List of Developer Tooling projects on Ethereum (2026)

WDK provides open-source libraries and modules for building self-custodial wallets supporting multiple blockchains. The modular architecture includes wallet modules for blockchain operations, protocol modules for DeFi integrations including swaps, bridges, and lending, and pre-built UI components for React Native. Built on Bare runtime, it supports Node.js and React Native environments, enabling deployment across mobile, desktop, embedded systems, and server applications.

MDK is an open-source developer framework that gives Bitcoin mining operators and developers unified control over mining infrastructure. It combines a backend software development kit with a modular worker and orchestration architecture that standardizes communication with miners, sensors, cooling, and electrical systems, alongside a user interface development kit for building dashboards. Developers use it to build monitoring dashboards, automated workflows, pool management tools, and analytics or optimization applications without building device-level integrations from scratch.

Cosmos SDK is an open-source framework for building application-specific blockchains. It provides configurable Go modules covering authentication, staking, governance, and IBC, which developers compose to define custom chain logic. Chains built with the SDK are sovereign and IBC-compatible by default, enabling connectivity across the Cosmos ecosystem.

Cosmos EVM is developer tooling that adds EVM execution capabilities to Cosmos SDK-based blockchains. It exposes Ethereum JSON-RPC endpoints and supports Solidity smart contracts alongside the standard Ethereum developer toolchain, including MetaMask compatibility. Chains using Cosmos EVM run EVM-compatible applications while retaining native IBC interoperability for cross-chain communication.

Chainlink VRF generates verifiable random numbers for smart contracts through cryptographic proof mechanisms published and verified onchain. The system prevents tampering by oracle operators, developers, or miners through cryptographic verification of random value generation. VRF v2.5 supports subscription-based and direct funding payment models with LINK or native tokens.

Chainlink Automation executes smart contract functions through decentralized oracle networks monitoring onchain conditions and time-based triggers. The system automates transaction execution without centralized infrastructure, uses the same node operators securing Chainlink data feeds, and enables developers to offload operational maintenance for protocol automation workflows.

Chainlink Functions provides smart contracts with trust-minimized compute infrastructure for API data retrieval and custom computation execution. The system operates through decentralized oracle networks that execute source code in serverless environments, aggregate independent results through consensus, and support threshold-encrypted secrets for authenticated API access.

Chainlink Runtime Environment is an orchestration layer for institutional smart contracts enabling data connectivity, compliance, privacy, and cross-chain interoperability. The system compiles workflows into WebAssembly binaries executed across decentralized oracle networks, uses Byzantine Fault Tolerant consensus for operation verification, and supports Go and TypeScript SDK development.

Chainlink Runtime Environment (CRE) is a developer platform that lets builders compose modular oracle capabilities into custom cross-chain workflows using Go, TypeScript, and other languages. It re-architects Chainlink's platform into purpose-built decentralized oracle networks (DONs) per capability, coordinated through DON-to-DON communication. CRE enables institutional-grade smart contracts to operate across public and private blockchains with built-in compliance and privacy support.

Chainlink Privacy Standard is a developer framework that enables private smart contracts on public and private blockchains by combining trusted execution environments (TEEs), zero-knowledge proofs, and the DECO protocol. It provides confidential computing through Chainlink Confidential Compute, selective disclosure for regulatory compliance, and cross-chain private transaction support via CCIP. Institutions use the standard to protect trade logic, tokenized asset metadata, and KYC credentials while remaining auditable to designated counterparties.

A set of APIs and developer tools including Swap (Classic, Fusion, Fusion+), Portfolio API, Web3 RPC, security endpoints, and data APIs for tokens and pricing.

1inch Business is a set of APIs and software development kits that give developers programmatic access to token swaps, orderbook data, balances, pricing, portfolio analytics, and RPC node endpoints. Developers integrate these APIs to build trading, wallet, and agentic applications without operating their own infrastructure. The suite covers multiple blockchains and supports API key or OAuth-based authentication.

DCAP Dashboard automates onchain collateral upkeep for Intel SGX and TDX attestation workflows through smart contracts deployed across multiple EVM networks. The platform continuously fetches, validates, and refreshes DCAP collateral files including PCK certificates, TCB info, and CRLs, preventing silent attestation failures as upstream certificates expire or are revoked. It provides a unified interface for monitoring collateral health across validator networks, rollups, and AI agent infrastructure, backed by Automata's TEE Attestation SDKs and Multi-Prover AVS.

