Ethereum is a smart contract platform that enables developers to build tokens and decentralized applications (dapps). ETH is the native currency for the Ethereum platform and also works as the transaction fees to miners on the Ethereum network. Ethereum is the pioneer for blockchain based smart contracts. Smart contract is essentially a computer code that runs exactly as programmed without any possibility of downtime, censorship, fraud or third-party interference. It can facilitate the exchange of money, content, property, shares, or anything of value. When running on the blockchain a smart contract becomes like a self-operating computer program that automatically executes when specific conditions are met. Ethereum allows programmers to run complete-turing smart contracts that is capable of any customizations. Rather than giving a set of limited operations, Ethereum allows developers to have complete control over customization of their smart contract, giving developers the power to build unique and innovative applications. Ethereum being the first blockchain based smart contract platform, they have gained much popularity, resulting in new competitors fighting for market share. The competitors includes: Ethereum Classic which is the oldchain of Ethereum, Qtum, EOS, Neo, Icon, Tron and Cardano. Ethereum wallets are fairly simple to set up with multiple popular choices such as myetherwallet, metamask, and Trezor. Read here for more guide on using ethereum wallet: How to Use an Ethereum Wallet
Released to the public in 2014, Reddcoin is a decentralized social cryptocurrency that allows anyone to instantly send & receive RDD (its native cryptocurrency) payments on social networks with no transaction fees. It’s essentially the blockchain version of Venmo, Facebook Money, or Snapchat's Snapcash, all of which allow you to easily transfer money to friends and family via their respective social media platforms. However, unlike these major social media networks that require you to use their native platform to send and receive money, Reddcoin allows you to seamlessly integrate its payment features on multiple platforms like Reddit, Facebook, Twitter, and more. Reddcoin is a social cryptocurrency that can be integrated with many different social media platforms for sending/receiving money with zero fees. It’s a peer-to-peer open-source cryptocurrency forked from Litecoin. It dedicates much of its efforts to facilitate the “tipping” of small amounts of RDD on social networks, done in a similar fashion to “liking” a post on FB. The PoSV algorithm is a new take on PoS which encourages both ownership (stake) and activity (velocity). Its tipping system has already been enabled on Twitter, Reddit, Twitch, and Justin.TV. Reddcoin was created on January 20, 2014, as a PoW cryptocurrency. On February 2, 2014, after raising $100,000 through their Initial Public Coin Offering (IPCO), Reddcoin was released to the public. On April 29, 2014, they announced that Reddcoin would transition from PoW to PoSV. In 2017, Reddcoin made an official announcement listing their team members, including developers John Nash and Leonard Simonse. In subsequent Tweets, they’ve publicly announced the additions of developers such as Bradley Ploof and James Tweeg. They’ve been active in updating the community via Twitter, but if you’d like to keep informed directly on the teams project progress, check out their GitHub or Trello (which includes the project roadmap).