3 simple Blender addons in one repository.
While Blender allows the user to draw annoations in different colors, the UI is very obscure. This addon provides extremely simple UI for this purpose:
It's mostly for handling model imported by DazToBlender.
The most noticable feature is Reposition Bones. Daz's model has tons of shapekeys (morphs), so the armature can be displaced after applying shapekeys. This will fix it. (Not very accurate for facial bones, so be careful.)
Add ping-pong and play-to-the-end to Blender's animation system.