Before revision: Examples of web crawlers used for web archiving include: Heritrix HTTrack Wget There exist various free services which may be used to archive web resources "on-demand", using web crawling techniques.
After revision: and WAILExamples of web crawlers used for web archiving include: Heritrix HTTrack Wget There exist various free services which may be used to archive web resources "on-demand", using web crawling techniques.