Chainlink is an oracle infrastructure bringing the capital markets onchain and powering the majority of decentralized finance (DeFi). The Chainlink stack provides the essential data, interoperability, compliance, and privacy standards needed to power advanced blockchain use cases for institutional tokenized assets, lending, payments, stablecoins, and more.

LayerZero is an Omnichain Interoperability Protocol designed for lightweight message passing across chains. It provides authentic and guaranteed message delivery with configurable trustlessness, implemented as a set of gas-efficient, non-upgradable smart contracts.

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

Openverse Global is a Layer0 hub network based on blockchain technology. It is based on the existing blockchain technology and proposes the concept of "fully open protocol cross-chain". It will realize "the transmission of value (token/NFT/message) between different blockchains, metaverses and the traditional Internet is as simple as sending email". Openverse has proposed protocol systems such as the "Bitcurrency VRC10 Protocol", "Privcurrency VRC11 Protocol", and "Public Currency Issurance Mechanism, PCIM".

MAP Protocol is the interoperable layer for the Bitcoin network, built upon ZK light-clients. It is the gateway for Bitcoin ecosystem developers and users and the way for different Bitcoin L2s as well as the Bitcoin ecosystem to become interoperable with EVM & non-EVM ecosystems.

Firefly Bridge is a cross-chain messaging and asset transfer protocol that supports interaction between EVM and non-EVM networks. It uses on-chain contract verification and relay mechanisms to achieve cross-chain operations without custody, and provides a unified interface to simplify the development and use of multi-chain applications.

GVNR is a General Message Passing Protocol that enables seamless connection between every compatible chain, peer-to-peer. GVNR is built for all users and especially AI Agents. GVNR enables permissionless universal control of all chains and all assets. GVNR can be deployed to any permissionless or permissioned blockchain, and will be self-deployable by chains, foundations or enterprises that wish to access the widest possible liquidity.

Satoshi Protocol is a cross-chain messaging bridge built on BTC-Light-Node and Chain Abstraction technology.

oooo is a modular omnichain interoperability protocol supporting the Bitcoin ecosystem. Its modular communication protocol architecture ensures the integrity and reliability of data and transactions within the system. This approach resolves blockchain isolation and liquidity fragmentation, boosting capital efficiency and utilization, and ultimately improving the user experience. oooo is pioneering the next evolution in blockchain interoperability by introducing AI Omninet — an intelligent protocol that transforms cross-chain intents into seamless operations.

Hyperbridge is a cryptoeconomic coprocessor for secure, verifiable interoperability powered by consensus and storage proofs. Hyperbridge is the HTTPS of blockchain interoperability, providing developers with onchain and off-chain SDKs for securely sending cross-chain messages (POST requests) and reading on-chain storage (GET requests).

MultichainZ is a cross-chain interoperability protocol acts as a unifying layer, allowing different blockchain networks to seamlessly interact, communicate, and transact with one another.

Stripchain is a cross-chain interoperability protocolallows developers to create commands called intents to perform actions like transferring data between blockchains. Based on a system called stripVM, it will enable applications to communicate and coordinate with different protocols.

Auran is building the first cross-chain Bitcoin protocol based on its own custom L1 built with Cosmos SDK, Tendermint, and a decentralized TSS network. This protocol serves as a liquidity layer, bridging the nascent Bitcoin Layer 2 (L2) ecosystem with the Bitcoin blockchain. It enables users to conduct native swaps, with support for principal metaprotocols such as Runes, BRC20s, and Ordinals. Additionally, the protocol integrates a messaging system that enables cross-chain smart contract interactions within the Bitcoin ecosystem.

Vizing is an omni interoperability environment built on advanced zk technology, provides a faster, more affordable, and safer Ethereum ecosystem roaming experience. Meanwhile, Vizing is a permissionless decentralized network that provides all DApps with the ability to interact with multiple chains by integrating with Vizing.

exSat is a Docking Layer that was built to bridge the gap between Bitcoin’s native layer and a multitude of Layer 2 scaling solutions for the Bitcoin ecosystem. By facilitating direct queries of BTC and ecosystem token balances, exSat enables a seamless flow of assets and information across different networks and Bitcoin Layer 2 scaling solutions.

