WireMin alternatives

Signal is a cross-platform encrypted messaging service developed by the Signal Foundation and Signal Messenger LLC. It uses the Internet to send one-to-one and group messages, which can include files, voice notes, images and videos.

ADAMANT Messenger is entirely anonymous and private (no phone numbers, contact information collected) messenger powered by blockchain

Threema is the world’s best-selling secure messenger and keeps your data out of the hands of hackers, corporations, and governments. Threema can be used completely anonymously, allows to make end-to-end encrypted voice and video calls, and offers every feature one would expect from a state-of-the-art instant messenger. With Threema Web, you can also use Threema from your Desktop.

Cache Messenger is a chat app that lets you hide messages inside other messages. Keep private text and photo messages hidden from snooping friends, parents & shoulder surfers. Hidden messages never show up in your push notifications so you don’t have to worry when someone is looking at your phone.

First of its kind messenger to seamlessly separate your work & personal messages. Control your distractions whether you are at the office or at home. It's time we manage the information overload era and put boundaries for colleagues, friends and families alike

Ping IM has a strong focus on user privacy and designed to ensure that a message sent is only readable by the intended recipient.