Out of curiosity what is it? Neither the store link or this one seem to explain. Is it some kind of citations tracking system? A pdf editor? I'm not sure what the features add up to in total.
Zotero Desktop extension allows you to convert any web page into an offline HTML. I found it very stable.
It also has a Word add-on that allows you to insert citations as dynamic Word "fields" linked to items in your Zotero Library, so citations can be automatically kept in sync with your Zotero Library and can be easily converted to different formatting styles.
A common use case is in academia - it helps you track your citations and then output standardised reference lists, which is a pain to do by hand.
Other tools in this space are Mendeley and Endnote.