Exposure Catalog is a small addon for Exposure.
It adds /exposure catalog command, that will open a GUI where all exposures stored in the current world can be viewed, exported or deleted.
It also has a textures mode, where all loaded textures (from Minecraft, mods and resource packs) can be viewed.
Command requires level 3 permissions (cheats enabled in singleplayer covers that).
Needs to be installed on both client and server.