you work. It watches for images, movie clips, libraries, sound files, and cache files that have been modified outside Blender, and reloads them inside the current blend file automatically. A timer runs the check every n seconds, so changes made in another application show up without a manual reload.
Control sits in a menu on the right side of the topbar. A stopwatch button activates or deactivates the timer, and a popover lets you select which file types get reloaded.
The add-on is compatible with Blender 4.2 LTS and newer and is released under the GNU General Public License v3.0 or later. Version 3.1.2 prevents images with the type GENERATED and a filepath from being reloaded, which fixes an issue with baked ucupaint maps. It is listed here as free.