Cosmos SDK vs Virtual TestNets vs Connext

Build an ecosystem optimized for your goals while opening up new revenue streams.

Comparison Summary

Cosmos SDK, Virtual TestNets and Connext each address unique challenges in the web3 ecosystem, offering complementary strengths for builders. A modular, open-source framework for building secure, sovereign, and interoperable Layer 1 blockchains. Virtually operated Web3 networks that replicate real blockchain networks for development, testing, and staging without using real assets. Connext is a secure, fast modular interoperability protocol enabling cross-chain fund bridging and asynchronous Solidity development. Together, these tools serve different but overlapping user needs, making them valuable components in a modern web3 development stack.

	Cosmos SDK Web3 Developer Tools Infrastructure Tools	Virtual TestNets Web3 Developer Tools Infrastructure Tools	Connext Web3 Developer Tools Web3 SDKs Blockchain Interoperability Tools
At a Glance
Composability
Cross-Chain
Customizability
Developer Support
Ease of Integration
Performance
Key Features
Core Capabilities	CometBFT Consensus Engine, CosmWasm Smart Contracts, Interchain Accounts	Public and Admin RPC endpoints, Visual dashboard for management and monitoring, Integration with popular development frameworks	xCall Primitive, xERC20 Tokens, Cross-Chain Restaking
Chain Support	—	+21	+5
Best For	Infrastructure Developers, DeFi Developers	DeFi Developers, Infrastructure Developers	DeFi Developers, Infrastructure Developers
Pricing
Free Tier	Open Source	Free	Standard
Paid Features	—	1 paid tiers	—
Custom Plans	—	—	—

Add a related tool

Related Tools

Explore web3 competitors and apps like Cosmos SDK.

Functions

Web3 Developer Tools Web3 SDKs Infrastructure Tools Rollups-as-a-Service (RaaS)

Gelato provides infrastructure and SDKs to build smart wallets, gasless transactions, and custom rollups with ERC-4337 & 7702 support across 100+ chains.

+13

Orbiter Finance

Web3 Bridges Infrastructure Tools

Orbiter Finance is a zero-knowledge technology-based Ethereum acceleration engine that enables fast, affordable, and secure bridging and swapping of crypto assets across multiple blockchain ecosystems.

Custodial NFT Wallet

Web3 Developer Tools Web3 SDKs Web3 Payment Tools Token Management Tools

Crossmint is an all-in-one platform that integrates wallets, stablecoins, tokenization, and payment primitives into apps and products with easy APIs and no blockchain complexity.

+10

Binance

Web3 Developer Tools Infrastructure Tools

Binance is a leading global blockchain ecosystem and cryptocurrency infrastructure provider offering a range of developer tools and open-source projects.