en.wikipedia.org/wiki/Skype

Skype is a telecommunications application software product that specializes in providing video chat and voice calls between computers, tablets, mobile devices, the Xbox One console, and smartwatches via the Internet and to regular telephones. Skype additionally provides instant messaging services.

www.skype.com/en/features/instant-messaging

Stay connected with Skype instant messaging. IM your friends, catch up with family, or instant message a colleague for free on virtually any device.

support.skype.com/en/faq/FA3271/how-do-i-send-an-instant-message-in-skype-for-windows-desktop

Skype instant messaging makes it easy to keep in touch with your contacts and groups wherever they are. You can share files, photos and contacts, and bring ...

support.skype.com/en/faq/FA34798/how-do-i-send-an-instant-message-in-skype-on-desktop

From the Chats screen, select the person or group you want to instant message. Type your message in the chat window and select the Send send button button.

www.skype.com/en/get-skype

Download Skype for your computer, mobile, or tablet to stay in touch with family and friends from anywhere.

support.skype.com/en/skype/windows-desktop/messaging

Get Skype Messaging support for your Skype for Windows desktop and stay connected with friends and family from wherever you are.

www.skype.com/en/features/video-messaging

Video messaging. Overview; Available devices. Video messaging. Connect face to face, even when you're miles apart. With a video message from Skype, you ...

www.skype.com/en/features

Find out how to use the latest Skype features. From calling to video chats, instant messaging to file sharing, Skype lets you connect your way.

support.office.com/en-us/article/send-an-im-in-skype-for-business-b3aefb9b-dec8-4be8-a1ee-1eab12144d05

Skype for Business instant messaging (IM) is an efficient way to connect with your contacts in real time and on a moment's notice. Less formal than email, faster ...