Thank you for the clarification Oron!
Just to add a couple of notes:
HTML-Kit Tools may contact HTML-Kit site to check for updates (per Preferences > Advanced > Check for Updates), however this is usually triggered by some interaction like selecting "Help > Check for Updates" or going to the plugins page.
If you're seeing any other connections, that would typically come from previewing pages that link to objects on external sites or connecting to FTP servers added by the user.
HTML-Kit isn't doing random weird things but if there are any concerns, all of this can be monitored with a network utility.