Check out these new altcoins offering free new coins upon sign up!

WCX (https://ico.wcex.co/)

WCX aims to be a low cost digital currency exchange with potential 10x lower fees to focus on customer satisfaction by creating superior user experience.

Key Dates
Sep 1, 2017: Private Beta Launch. 5,000 people from 30 different countries will be selected for the WCX Beta Program.
Oct 10, 2017: Launch. WCX opens its doors to the public.
Oct 31, 2017: ICO begins. During the ICO (Initial Coin Offering), you’ll be able to buy WCX Tokens with BTC or ETH. This is the only time WCX tokens will be issued and sold by WCX.

CoinStarter (https://coinstarter.com/index)

An amazing idea taking the Kick Starter crowdfunding concept by using Altcoin instead. No wonder they call it "Powering the future of coin based fundraising".

SwiftDemand (https://www.swiftdemand.com/)
Swift Demand is a basic income experiment. Each user who is signed up for the service receives 100 coins each day. No additional coins can be created with time or resources.

Bitcoin is decentralized Peer to Peer currency. SwiftDemand is centralized currency focused on the concept of basic income as the primary source of the coins. They are both online currencies, but have different goals and ideals.