Webrecorder Player is a desktop application for viewing high-fidelity web archives on your local machine, no internet connection required. Webrecorder Player is available for download for OSX, Windows and Linux (experimental).
grab-site is an easy preconfigured web crawler designed for backing up websites. Give grab-site a URL and it will recursively crawl the site and write WARC files. Internally, grab-site uses a fork of wpull for crawling.
WebSite-Watcher is a powerful yet simple website-monitoring tool, perfectly suited to the beginner and advanced user alike. This software places you in complete control over what gets checked, when it gets checked, and even how you are notified.