Unlike other sites in this list, Textem also allows you to send free anonymous text messages with pictures.
Visit the site here: 10.
Once you have performed the initial setup, you can log in without your phone and can use the app on many devices at the same time.
The only disadvantage is that their secondary domain server could be done at any moment preventing you from using the service.
This website allows you to send and receive anonymous texts without giving away your identity.
It is free to use.