There are quite many annotation tools out there, however it seems like every tool comes with unique disadvantages ;). Anyhow, here is a list of tools I came across.

last update: 12/13/2019

Computer Vision

• Alturos.ImageAnnotation
  • Yolo type annotations
• annotation_tools
  • COCO keypoint annotations for images *seems to be defective**
• BeaverDam
  • bounding boxes for videos
• Boobs — YOLO BBox Annotation Tool
  • fast bounding boxes for Yolo, Pascal VOC and COCO
• CVAT (Computer Vision Annotation Tool)
  • aims at annotation of bounding boxes and segmentation, part of OpenCV
• DeepLabel
  • bounding boxes for images and videos
• FLAT - Facial Landmarks Annotation Tool
  • annotation tool for facial keypoint annotations
• Image Annotation Tool
  • points and bounding boxes
• imglab
  • annotation tool that allows plugins
• Images Annotation Programme
  • bounding box annotations
• ImageTagger
  • collaborative image labeling originating from RoboCup competitions. Mainly bounding boxes
• JS Segment Annotator
  • JavaScript based image segmentation annotator
• KNOSSOS
  • annotation tool for 3D images
• Labelbox
  • polygon annotation similar to LabelMe but as a desktop software
• LabelImg
  • bounding boxes for PASCAL VOC
• LabelMe
  • underlying annotation tool of the LabelMe platform
• labelme
  • offline fork of LabelMe
• Label-tool
  • bounding boxes and polygons
• MedTagger
  • for annotation of medical (image) datasets.
• OpenLabeler
  • PASCAL VOC bounding box annotations
• OpenLabeling: open-source image and video labeler
  • annotations for object detection and object tracking
• PixelAnnotationTool
  • annotation tool for pixel-level segmentation annotation
• Pixie
  • supports annotation of bounding boxes, polygones and semantic segmentation.
• pose-annotation-tool
  • pose annotations
• Semantic Segmentation Editor
  • supports annotation of bitmaps and point clouds
• turktool
  • bounding box tool for Mechanical Turk
• UltimateLabeling
  • multi-purpose video annotation tool
• VATIC - Video Annotation Tool from Irvine, California
  • video object annotations
• VoTT (Visual Object Tagging Tool)
  • bounding boxes for images and videos with a focus on creating datasets for object motion detection
• Yolo_mark
  • image annotation for Yolo v2 & v3

Point Clouds

• L-CAS 3D Point Cloud Annotation Tool
  • semi-automatic point cloud annotation
• PointAtMe
  • annotating 3D point clouds using VR (Oculus Rift)
• point cloud annotation tool
  • 3D bounding box annotator for point clouds
• RViz Cloud Annotation Tool
  • ROS-based multi-label point cloud annotation tool
• Semantic Segmentation Editor
  • supports annotation of bitmaps and point clouds

Text

• annotator
  • annotation library of every website. could be utilized for machine learning text annotation as well
• brat (brat rapid annotation tool)
  • text annotation tool
• doccano
  • text annotation tool
• ML-Annotate
  • standard text annotation tool
• Poplar
  • web-based text annotator
• TagEditor
  • text annotation for SpaCy
• YEDDA: A Lightweight Collaborative Text Span Annotation Tool
  • collaborative text annotation

Other Data Types/Applications

• CrowdCurio Time Series Annotator Library
  • time series annotation
• Curve
  • annotation of time series anomalies
• Franklin
  • DNA sequence annotations
• TagAnomaly
  • annotation of time series anomalies

附录：

语义分割数据标注工具汇总

（1）Label Me - https://github.com/CSAILVision/LabelMeAnnotationTool)

（2）js-segment-annotator - https://github.com/kyamagu/js-segment-annotator

（3）VGG Image Annotator - https://gitlab.com/vgg/via/

（4）Image Eraser - https://github.com/AKSHAYUBHAT/ImageSegmentation

（5）coco-annotator - https://github.com/jsbroks/coco-annotator