- Dash was the first crypto with protocol level privacy
- Dash invented masternodes
- Dash invented the treasury system
- Dash invented the much needed decentralized governance system
- Dash invented sporks
- Dash invented X11
- Dash invented Dark Gravity Wave
- Dash was the first PoW coin with instantly confirmed transactions
- Dash is the first DAO
- Dash invented Chainlocks which prevent 51% attacks

You can get more info here: http://www.dashroadmap.org/dash-roadmap-now/