Crossmint Authentication provides user identity verification through email, social media logins, and wallet connections. The system enables progressive onboarding flows and integrates with the wallet infrastructure for identity management. Developers use it as a user management layer tightly tied into other Crossmint products.

Rollup-as-a-Service is a platform that enables enterprises to deploy custom Layer 2 rollups on Ethereum within minutes, providing enterprise-grade infrastructure with 24/7 monitoring and Web3 service integrations.

A transaction relay service that submits user requests to supported EVM networks and enables gasless or ERC‑20–paid execution via a cross‑chain Gas Tank. The SDK and API handle submission from off‑chain to on‑chain with fast inclusion and no downtime.

An ERC‑4337 bundler with support for verifying and ERC‑20 paymasters plus a unified Gas Tank on Polygon for multi‑chain sponsorship. It settles exact gas post‑execution, removes prefunding, and returns enhanced user operation tracking with real‑time status updates.

A verifiable randomness service for smart contracts. Requests are processed via Gelato Web3 Functions, with network‑specific fee premiums charged as a percentage of gas.

Fee Collector is a protocol fee aggregation service that automatically collects fees in any ERC-20 token and converts them to USDC daily. Protocols using Gelato's Paymaster & Bundler can activate fee collection in one click, eliminating manual token swaps and consolidating fragmented balances across chains into a single, stable USDC balance for simplified revenue reporting and accounting.

AgentKit is a developer framework that enables AI agents to interact with blockchain networks through secure wallet management and onchain capabilities. It provides a wide range of blockchain actions across multiple wallet providers while remaining compatible with various AI models and development tools. Developers use it to build autonomous agents capable of holding assets, executing trades, and interacting with smart contracts.

Chainlist is a reference directory of EVM-compatible blockchain networks providing chain IDs, native currency details, and public RPC endpoints. Users browse available networks and add them directly to compatible wallets with a single action. Developers reference the data for standardizing network integrations.

meson.to is a developer SDK that lets web3 applications accept stablecoin deposits from any supported blockchain directly into their own smart contracts. It offers link-based, JavaScript SDK, and API integration methods, embedding a branded cross-chain interface within a host application. The toolkit routes transfers through the underlying cross-chain swap protocol, handling signature verification and transaction routing, while requiring host contracts to implement a specific deposit method to receive funds. It is used by developers who want to accept multi-chain deposits without building their own bridge infrastructure.

Subgraphs implement flexible blockchain indexing through TypeScript, enabling developers to create custom GraphQL APIs from smart contract data. The system processes on-chain events and provides queryable endpoints with webhook support and automated deployment capabilities.

Mirror implements real-time data streaming pipelines that sync blockchain data directly into databases and message queues. The system enables point-and-click configuration for multiple data destinations while providing unlimited access without per-query fees.

DeFi API is an API platform that provides unified access to multiple decentralized finance protocols and applications. It enables developers to integrate DeFi functionality including token swaps across chains, liquidity provision, and interaction with various DeFi projects through standardized endpoints.

A developer toolkit to build, test, deploy, and run custom blockchain data indexers and GraphQL APIs on the SubQuery Network, helping developers deliver fast, flexible data for dApps.

Filecoin Virtual Machine provides smart contract functionality on the Filecoin blockchain, enabling developers to deploy programmable storage applications and automate storage deals through code execution.

TransFi API is a developer tooling product that provides a unified programmatic interface for integrating fiat and crypto payment functionality into third-party applications. It exposes endpoints for payments, conversions, and money movement so developers can embed payment capabilities into their own products without building separate integrations for each payment method. The API serves businesses building payment flows that combine local fiat rails with stablecoin and crypto settlement.

Squid Widget is an embeddable React component that allows applications to integrate cross-chain swapping functionality directly into their interfaces. The widget supports customizable themes and configurations for seamless user experiences.

Squid SDK provides TypeScript libraries and examples for developers to integrate cross-chain routing capabilities into their applications programmatically. The SDK offers route calculation and transaction execution functionality.

Squid API provides REST endpoints for calculating cross-chain routes and executing transactions. The API enables developers to access Squid Router functionality without client-side SDK integration.

Core smart contract infrastructure consolidating liquidity across all Fluid protocols, enabling seamless capital flow between lending, borrowing, and trading functions through automated supply/borrow operations.

