Aptos (APT) vs Sui (SUI)

Aptos is a layer 1 blockchain designed to host smart contracts and operates on a Proof of Stake (PoS) consensus mechanism. Developed by former engineers from Diem, Facebook's failed attempt in the cryptocurrency world, Aptos reuses some technological innovations; the Move programming language, an advanced consensus method (AptosBFT), as well as "Block-Software Transactional Memory" (Block-STM), a technology that brings modularity and parallelization in the verification and validation of transactions.

Sui is a layer 1 blockchain designed to host smart contracts and operates on a Delegated Proof of Stake (DPoS) consensus mechanism. Following the failure of Facebook's Diem project, some of the engineers came together to form Mysten Labs. The technology of Sui incorporates some technological innovations from the project, including the Move programming language and a modular and parallel architecture that allows for the simultaneous processing of a very large number of transactions.