The Best STARK Alternatives in 2026

EverRise develops bridging and security applications for DeFi protocols across BNB Chain, Ethereum, Polygon, Fantom, and Avalanche.

HAPI uses cross-chain smart contracts to add security functions to decentralized finance products.

InstaDapp develops DeFi tools, including the Fluid protocol and Avocado wallet for account and smart contract transactions.

Three Sigma audits blockchain code and DeFi systems, reporting security findings and services for Web3 projects.

Trail of Bits publishes security reviews, research, open-source tools, and talks covering software, blockchains, and AI systems.

Sigma Prime audits smart contracts, zero-knowledge systems, blockchain infrastructure, and off-chain code, and publishes security research.

Ouroboros Capital presents Yuzu Money yield products, including tokenized real-world asset yield and curated DeFi strategies.

Steakhouse Financial builds on-chain stablecoin and yield products, including curated Morpho vaults and white-label platform offerings.

Zellic provides security assessments for emerging technologies, using offensive security research to identify software vulnerabilities.

Immunefi connects crypto projects with security researchers through smart contract and crypto bug bounty programs.

Sherlock offers Web3 security audits, contests, AI analysis, and bug bounties for smart contract projects.

FailSafe builds continuous security testing systems that probe applications, APIs, infrastructure, and AI systems for exploitable issues.

Rekt publishes investigative journalism and commentary on crypto incidents, with a ranked archive of major blockchain losses.

OtterSec audits blockchain systems, including layer-one networks, wallets, DeFi protocols, bridges, and related infrastructure.

Chainalysis provides blockchain data and intelligence tools for investigating illicit activity, managing risk, and preventing crypto fraud.

CoinStats tracks crypto portfolios across coins, exchanges, wallets, and blockchains, with tools to buy, swap, and stake assets.

Hexens audits blockchain systems and offers continuous threat exposure monitoring, alongside research on smart contract platform vulnerabilities.

Splunk for Blockchain helps monitor blockchain systems by collecting and analyzing onchain and offchain data.

BlockSec Phalcon detects blockchain attacks and sends alerts to protocols, liquidity providers, traders, chains, and exchanges.

TRM Labs provides blockchain intelligence for investigating illicit activity, managing risk, preventing fraud, and securing protocols.

RockawayX invests in Web3 ventures and provides blockchain infrastructure, liquidity, and engineering support for protocols and founders.

OpenZeppelin Defender is documented within the official OpenZeppelin library and tools documentation.

Each Ethernaut level requires hacking a smart contract in the Ethereum Virtual Machine through a Web3 and Solidity wargame.