Lightning Network is an amazing technology built on top of Bitcoin. It allows you to send and receive any amount of Bitcoin within seconds (even incredibly small ones).
Tippin.me is a Lightning Network tip jar.

👉 Sign up now, takes 5 seconds!

We have an amazing extension to tip Twitter users. It automatically adds a lightning icon inside of every tweet! (Note that the receiver must have a Tippin.me account first in order to claim the tip)
👉 Download extension for Chrome & Firefox

You can tip from the extension itself. However, if you want to use Lightning Network, you need a Lightning Network enabled Bitcoin wallet. Here you have a few:

👉 Eclair Wallet (for Android)
👉 bluewallet (iOS and Android)

If you want to learn more about LN, check this:

👉 Lightning Labs
👌 Messari.io