A development toolkit that enables dapp integration with MetaMask across multiple platforms. The system provides authentication, transaction handling, and contract interaction capabilities for Web3 applications.

An open-source plugin system that extends MetaMask functionality through custom integrations. The system enables developers to add support for new networks, account types, and APIs within the wallet environment.

MetaMask Smart Accounts Kit is a development framework implementing ERC-4337 account abstraction and ERC-7715 advanced permissions, enabling creation of smart contract accounts with programmable delegation rules, batch transaction execution, gas abstraction through paymasters, and granular permission sharing for automated actions without repeated user confirmations.

Orderly Trading Infrastructure is a white-label orderbook infrastructure that provides shared liquidity across multiple blockchains. It enables developers to build spot and perpetual futures trading platforms with centralized exchange-level order matching performance and non-custodial, on-chain settlement. It is used by decentralized exchange builders and trading teams integrating trading functionality into their products.

A platform that enables users to create their own perpetual contract DEX in minutes without coding, providing customizable trading interfaces with built-in liquidity and professional infrastructure.

Portal Enclave MPC API provides server-side blockchain signing through TSS MPC cryptography combined with AWS Nitro Secure Enclaves. The system enables sub-second transaction signing for EVM-compatible and Solana smart contracts through RESTful API endpoints.

Portal Account Abstraction enables gas sponsorship, transaction batching, and programmable on-chain functionality through smart contract wallets. The system integrates with Portal's MPC infrastructure to provide configurable account abstraction features.

Crypto Exchange API is a developer API that enables platforms to add crypto swap functionality and expand supported coins and tokens, with partner revenue sharing and priority support.

Exchange Widget is an embeddable module that lets websites offer crypto swaps, buy/sell, and DEX modes with customizable appearance, token settings, and performance statistics.

Haiku API provides programmatic access to the Declarative Transaction execution engine through REST endpoints. The strategy execution flow accepts a target portfolio state via /quote and converts it to an unsigned EVM transaction via /solve; a natural language flow processes plain-text commands via /buildIntentNaturalLanguage. The system handles cross-chain routing and protocol interactions with all-or-nothing execution guarantees.

QuickAlerts is a feature that provides real-time notifications about onchain events, helping users stay updated with the latest blockchain activities

Software development kit for easy integration of QuickNode services into applications.

Staking API delivers unified REST endpoints for integrating non-custodial staking operations across multiple proof-of-stake networks through single authentication. The API automates validator deployment, stake management, unbonding operations, and reward tracking through standardized methods. Implementation supports distributed validator technology, EigenLayer restaking, and advanced staking configurations with comprehensive SDKs and integration templates.

Syncro Sender is developer tooling that routes Solana transactions through multiple validator-level connections simultaneously using stake-weighted QoS priority routing. The service deploys endpoints across six global regions to minimize latency and maximize transaction landing success for execution-critical applications. Syncro Sender integrates via REST API and applies per-landed-transaction pricing with no upfront commitment.

Visa Tokenized Asset Platform is a developer tooling product that lets financial institutions issue and manage fiat-backed tokens on blockchain networks. It provides an API layer connecting to blockchain infrastructure and a Visa-developed standard for token issuance, with a sandbox testing environment for banks to experiment before production use. The platform targets issuer and acquirer banks seeking to tokenize fiat currency for payment use cases.

Full-stack toolkit for building, deploying, and managing web3 applications on EVM-compatible blockchains with smart contract tools, SDKs, and infrastructure.

thirdweb Contracts offers audited smart contract templates and deployment tools for tokens, NFTs, marketplaces, and DAOs across any EVM-compatible blockchain with modular and upgradeable architecture.

thirdweb Engine is a backend server that reads, writes, and deploys contracts at production scale with automatic nonce management, stuck transaction resubmission, and gas fee management.

Relay SDK, also referred to as RelayKit, is a developer tooling product that lets applications embed cross-chain bridging, swapping, and execution features. It provides prebuilt interface components, hooks, and programmatic access to Relay's quoting and execution flows for both EVM and non-EVM chains. Wallet providers and application developers use it to add cross-chain functionality without building the underlying infrastructure themselves.

Relay API enables developers to quote and execute cross-chain transactions programmatically. The API supports bridging, swapping, cross-chain execution, and provides real-time quotes with 30-second expiration for optimal pricing.

