Neo, Eos and Cardano are open source blockcain technology platforms unable developers to run smart contracts and build decentralized applications. They have a number of differences, form market capitalizations to consensus mechanism. NEO, uses consensus mechanism calls Delegated Byzantine Fault Tolerance. This system uses community voted delegates, who speak up for a group of Neo users. Eos uses very similar consensus mechanism, it calls delegated proof of stake and it also uses a voting mechanism. Cardano uses slightly different proof of stake mechanism. It is calls Ouroboros.
▶️ DTube
▶️ IPFS
Cant go wrong owning all 3.