Pretty cool! I use the "Retirement Planner" from Personal Capital (like Mint but for investments) Some of the notable features are:

- Adding future income events (social security, pension, etc)

- Inflation adjusted.

- Set future spending goals (buying a house, wedding, health care)

- You can also save different simulations and get a percentage chance of hitting that goal. I have one for if Social Security doesn't exist when I retire, another one for early retirement, etc.

It's free to sign up. https://personalcapital.com/