Portal is the custody-less interoperability protocol for Bitcoin. Portal enables fast, low cost atomic swaps between native Bitcoin assets like BTC, Ordinals, and Runes, to L2s and other L1s. With Portal’s technical breakthroughs, there is no bridging or wrapping.

Axelar is a decentralized cross-chain communication network, aiming to level-up interoperability in Web3 by connecting heterogeneous blockchains and enabling asset mobility and program composability in an optimized way for both builders and end-users. The two layers of Axelar are the network and the API above it. At the core of Axelar is a permissionless overlay network that provides Turing-complete cross-chain communication through proof-of-stake and permissionless protocols. On top of the network are APIs and protocols, an application-development layer that developers use to compose across any number of chains. Once integrated, all new interconnected blockchains become interoperable with the application, resulting in limitless network effects.

Pheasant Network is an optimistic bridge network, inspired by the idea of optimistic rollups. It aims to bring this concept to bridge architecture, in order to address Ethereum's interoperability and scalability challenges.

LI.FI is a bridge aggregation protocol with DEX connectivity and cross-chain data messaging capabilities. All of these functions will be made available on an API/Contract level, and as a widget for other developers to plug directly into their products.

Wormhole is a decentralized, universal message-passing protocol that enables developers and users of cross chain applications to leverage the advantages of multiple ecosystems.

Multiliquid is a cross-chain protocol that allows users to exchange blue-chip RWAs and stablecoins at scale across multiple chains, and it aims to make on-chain liquidity easy.

Sunrise is a liquidity gateway focused on the Solana ecosystem, providing users with a single interface to transfer tokens from its source chain to Solana and instantly access the network's DeFi venues. The project was launched by Wormhole Labs.

Orbiter Finance is a decentralized cross-rollup bridge for transferring Ethereum native assets, providing the infrastructure for Layer 2.In Orbiter Finance, there are two roles they are Sender and Maker. When the Sender initiates a transfer, the Maker provides liquidity for it. The smart contract ensures the security of this process. If the Maker does bad behaviors and the transfer fails, the Sender can initiate an arbitration request to the contract with Maker’s margin and then get the excess compensation.

Echo is a multifaceted protocol specializing in bridging, restaking, and decentralized finance (DeFi), seamlessly interoperating within the Move ecosystem. Its mission is to enhance BTC liquidity and introduce innovative restaking solutions for BTC assets within Move.

Relay is a cross-chain payments system that enables instant, low-cost bridging and cross-chain execution. It works by connecting users with relayers - financial agents that act on users’ behalfs across chains in exchange for a small fee. Relay is designed to minimize gas costs and execution latency, making it ideal for price-sensitive applications, such as payments, bridging, nft minting and gas abstraction. Relay was previously known as Reservoir, a token and NFT trading infrastructure.

Confidential Layer is a decentralized crosschain bridge solution that bridging assets between programmable blockchains like EVM, Solana, and Cosmos, as well as non-programmable blockchains like Bitcoin and privacy-focused blockchains.

Butter Network is an Omnichain Interoperability Hub integrated with ZK technology that enables users with global DAPP accessibility and data availability, building an infrastructure that makes transactions transverse across chain to chain freely and securely.

SWFT Blockchain is a next-generation one-stop cross-chain swap protocol and payment network that offers a mobile wallet with both custodial and non-custodial (decentralized) storage options as well as non-fungible tokens (NFTs) as well as other interesting features like lending and SWFT Pay.

Stargate is a fully composable liquidity transport protocol that lies at the core of Omnichain DeFi. With Stargate, users and dApps can transfer native assets cross-chain while accessing the protocol's unified liquidity pools with instant, guaranteed finality.

Across is an optimistic cross-chain bridge protocol that enables users to execute transactions between chains almost instantly. This is achieved through the use of an optimistic oracle, bonded relayers, and single-sided liquidity pools.

Synapse is a universal interoperability protocol that enables secure cross-chain communication. It connects blockchains by providing an extensible cross-chain messaging protocol that supports assets, smart contract calls, and more. With Synapse, blockchains can securely and easily interoperate with one another, and developers can create truly cross-chain applications, including cross-chain DEXs, lending platforms, margining systems, derivatives markets, yield aggregators, and much more.

Meme Bridge is a cross-chain bridge solution designed to seamlessly transfer memes and other digital assets across different blockchain networks.

PocketFi is a solution for seamless cross-chain token transfers, snipes, copytrading, and much more. It is designed to revolutionize the way user navigate the world of decentralized finance in Telegram as a Mini-App. A new approach that PocketFi brings together with an extensive range of decentralized exchanges (DEXes), innovative bridges, and all encapsulated within a single, user-friendly bot using new tools from the Telegram team. This synergy of technologies allows user to have full control, initiate token swaps, earn on sniping opportunities, and manage multiple wallets.

Comet is an interlink communication protocol between all Bitcoin and Ethereum Ecosystems, designed to provide safe, fast, reliable, and cheap cryptocurrency transfers.

Rango is a cross-chain DEX aggregator that combines the power of DEX aggregators within blockchains with multiple bridges and cross-chain liquidity providers, giving users access to improved liquidity.

Owlto Finance is a decentralized cross-rollup bridge focused on Layer2, providing a low-cost, secure, and fast asset transfer solution.

Kriya is building institutional-grade infrastructure for on-chain trading. The current suite includes an in-app bridge, an AMM swap, and a fully on-chain orderbook for 20x perpetual trading.

Rangers Protocol is the backbone of a Web3 engine for creating immersive Web3 applications. It minimizes the development difficulty for Web3 developers and maximizes the user experience. Rangers Protocol provides comprehensive infrastructures for complex-app development, cross-chain and mass distribution, DeFi features, and more. Through its full EVM-compatibility, strategic partnerships and curated developer tools, Rangers Protocol supports AAA and indie developers for success.

Beyond is a native Bitcoin L1 interoperability protocol, providing the necessary infrastructure for users to securely bridge any token to, from, and within Bitcoin L1.

Ren is an open protocol that enables the movement of value between blockchains. Ren's future is to seamlessly connect blockchains as a Layer 0. Developers will be able to build a single implementation of their application on top of Ren, allowing them access to the entire Multichain world. In February 2021, the Ren development team joined Alameda Research.

Zeroway, built on Hyperlane, is set to use interchain technology, starting with EVM networks and later expanding to the Cosmos and Solana ecosystems. This enables the efficient creation and management of Omnichain NFTs and tokens across various networks.

RuneMine is a Bitcoin infrastructure protocol focused on enhancing Bitcoin’s interoperability with other blockchain networks, primarily Solana. Through its innovative bridging solution, RuneMine empowers users to move Bitcoin-linked assets across multiple ecosystems securely and efficiently.

Brotocol was born to unify the Bitcoin space and connect it with the wider blockchain world. The project is set to link Bitcoin DeFi to liquidity on Ethereum and other ecosystems, providing access to various chains including BRC20, while also being a key piece of the infrastructure needed to have a "native-like” Bitcoin DeFi experience on L1 for BTC holders.

BoringDAO is a DAO-driven cross-chain service provider for every crypto asset. It provides everyone with a cost-efficient experience for pegged token wrapping and asset transfers.

Portal is a bridge that offers unlimited transfers of tokens and NFTs wrapped by Wormhole, without the need for double wrapping or retracing steps.