Softros LAN messenger - LAN messenger for an internal office chat for home or business users. It does not require a server and is very easy to install and use. It supports personal chats, group chats, message brodcasting, files transfer and remote desktop access.

Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.

MyChat - Secure instant messenger for any network

Seald - Keep your conversations secure, everywhere.

BORGChat - BORGChat is a LAN messaging software program.

ProtonMail - Secure email with absolutely no compromises. Get your free encrypted email account today.