SEASR's Tag Cloud Viewer With Stemming is a free tool for creating a tag cloud from a text hosted at a URL, and can process PDF documents. While this tool is similar to SEASR's NGram Tag Cloud Viewer, it applies a stemmer to the text during processing.

Though the page for this tool is no longer available on the SEASR website, it can still be viewed via the Internet Archive.

AntWordProfiler is a free tool for word profiling. For each word in a document, it will generate the base form and a list of possible related words, provide statistics and frequency data and list word types. It can also process files separately or as a batch.