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.

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.

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.

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.

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.

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

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.

deBridge is a secure interoperability layer for Web3 that enables decentralized transfers of arbitrary messages and value between various blockchains. Validation of cross-chain transactions is performed by a network of independent validators, elected by and working for deBridge governance. These validators maintain the blockchain infrastructure and each run a deBridge node to sign all transactions that pass through deBridge smart contracts in different blockchains.

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.

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.

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.

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.

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.

Multichain is a cross-chain routing protocol that meets the distinct needs of different blockchains to communicate with each other. Multichain strives to be the ultimate Router for web3.

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

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.

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.

Celer is a blockchain interoperability protocol that provides a one-click user experience for accessing tokens, DeFi, GameFi, NFTs, governance, and more across multiple chains. Developers can use the Celer Inter-chain Message SDK to build inter-chain-native dApps, enabling efficient liquidity utilization, coherent application logic, and shared states.

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.

FogSwap is a DeFi cross-chain privacy protocol that integrates aggregated transactions and a zero-knowledge privacy layer, supports seamless multi-chain exchange, and is committed to building a scalable privacy infrastructure, bridging public and private on-chain activities, and providing users with default privacy protection.

Catalyst is an open-source protocol that provides liquidity between modular blockchains. With Catalyst, any new modular chain can automatically connect and swap with any other chain, including liquidity hubs such as Ethereum and Cosmos.

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.

Router Protocol is a cross-chain messaging protocol that uses a mesh network architecture to facilitate communication between different chains. Router offers a suite of products, including its main application, Voyager, a flexible widget, and an SDK called CrossTalk.

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.

OmniHub is a universal omnichain platform allowing users to interact with various networks via LayerZero. OmniHub users can mint ONFT, NFT on 30 networks and bridge them.

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.

ChainPort is a cross-chain bridge that leverages smart contracts to port tokens between blockchains.

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.

ChainSwap is a cross-chain asset bridge and application hub that enables projects to seamlessly bridge between blockchains.

HAVAH is an interchain platform enabling the free transfer and use of digital assets (FTs and NFTs) across different blockchains. Havah bridges NFTs by validating messages sent to relayers through smart contracts without the need to share specific SDKs or architectures.