Topper is a fiat-to-crypto on-ramp and crypto-to-fiat off-ramp delivered through an embeddable widget and developer APIs for business partners and wallets. Consumers buy crypto directly to a self-custodial wallet using cards, digital wallets, or bank transfers, and sell crypto to receive fiat on a linked debit card. The product supports recurring purchases and integrates via a web SDK, mobile SDK, REST API, webhooks, and single sign-on for partner applications.

Luganodes Staking API is a developer tool that provides a unified interface for integrating non-custodial staking into third-party platforms across multiple proof-of-stake networks. It supports staking, unstaking, redelegation, reward claiming, withdrawals, and transaction broadcasting through standardized endpoints, abstracting network-specific protocol complexity. Custodians, exchanges, and wallet providers use it to embed staking functionality directly into their own products without managing infrastructure.

Implements rollup infrastructure through optimized node services, enabling Layer 2 blockchain deployment and management. The system supports multiple rollup architectures with integrated monitoring and scaling capabilities.

Ramper SDKs is a developer toolkit that embeds wallet creation and fiat on-ramp flows inside third-party applications. It allows developers to onboard users into self-custody wallets and accept fiat payments without building this infrastructure themselves. The toolkit is used by application developers building Web3 products across multiple blockchains.

Shared Prover is infrastructure that generates zero-knowledge proofs for multiple rollups deployed through Gateway, reducing the need for each chain to run its own dedicated proving infrastructure. It verifies transaction validity off-chain and posts succinct proofs on-chain, supporting the security guarantees of zkEVM-based Layer 2 and Layer 3 networks. The service is offered alongside Gateway's rollup deployment tooling for teams operating zero-knowledge chains.

AMIS provides enterprise blockchain infrastructure through patented technologies including Istanbul BFT consensus algorithm and Hierarchical Threshold Signature Scheme. The platform offers custodial wallet services, PoS protocol implementations, and Layer 2 framework solutions for financial institutions.

NFTScan Developer Platform delivers comprehensive NFT data services through REST APIs, enabling developers to access ERC-721 and ERC-1155 asset information, transaction records, collection statistics, and marketplace data across multiple blockchain networks.

NFTScan Site provides professional management backend and site services for NFT collections, NFT marketplaces, and NFTfi projects within the NFT ecosystem.

Range API provides access to blockchain intelligence infrastructure, enabling address screening, compliance checks, and real-time transaction risk detection through programmatic interfaces.

0x Gasless API is a developer tool that enables token swaps without requiring users to hold native chain tokens for gas. It sponsors transaction fees on behalf of end users by abstracting gas payments and approvals into the backend, covering both gasless approvals and gasless swaps in a single flow. The API integrates into wallets and applications to remove a common onboarding friction point for users new to on-chain trading.

Kiln Connect is a developer tooling suite offering a unified set of APIs for staking operations across proof-of-stake protocols. It includes a transaction crafting API for programmatically creating staking and unstaking transactions and a reporting API for real-time monitoring of yields and validator performance. The service is validator-agnostic, allowing wallets, custodians, and exchanges to integrate staking data and operations without depending on Kiln-run validators, and it interoperates with third-party custody providers for signing.

Kiln Widget is a no-code embeddable platform that enables wallets, custodians, exchanges, and technology providers to offer staking and DeFi yield opportunities to their users. It allows platforms to launch a fully branded standalone dApp or embed the interface directly within an existing product, with a customizable editor for aligning the experience to a platform's brand. The widget connects to staking and DeFi yield sources, including dedicated validators, staking pools, and multiple lending protocols, without requiring integrators to build their own infrastructure.

Particle Auth provides social login infrastructure for Web3 applications, enabling one-click user onboarding through popular platforms like Google and Twitter. The system generates smart accounts while maintaining familiar Web2 authentication flows.

An API and SDK for developers to integrate multi-chain token swaps into their applications, supporting both DEX aggregation and cross-chain transactions.

MPC Node Suite is a fully privatized, white-label MPC-TSS infrastructure that enables businesses to build keyless wallet and custody systems at scale. Server-side middleware secured by Intel SGX trusted execution technology works alongside SDKs for web, iOS, and Android to provide distributed key generation, signing, refreshing, and recovery with configurable signing thresholds. The suite supports hierarchical deterministic key derivation and multiple blockchain networks, serving exchanges, payment service providers, wallet service providers, and self-custody service providers building cold-wallet and custody applications.

