HTTrack - HTTrack is a free (GPL, libre/free software) and easy-to-use offline browser utility.
bloop - Code-search engine for developers
GNU Wget - GNU Wget is a free software package for retrieving files using HTTP(S) and FTP, the most...
Productivity Power Tools - Extension for Visual Studio - A set of extensions to Visual Studio 2012 Professional (and above) which improves developer productivity.
WebCopy - Cyotek WebCopy is a free tool for copying full or partial websites locally onto your harddisk for offline viewing.
CodePilot.ai - Code search that keeps you coding