There are 2 repositories under 3d-annotation topic.
A curated list of awesome data labeling tools
Xtreme1 is an all-in-one data labeling and annotation platform for multimodal data training and supports 3D LiDAR point cloud, image, and LLM.
AnnotationTool to create multi-view annotations for the JARVIS 3D Markerless Pose Estimation Toolbox
PCD annotation processing and guideline based on Semantic Segmentation Editor