I've added FTV. You might want to look at the description block, it doesn't retain newlines in the content so the info I entered ended up as a wall-o-text.
Tekkit is rather old now and is in its EOL stages - we're not shutting it down, but it's also no longer being maintained in terms of upgrades, so it's probably better remaining unlisted.
Also maybe allow HTML links for servers like ours that use a whitelist system?