Annotate - Annotate (formerly know as Glui) is the simplest way to capture, annotate and share screenshots.

Annotate Screen - Browser based annotation tool.

Glui - glui - GLUI is a GLUT-based C++ user interface library which provides controls such as buttons, checkboxes, radio buttons, and spinners to OpenGL applications. It is window-system independent, using GLUT or FreeGLUT.

Roboflow Annotate - Annotate images with ease. Export to any format.

Datatang.ai - Datatang provides off-the-shelf AI training datasets, on-demand data collection & annotation solutions that power the world's most innovative artificial intelligence.

marker.js Live - marker.js Live is a companion library for marker.js 2 enabling dynamic representation of image annotations.