Navigating the world of blockchain tools for developers can be a bit like exploring a maze. But fear not! There are B2B tools out there that act like a helpful guide, making the journey smoother for both tech wizards and those not-so-tech-savvy – integrate cutting-edge cross-chain tools into your dApp with our Best Rate Finder solution, seamlessly connecting your platform to the ecosystems of over 90 blockchains.

Crypto dApps like DEXs, Wallets, and GameFi projects often face the need to integrate a cross-chain crypto exchange directly into their project’s interface and give access to a user-friendly token swap solution across various networks.

Rather than allocating significant resources to develop such a solution in-house, projects can opt for a ready-made solution from another crypto project. Notable examples include MetaMask leveraging LI.FI for its bridging tool, Layer3 incorporating Socket for its cross-chain swap feature, and HoldStation Wallet integrating Rubic’s API to power the built-in swap feature.

So, what are these best Web3 B2B Cross-Chain Tools, how do they differ, and what ready-made solutions are out there on the market? Today, the most popular and easy-to-integrate options are SDKs, widgets, and APIs. Let’s explore these solutions to help you determine the best fit for your project.

API/SDK vs Widget: Choosing the Right Development Arsenal

Although API, SDK and Widget perform the same end result, they serve different needs. Let’s explore the difference.

SDK & API:

An SDK and an API are related concepts in software development, but they serve different purposes.

API (Application Programming Interface):

• An API is a set of rules and protocols that allows one software application to interact with another. It defines how different software components should communicate and provides a set of tools for developers to use when integrating their application with external services or libraries.
• APIs can be used for various purposes, such as retrieving data from a server, sending data to a server, or accessing specific functionalities of a software component.

SDK (Software Development Kit):

• An SDK is a broader set of tools, libraries, and documentation that aids developers in building applications for a specific software platform, hardware system, or framework. It typically includes APIs, but it goes beyond them by providing additional resources and tools to simplify the development process.
• SDKs often include sample code, documentation, and other resources that help developers understand how to use the provided APIs and build applications more efficiently.
• SDKs must be regularly updated to ensure they function correctly; failure to do so can lead to errors and potential losses.

In essence, an API is a part of an SDK. The API is the interface that allows communication between different software components, while the SDK is a more comprehensive package that includes the API along with other tools and resources to support developers in building applications on a particular platform.

Pic. SDK Powered by Rubic

Widget:

On the other hand, a Widget is a collection of prebuilt UI components designed to facilitate the integration of specific functionalities with ease. In the context of cross-chain experiences, Widgets suit any crypto project like Portfolio Trackers, GameFi or any other dApp which doesn’t require much customization. Easy-to-install Widgets play a crucial role in expanding cross-chain interoperability, offering a convenient service for users of various applications.

Pic. Widgets powered by Socket

Choosing Between API/SDK and Widget:

The decision between using API/SDK or Widget depends on the specific needs of your development project. If you require a comprehensive suite of development tools and a versatile environment to create a completely customized and coherently integrated cross-chain solution, API/SDK is the preferred choice. 

However, if your focus is implementation speed and possibilities to embed into different pages and environments, a Widget becomes the go-to option.

Top Crypto Cross-Chain Toolkits

The market for crypto API/SDKs and Widgets is extensive, with many tools on offer. In this diverse market, we’ve carefully curated a list of seven standout products that deliver exceptional functionality for blockchain interoperability. 

For your convenience, we’ve developed a comparison table which summarizes various Cross-Chain B2B tools.

LI.FI:

Project Overview: 

A bridge aggregation protocol with DEX connectivity and cross-chain data messaging capabilities focusing mainly on b2b solutions. Jumper Exchange is a b2c version of LI.FI. 

Cross-Chain Toolkit Configuration: Cross-Сhain SDK, API & Widget

Networks For Cross-Chain Swaps: 32

Key Features: 

Integrated Bridge Insurance and LI.Fuel support into SDK and Widget solutions. LI.Fuel allows to receive a part of the bridged tokens as gas on the destination chain. Advanced features – Handling Chain Switches and Load Wallet Balances.

Resources: 

Website: https://li.fi/ 

Rubic

Project Overview: 

Rubic, as a best DEX & cross-chain aggregator, aggregates 90+ blockchains and testnets, while it enables swaps of 15,500+ assets with the best rates, highest liquidity, and transaction speeds – in one click, thanks to the integration of 320+ DEXs and bridges. 

Cross-Chain Toolkit Configuration: Cross-Chain API, SDK & Widget

Networks For Cross-Chain Swaps: 90+

Key Features:

As a cross-chain tech aggregator, Rubic Bridge API provides a diverse array of integrated DEXs (300+), bridges (20+), and networks (90+). Besides, 6 other cross-chain aggregators like LI.FI, Rango Exchange, XY Finance, Rango, Unizen, and SwapCoffee are integrated within Rubic’s App. For dApps, this means their users gain access to all the networks and bridges supported by these projects, all conveniently aggregated within Rubic’s ecosystem. For end-users, the Rubic app ensures that competitive aggregators, including Rubic’s rivals, are available as options when searching for the best rates for their DeFi swaps. 

Customizable fees: Integrators share fully customized trading fees with Rubic. 

Full Customization & White Label API/SDK Solution: Rubic’s API/SDK Integrators can customize everything from the UI/UX to the selection of supported DEX’s, Bridges & Networks.

