HTTrack - HTTrack is a free (GPL, libre/free software) and easy-to-use offline browser utility.
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
WebCopy - Cyotek WebCopy is a free tool for copying full or partial websites locally onto your harddisk for offline viewing.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
GNU Wget - GNU Wget is a free software package for retrieving files using HTTP(S) and FTP, the most...
Bylde - Bylde is a SaaS platform you can use to Start, Manage and Grow your groups and communities.