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.
Mailtrap - Email Delivery Platform that delivers just in time. Great for businesses and individuals.
MyChat - Secure instant messenger for any network
MailCatcher - MailCatcher runs a super simple SMTP server which catches any message sent to it to display in a...
BORGChat - BORGChat is a LAN messaging software program.
FakeSMTP - FakeSMTP is a Free Fake SMTP Server with GUI for testing emails in applications easily.