Web Book a free Windows-only software that helps you read web pages, Wikipedia articles and blog feeds offline.
Unlike other offline browsers (wget or httrack) which simply mirror web content, Web Book can download and also convert web pages into formats like plain text, HTML, PDF, etc.
You can set Web Book to auto-run at any time of the day to make archived copies of websites and RSS feeds. Webaroo is similar but requires more effort.
This application can therefore be useful for people who want to read web pages / blogs on their mobile phones or eBook Readers while on the go. Just sync your device with the PC before leaving and read the content anywhere.