Combine ePub - For easily coalescing your ePub books into a single, SuperMemo-friendly html file
Mathpix - For converting math pictures & screenshots to LaTeX
Image occlusions, quick hooks & more - Script for improving image occlusions inside SuperMemo. Also includes tools for quickly changing the hook, compressing images, etc.
Quick priority - Script for binding Alt+0-9 in numpad to quickly prioritize your elements