HTTrack is a free and open source web crawler and mirroring application that enables users to download websites from the Internet onto their computer. It is often used to create offline copies of websites for personal or archival use. It can download entire websites, including HTML, scripts, images, and stylesheets, as well as FTP and HTTPS websites. It also features a built-in browser for viewing the downloaded website offline. Additionally, HTTrack can be used to automatically update websites and make backups of existing websites. It is written in C and released under the GPLv2 license.
Wget is used for single transfers, not for complete web pages.
Wget is a download manager. HTTrack is a website downloader, which crawls the website and creates a browsable mirror of the downloaded offline.
Wget cannot download complete websites.
Wget downloads individual files, it is not designed to spider/preserve entire websites or their structure.
Discontinued The extension is not compatible with Firefox 57. It still works on XUL-based Firefox forks such as https://alternativeapp.info/software/waterfox/.
It is not a complete site scraper.
Discontinued The extension is not compatible with Firefox 57 or newer. Its successor is https://alternativeapp.info/software/web-scrapbook/. The extension still works in XUL-based Firefox forks such as https://alternativeapp.info/software/waterfox/ and https://alternativeapp.info/software/palemoon/.
Discontinued Last commitment on May 5, 2013. See https://github.com/gildas-lormeau/Scrapbook-for-SingleFile
Discontinued The program is no longer updated. The latest version, 6.1, released in January 2009, can still be downloaded from the official website.
Httrack if for downloading complete web pages.wget is for downloading individual files, only with a thorough knowledge of the command line you will be able to download the complete web page.