Label Studio
Label Studio is an open source data labeling tool. It lets you label data types like audio, text, images, videos, and time series with a simple and straightforward UI and export to various model formats.
ZPLDesigner provide a ZPL code editor with syntax highlighting applying different color for commands, parameters, text and comments. The ZPL code can be rendered using a local Zebra printer or by using the labelary.com webservice, and saved. It features variable substitution, automatically shows documentation about the ZPL command being edited, and can write ZPL code from a wizard.