Glui provides controls such as buttons, checkboxes, radio buttons, and spinners to opengl applications. it is window-system independent, relying on glut to handle all system-dependent issues, such as window and mouse management. features of the glui user interface library include:

- complete integration with glut toolkit
- simple creation of a new user interface window with a single line of
code
- support for multiple user interface windows
- standard user interface controls such as:
- buttons
- checkboxes for boolean variables
- radio buttons for mutually-exclusive options
- editable text boxes for inputting text, integers, and
floating-point values
- spinners for interactively manipulating integer and floating-point
values
- static text fields
- panels for grouping sets of controls
- separator lines to help visually organize groups of controls
- controls can generate callbacks when their values change
- variables can be linked to controls and automatically updated when the
value of the control changes ("live variables")
- controls can be automatically synchronized to reflect changes in live
variables
- controls can trigger glut redisplay events when their values change
- layout and sizing of controls is automatic
- controls can be grouped into columns
- user can cycle through controls using tab key