HTTrack - HTTrack is a free (GPL, libre/free software) and easy-to-use offline browser utility.
Web Archiving Integration Layer (WAIL) - :whale2: One-Click User Instigated Preservation. Contribute to N0taN3rd/wail development by creating an account on GitHub.
GNU Wget - GNU Wget is a free software package for retrieving files using HTTP(S) and FTP, the most...
ArchiveBox - The open-source, self-hosted internet archiving solution
WebCopy - Cyotek WebCopy is a free tool for copying full or partial websites locally onto your harddisk for offline viewing.
Kiwix - Kiwix enables you to have the whole Wikipedia at hand wherever you go!