The Litecoin blockchain is a fork from the Bitcoin chain. It was initially launched in 2011 when its founder, Charlie Lee, was still working for Google. Well-known as a cryptocurrency expert, Charlie Lee is backed by a strong development team who appear to be achieving what they set out to do. They have recently achieved a very notable accomplishment with the first successful atomic swap.

Ripple is a real-time global settlement network that offers instant, certain and low-cost international payments. Launched in 2012, ripple “enables banks to settle cross-border payments in real time, with end-to-end transparency, and at lower costs.” Ripple’s consensus ledger (its method of conformation) is unique in that it doesn’t require mining. In this way, ripple sets itself apart from bitcoin and many other altcoins. Since Ripple’s structure doesn't require mining, it reduces the usage of computing power, and minimizes network latency. Ripple believes that “distributing value is a powerful way to incentivize certain behaviors” and thus currently plans to distribute XRP primarily “through business development deals, incentives to liquidity providers who offer tighter spreads for payments, and selling XRP to institutional buyers interested in investing in XRP.” So far, ripple has seen success with this model; it remains one of the most enticing digital currencies among traditional financial institutions looking for ways to revolutionize cross-border payments.

If I like an ICO, read the white paper, research the founders, google it for hours, and come away with a good vibe, I will put a small amount of Ether (or whatever currency) on it and see where it goes as a long term play. 90% of the time it just ties up money that would have been better spent holding the coin. Further, you can often buy the token cheaper on the open market using a platform like EtherDelta. Further, you can often wait until it is listed on a major exchange and then buy it.

As of November 2017, Bitcoin and other digital currencies are outlawed only in Bangladesh, Bolivia, Ecuador, Kyrgyzstan and Vietnam, with China and Russia being on the verge of banning them as well. Other jurisdictions, however, do not make the usage of cryptocurrencies illegal as of yet, but the laws and regulations can vary drastically depending on the country.
In 1983, the American cryptographer David Chaum conceived an anonymous cryptographic electronic money called ecash.[7][8] Later, in 1995, he implemented it through Digicash,[9] an early form of cryptographic electronic payments which required user software in order to withdraw notes from a bank and designate specific encrypted keys before it can be sent to a recipient. This allowed the digital currency to be untraceable by the issuing bank, the government, or any third party.