Website Downloader - Download source code from any website
Web ScrapBook - A browser extension that captures the web page faithfully with highly customizable configurations.
Offline Pages Pro - Offline Pages Pro is probably the world’s most advanced offline browser.
Archivarix Website Downloader - Website online downloader and Content Management System (CMS) existing site converter.
wpull - Wpull is a wget-compatible web downloader and crawler with WARC and Python/Lua scripting support
A1 Website Download - Download websites to local disk for offline browsing or preserving a website soon going down.