From Limit Point Software:Blue Crab Lite is a an app that you use to copy a web site to your computer easily. With Blue Crab Lite you can download all the linked content including HTML, PDF, graphics, video, file archives, etc. automatically. And then you can search or browse the downloaded site without any internet connection.
Starting with a single URL Blue Crab Lite begins traversing the site by following the links on the textual pages it finds, HTML, CSS, etc. Blue Crab Lite does not stray off the domain of the starting URL, so it won't get lost. It knows how to stop because it never downloads the same URL twice, it knows what has alreadty been downloaded.
Completeness. Unique URL finding methods yield very complete downloads compared to other products.
Browse Offline. Downloaded web sites can be browsed offline, because the links in each page have been relinked to point to the proper files now on disk.
Easy to use. Tool tips exist on all user interface items for learning the program quickly.
Protocols. Supports both HTTP and secure HTTPS.
Offsite links. You can allow the app to download resources it finds on other domains, improving the display of pages offline. Select the option "Grab Offsite URLs" in preferences.
Stay in folder. You can restrict Blue Crab Lite to a subset of the given website using the convenient "stay in folder" option available in every grabber window. This restricts the crawl to URLs whose path must begin with the same path as the starting URL.
Subdomains. You can enable Blue Crab Lite to move across "second level" parts of a domain it finds, such as from "www.site.com" to "images.site.com." Select the option "Allow Secondary Domains" in preferences.
Search. The built-in directory search engine displays found files as a hierarchical list that matches the structure of the site, with double-clickable entries to open and view them in the appropriate application.
QuickLook icons. Search results may be clicked for a quick look at the file preview as a small QuickLook icon.
Spotlight index. Use the QuickLook preview window to access the files index of words it contains.
Progress. In addition to displaying detailed progress in a window, Dock badging provides visual feedback of progress when the program is in the background.
Various improvements to the Search window (accessed from the "Grab & Search" menu.)
A QuickLook document preview window has been added to the Search facility. After a search is conducted and search results are presented in the hierarchical view, single click on an item to open the QuickLook viewer. (On Mac OS X 10.4 the preview will simply be the files icon, since QuickLook is only available on Mac OS X 10.5 and above.)
Use the QuickLook window to display the list of words in the current document, sorted alphabetically. This is a method for obtaining a summary of the documents content, taken out of context. (It is the same index used by Spotlight.)
The Search window now searches any document type supported by Spotlight, since it uses Spotlight for text extraction.
The search query of the Search window is placed into the "Find" clipboard so that you can quickly search for the term in the document itself when it is opened in the creator application, provided that application supports the Find clipboard, such as TextWrangler or XCode. (Double click an item in the search results window to open it in the default application for that type of file.)