List of the Top 3 Layer 2 Protocols for PolyBridge in 2025

The latest advancements in layer 2 solutions for Ethereum dApps empower developers to leverage their preferred tools while effectively reducing the expenses associated with scaling their applications. Within this framework, an aggregator functions similarly to a node on Ethereum, allowing client software to execute remote procedure calls (RPCs) through a standardized API to interact with an Arbitrum chain. This aggregator plays a crucial role by transmitting these calls to the EthBridge and returning the results of transactions to the client, reflecting the behavior of a conventional Ethereum node. Although it's common for clients to route their transactions through an aggregator when engaging with an Arbitrum chain, this is not strictly necessary. The architecture permits an unlimited number of aggregators to be created, and there are no restrictions on who can act as an aggregator. To optimize processing efficiency, aggregators often merge several client transactions into a single submission to the Arbitrum chain. Moreover, the Arbitrum ecosystem includes a specialized Sequencer capable of organizing transactions, which leads to rapid transaction confirmations with minimal latency. This groundbreaking arrangement not only enhances overall throughput but also cultivates an adaptable environment where developers can explore and innovate without the constraints of high costs, ultimately promoting greater experimentation within the blockchain space. By providing such flexibility, layer 2 solutions are poised to significantly transform the landscape of decentralized applications.

Carbon is a key cross-chain protocol crafted for the decentralized finance (DeFi) landscape. It empowers users to establish open financial markets for various asset classes spanning multiple blockchains. Serving as the core infrastructure for Demex, a prominent decentralized exchange, it supports the trading of an extensive range of financial instruments. By utilizing the PolyNetwork bridge, Carbon guarantees authentic cross-chain liquidity pools, enabling smooth interactions among networks like Ethereum, Cosmos, BSC, Neo, and Zilliqa. Furthermore, it promotes innovation in the DeFi realm by providing native capabilities for crypto derivatives, Balancer-style liquidity pools, automated market makers (AMMs), and on-chain order books, among other functionalities. Constructed on the Cosmos-SDK, the protocol is reinforced by a robust network of validators operating under the Tendermint Proof of Stake consensus mechanism, which secures trustless transactions. This exceptional fusion of attributes not only enhances Carbon's prominence but also establishes it as an essential contributor to the rapidly advancing DeFi ecosystem. Its adaptability and comprehensive toolset make it a preferred choice for developers and users alike.

Polygon, which was previously referred to as Matic Network, is a comprehensive protocol and framework established for the development and interconnection of blockchain networks that are compatible with the Ethereum platform. Despite Ethereum being the favored choice for blockchain initiatives, it has its own set of limitations. Polygon effectively tackles these challenges by offering a straightforward method for deploying pre-configured blockchain networks with a single click, bolstered by a growing selection of modules that aid in the creation of tailored networks. Furthermore, Polygon includes an interoperability protocol that allows for the seamless transfer of messages between Ethereum and various other blockchain ecosystems, in addition to providing a modular and optional “security as a service” feature. Its adaptor modules significantly improve the interoperability of existing blockchain systems, simplifying their integration process. By combining the advantages of Ethereum with those provided by autonomous blockchains, Polygon delivers an attractive range of functionalities aimed specifically at developers. In essence, it is meticulously designed by developers to cater to the unique requirements of their peers, ensuring it aligns well with the evolving demands of the blockchain community while fostering innovation and collaboration within the space.