Bitcoin Unlimited is described as 'fork of the Bitcoin Core client, giving the miners and users the opportunity to determine the block size limit themselves' and is an app in the Bitcoin & Cryptocurrency category. There are more than 25 alternatives to Bitcoin Unlimited for a variety of platforms, including Windows, Linux, Mac, Online / Web-based and Android. The best alternative is Bitcoin, which is both free and Open Source. Other great apps like Bitcoin Unlimited are Litecoin (Free, Open Source), NameCoin (Free, Open Source), Dogecoin (Free, Open Source) and Golem (Free, Open Source).
Bitcoin is a peer-to-peer digital currency. Peer-to-peer (P2P) means that there is no central authority to issue new money or keep track of transactions. Instead, these tasks are managed collectively by the nodes of the network.
Cardano is a decentralised public blockchain and cryptocurrency project and is fully open source. Cardano is developing a smart contract platform which seeks to deliver more advanced features than any protocol previously developed.
Zcoin strives to increase individual liberty. By guaranteeing financial privacy, Zcoin can help ensure freedom of commerce. People should be able to transact however they want, as long as it does not infringe on the well-being or individual liberty of others.