HTTrack Website Copier - Website Copier/Offline Browser. Copy websites to your computer. Open Source.
WebZIP - Download web pages or entire web sites, to your hard drive, browse them offline.
RafaBot - Bulk website downloader. Download website from a starting URL, search results.
Power Siphon - Configurable web spider and offline browser. Creates self-extracting EXE files.
NetGrabber - netgrabber can download web contents for offline brows, create chm file for you.
eNotebook - Save web pages into single file for offline browsing, with organizer and editor.
BackStreet Browser - Download web site and browse offline at high speed
WebCloner Professional - Download entire sites,export results into ebooks, folders or archives
WebStripper - Download web sites and browse them offline. Fast, flexible and easy to use
Leech - High-speed offline browser for Windows 95/98/Me/NT/2000/XP