Resources: 

Cross-Chain Tools Website – https://tools.rubic.exchange/ 

API Website – https://tools.rubic.exchange/rubic-api 

API Documentation – https://www.npmjs.com/package/rubic-sdk 

SDK Documentation – https://docs.rubic.finance/integrate-sdk/sdk-overview 

Widget Documentation – https://docs.rubic.finance/integrate-widget/rubic-relay-widget

Easy-to-Use Widget Configurator: https://rubic.exchange/widget 

App – https://app.rubic.exchange/ 

Website – https://rubic.exchange/ 

Axelar (Squid):

Axelar Project Overview: 

Axelar ensures secure interchain communication and token transfers, independent of consensus or message details. Interchain apps built on Axelar are fully permissionless, immune to censorship by oracles, relayers, or validators. It adopts a proof-of-stake security model aligned with connected chains.

Squid is a cross-chain liquidity layer powered by Axelar. 

Axelar and Squid support various Cosmos chains, including but not limited to Kava, Kujira, Umee, Juno, and more. 

Cross-Chain Toolkit Configuration: Cross-Сhain SDK & Widget

Networks For Cross-Chain Swaps: 72

Key Features: Squid provides an SDK and Widget to build cross-chain swaps, bridges and generic transactions. Squid’s Cross-Chain Tools’ key features include maximum chain and token coverage on all Axelar-supported chains. Plus, speed and security powered by Axelar’s cross-chain architecture. 

Resources: 

SDK Docs – https://docs.squidrouter.com/squid-v1-docs-cosmos/sdk 

Widget Docs – https://docs.squidrouter.com/widgets/widget 

App – https://app.squidrouter.com/

Axelar Website – https://axelar.network/ 

Socket (Bungee):

Project Overview: 

Socket is an interoperability protocol facilitating smooth asset and data transfers among blockchain apps. Socket’s interoperability stack comprises two key components: Socket Liquidity Layer and Socket Data Layer, enabling efficient and secure transactions. 

Cross-Chain Toolkit Configuration: Cross-Сhain SDK & Plugin

Networks For Cross-Chain Swaps: 16

Key Features: 

Allows developers to easily transfer liquidity and information across chains via the Socket Liquidity Meta-Layer built-in to the Cross-Chain Toolkit. 

Resources: 

SDK Docs – https://socketdottech.github.io/socket-v2-sdk-docs/ 

Plugin Docs – https://sockettech.notion.site/Socket-Widget-Docs-b905871870e343c6833169ebbd356790 

App – https://www.bungee.exchange/ 

Website – https://socket.tech/ 

XY Finance:

Project Overview: 

XY Finance is a cross-chain interoperability protocol aggregating DEXs & Bridges. With the ultimate smart routing across chains, XY Finance allows cross-chain transactions at the best rates & top speed.

Cross-Chain Toolkit Configuration: Cross-Chain API & Widget

Networks For Cross-Chain Swaps: 24

Key Features:

XY Finance stands out by aggregating data from over 243+ DEXs and bridges. This means that integrators utilizing their Widget or API gain seamless access to aggregated liquidity and comprehensive information across a vast array of DEXs and bridges. 

Resources: 

API Docs – https://docs.xy.finance/bridge-aggregator-integration/xy-finance-api-multiple-bridges-aggregator 

Widget Docs – https://docs.xy.finance/bridge-aggregator-integration/xy-finance-widget-iframe 

App – https://app.xy.finance/ 

Website – https://xy.finance/ 

Celer Bridge:

Project Overview: A classical popular bridge supporting moving a limited number of tokens across 40 chains. 

Cross-Chain Toolkit Configuration: Multi-Chain SDK 

Networks For Cross-Chain Swaps: 43

Key Features:

The functionality exclusively focuses on bridging tokens across different blockchain networks.

Resources: 

SDK Docs – https://cbridge-docs.celer.network/developer/cbridge-sdk 

App – https://cbridge.celer.network/10/56/USDC 

Website – https://celer.network/ 

Across:

Project Overview: A cross-chain bridge for L2s and rollups secured by UMA’s optimistic oracle. It is optimized for capital efficiency with a single liquidity pool, a competitive relayer landscape, and a no-slippage fee model.

Cross-Chain Toolkit Configuration: Multi-Chain SDK & API

Networks For Cross-Chain Swaps: 15

Key Features:

Their one liquidity pool design along with an interest rate fee model allows for lower costs for users and higher yields for liquidity providers.

Different SDK modules.

The functionality exclusively focuses on bridging tokens across different blockchain networks.

Resources: 

SDK Docs – https://docs.across.to/v/developer-docs/developers/across-sdk

API Docs – https://docs.across.to/v/developer-docs/developers/across-api 

These B2B toolkits are selected based on their real-world utility, ensuring that developers and businesses can effectively integrate cross-chain solutions. All of them are part of the expansive Rubic ecosystem, designed to provide comprehensive access and seamless cross-chain solutions. Explore these toolkits to elevate your cross-chain capabilities and stay ahead in the dynamic crypto landscape.

The future belongs to cross-chain solutions and enhanced user experiences, where users will choose platforms that allow them to complete necessary actions quickly, easily, and within seconds—finding the best solutions all in one place.

If you’re facing challenges and looking to strengthen your project with a quick solution, it doesn’t always require extensive resources or time. Sometimes, all it takes is finding the right tool or partner who can provide the functionality or a simple solution you need. We invite you to explore Rubic and see how we can help bring your vision to life.