What are some alternatives?
When comparing Bopup IM Suite and Ruler, you can also consider the following products
LAN Messenger - LAN Messenger is a decentralized UDP IM-style chat client which supports usernames...
MailHog - MailHog is an email testing tool inspired by MailCatcher, but easier to install.
BORGChat - BORGChat is a LAN messaging software program.
Feem - Share files offline. No servers. No cloud. No limits.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Winpopup LAN Messenger - Winpopup LAN Messenger is a cost-effective Office, Corporate, Enterprise Instant Messaging solution.