Glacis is a protocol that empowers developers to simplify, secure, and manage their cross-chain applications. Developers are shifting from single chain to multichain deployments to reach as many users as possible. By leveraging Glacis to aggregate cross-chain General Messaging Passing protocols (GMPs) such as Axelar, Wormhole, and LayerZero — commonly known as bridges — developers gain the ability to define routing and security logic for their cross-chain applications.

IBC is an open-source protocol developed by a global community, funded by the Interchain Foundation. It aims to enhance cross-chain communication's robustness, security, and functionality, maintained and evolved by various organizations.

Zeus Network serves as a crucial permissionless layer, harnessing the formidable strengths of both Solana and Bitcoin, that enables dynamic, secure composability, creating a decentralized ecosystem for seamless user engagement and liquidity interaction. Zeus Network is NOT a bridge. Because liquidity providers on each chain do not receive liquidity back on the other chain, the assets provided on each chain are protected by their respective protocols.

PicWe is a decentralized, trustless, omni-chain liquidity infrastructure enabling seamless, cost-efficient trading across multiple blockchains and liquidity pools.

MailZero is a platform that enables Web2 to Web3 interoperability for Stamp2Earn.The underlying layer that MailZero plans to develop hopes to achieve the vision of true interoperability by connecting all chains, whether they are part of the EVM ecosystem, IBC ecosystem, or other ecosystems. Users will no longer be constrained by whether mainstream protocols support certain chains.

Golden Gate (GGX) is a cross-chain infrastructure protocol, which combines public-private key encryption technology with multi-party computing, enhances the security and integrity of transactions on the Golden Gate protocol, and solves the problem of Layer 1 smart contract platforms in the Web3 field. cross-chain communication and asset liquidity issues. Golden Gate aims to provide a next-generation programmable Layer0 with embedded hybrid virtual machines and advanced DeFi orchestration capabilities.

Sygma is a cross-consensus interoperability protocol, enabling general message passing, asset transfers, non-fungible tokens, and decentralized finance. Evolved from the humble beginnings of ChainBridge, it provides native interoperability between the Ethereum and Polkadot ecosystems.

Paloma is a fast, permissionless, Cosmos-SDK blockchain that securely moves messages between any other blockchains. It is designed for developers who want to manage bi-directional messages between chains in a secure and scalable way. Volume provides blockchain messaging software that is secure, scalable, and enables developers to communicate across multiple blockchains at the lowest cost.

Asterizm is an user application (UA) focused on trustless cross-chain communication protocols that bind L1 and L2 networks. A key feature of Asterizm is the transfer of cross-chain message encryption on the client's server side, which also works as an oracle to ensure the validity of the transaction on the source chain.

Toposis an interoperability protocol that enables public and private blockchains to communicate with each other. Zero-knowledge proofs allow blockchains to prove the validity of their state transitions without revealing private information, such as account addresses and account balances.

ZetaChain is the foundational, public blockchain that enables omnichain, generic smart contracts, and messaging between any blockchain. ZetaChain envisions and supports a truly fluid, multi-chain crypto ecosystem. These "omnichain" smart contracts can send data and value between connected blockchains, including Ethereum, Polygon, Binance Smart Chain, and eventually, non-smart chains such as Bitcoin and Dogecoin. ZetaChain is built on Cosmos SDK and Tendermint Consensus.

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.

Electron Labs is an universal ZK-proof aggregation layer for Ethereum. It uses light clients and zero-knowledge proofs to maintain decentralization. Electron uses UPA underneath to aggregate proofs from multiple source into a single superproof, thus amortizing the cost per use case.

TeleSwap is a trustless and universal interoperability protocol that provides developers with an infrastructure to build cross-chain applications. With it, users can transfer any data, such as messages, contract calls, tokens, or NFTs, between blockchains.

Omnity is an omni-chain interoperability protocol built by Octopus Network on the Internet Computer (IC) specially designed to fit the modular blockchain landscape. Omnity addresses challenges like security vulnerability, high cost and latency, and liquidity fragmentation. The ultimate goal of Omnity is to connect thousands of blockchains and facilitate millions of cross-chain transactions per day.