
GNU Wget
HTTrack
SiteSucker
WebCopy
ScrapBook
Web ScrapBook
Offline Explorer
ArchiveBox
SourceForge
GitHub
GitLab
BitBucket
openDesktop.org
Gitea
Launchpad.net
OSOR
SourceForgeHTTrack - HTTrack is a free (GPL, libre/free software) and easy-to-use offline browser utility.
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
SiteSucker - SiteSucker is a Macintosh application that automatically downloads Web sites from the Internet.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
WebCopy - Cyotek WebCopy is a free tool for copying full or partial websites locally onto your harddisk for offline viewing.
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.