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CosmWasm

CosmWasm is a secure, performant, and interoperable smart contract platform designed for the multi-chain world, built for the Cosmos ecosystem using WebAssembly and Rust. It enables developers to build smart contracts with improved security and testing compared to Ethereum/Solidity, and is deeply integrated with many Cosmos blockchains via native IBC communication.
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Description

CosmWasm is a smart contract platform built to address the security and architectural shortcomings of Ethereum/Solidity, such as reentrancy attacks and unsafe proxy contract migration patterns. It uses a highly optimized WebAssembly runtime and the Rust programming language to provide type-safe development, comprehensive multi-level testing (unit, integration, and full-stack), and composability of smart contracts, powering projects like Mars Protocol. CosmWasm is deeply integrated into the Cosmos SDK and IBC, allowing developers to compose contracts across multiple connected chains, split transaction load for scalability, and even launch new sovereign CosmWasm-enabled chains. Its primary users are developers and protocols building decentralized applications within the Cosmos multi-chain ecosystem.