Viber and Zalo are the top 2 free messaging apps today. But in terms of support on PC, Viber is somewhat superior to
Use Viber on your computer or laptop, if you have English language, follow how to
How to send files via Viber on PC
Step 1: In the conversation interface. Right-click select Send Photo or Send File to send the image or data.
Step 2: Want to delete a sent message. Select Delete for myself.
Step 3: Want to forward a message or file. Right-click and select Forward via Viber.
Above are the basic instructions for users after registering