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Wormhole allows developers to easily build decentralized applications that span the entire blockchain ecosystem. The Wormhole SDK covers a wide range of use cases that makes going cross-chain simple for tokens, NFTs, apps, and other messaging applications. With Wormhole, applications on different chains work better together. It supports multiple runtimes including EVM, EVM+, Solana, CosmWASM, and Algorand.

Econia is a back-end settlement layer developed on Aptos's Block-STM execution engine. It utilizes a Move-native codebase and leverages Aptos for composability and parallelism, offering a suite of extensible features to integrating protocols and market makers. Designed by developers, for developers, and incorporating developer feedback, Econia unlocks the foundational layer of Aptos DeFi, enhancing its functionality and versatility.

Ferum is an on-chain order book on Aptos that stands out for its developer-friendly features. It provides a platform that is easy to navigate and use, making it an ideal choice for developers working with Aptos.