This GUI (Graphical User Interface) version of the Stanford POS Tagger was developed by Mr. Yunlong Jia, and designed by Dr. Jiajin Xu and Mr. Yunlong Jia.
This tagger automatically assigns part of speech information to each word in the loaded English plain text(s). The result of tagging will be saved after execution by default in the same directory of the source text(s) with the extension *.tag. To tag the texts, you need to choose one of the pre-loaded tagging models after you import your raw texts.
The tagger uses Penn Treebank tag set, which is described in Treebank POS tagset.pdf in the program folder.
Please note that the tool requires Java 1.5+ to be installed before you can analyze any texts.