Scatter Classic
Scatter is a browser extension that allows you to sign transactions for multiple blockchains and provide personal information to web applications without ever exposing your keys or filling out forms.
NOTICE: Scatter Classic is DEPRECATED!
Do not build apps only for Scatter Classic ( Extension ).
Visit https://get-scatter.com/docs/dev/setting-up-for-web-apps to find out how to make dapps that support Classic, Desktop and Mobile all at once.
If you want more information about this decision please read this article: https://medium.com/@nsjames/the-blockchain-isnt-just-for-web-applications-silly-rabbit-926a4ea5ccd1