StaFi LSaaS is a developer toolkit that enables Layer 1 teams, project developers, and startups to deploy liquid staking protocols without building infrastructure from scratch. The stack provides modular smart contract frameworks for EVM and Cosmos environments, supporting both LST and LRT deployment. Builders configure staking pool logic, validator delegation, and token issuance through pre-built components maintained by the StaFi development team.

GoPlus provides Security SDKs to facilitate the integration of its security services into various platforms, including wallets and dApps. These SDKs enable developers to leverage GoPlus's security capabilities, ensuring robust protection for user transactions across multiple blockchain environments.

SafeToken Protocol implements secure token issuance and liquidity management infrastructure through standardized smart contract templates and liquidity locking mechanisms. SafeToken Factory provides open-source token contract templates following Token Risk Classification standards for EVM-compatible chains. SafeToken Locker enables customizable lock periods for liquidity pool tokens with reward collection capabilities and compatibility with major decentralized exchanges including Uniswap V2 and V3.

Tatum Platform is a unified blockchain development toolkit providing RPC nodes, APIs, SDKs, and developer tools for building Web3 applications. The system offers access to multiple blockchain protocols through standardized interfaces while maintaining cross-chain compatibility and enterprise-grade infrastructure.

Unified AI platform providing smart contract generation and auditing, trading analysis, trading assistance and blockchain information through conversational AI interfaces trained on Web3 data.

Rango SDK provides programmatic access to Rango's cross-chain aggregation functionality through a JavaScript/TypeScript library. Developers can integrate token-swapping capabilities across multiple blockchains into their applications with comprehensive API support.

Rango Widget enables websites and applications to add cross-chain swap functionality through a customizable UI component. The widget offers configuration options through a visual playground and supports integration with popular front-end frameworks.

Prime SDK is a development toolkit that removes Web3 usability barriers by providing ERC-4337 account abstraction infrastructure. The SDK enables developers to build applications with gasless transactions, transaction batching, and cross-chain functionality across multiple EVM networks.

Modular SDK is an ERC-7579 development toolkit that enables customizable smart accounts through modular architecture. The SDK allows developers to enhance security and user experience by integrating various modules for account functionality and supports EntryPoint 0.7.0.

TransactionKit is a React library for Web3 development that enables transaction batching, cross-chain functionality, and gasless transactions. The library allows frontend developers to integrate smart account features without deep blockchain knowledge through React components.

Skandha is an ERC-4337 compliant bundler service that collects multiple UserOperations and combines them into single transactions to reduce gas costs. The TypeScript bundler supports EIP-7702, EntryPoint versions 0.6, 0.7, and 0.8, and provides built-in MEV protection with shared mempool functionality.

Arka Paymaster Service is an open-source ERC-4337 compliant paymaster that enables sponsored and gasless transactions. The service allows users to pay gas fees with stablecoins and enables projects to cover transaction costs for their users through smart account sponsorship.

deBridge Liquidity Network is a cross-chain and same-chain trading infrastructure that provides fast, capital-efficient swaps with guaranteed rates. Users specify desired outcomes through orders, which professional solvers fulfill competitively by supplying tokens on destination chains immediately and later claiming source tokens, all secured by the underlying messaging layer. The network operates on a zero-TVL model without traditional liquidity pools, enabling near-instant settlement, zero slippage, and delivery of native rather than wrapped assets. It is accessible through a trading interface, an API for custom integrations, and an embeddable widget.

dePort is a native bridge for assets that lets protocols deploy synthetic representations of their tokens across multiple blockchain networks using a lock-and-mint model. Native tokens are locked in a smart contract on the source chain while corresponding synthetic assets are minted on destination chains, with total minted supply always fully backed by the locked collateral. The system supports automatic listing, so any token can be bridged without prior approval, and it can also serve as a canonical custody bridge for chains connected through deBridge infrastructure services. It is built on the underlying messaging protocol and targets token issuers and protocols seeking multi-chain presence without wrapped-asset risk.

Consumer App manages decentralized credit, enabling card management and financial service access without selling crypto.

Sphere API is a developer toolkit providing RESTful endpoints and SDKs for embedding global stablecoin payments into third-party platforms. It supports payment processing, fiat and crypto conversions, and multi-chain transfers, allowing businesses to build on-ramp, off-ramp, and settlement functionality without extensive engineering. The toolkit is used by platforms seeking to embed payment rails across multiple blockchains and stablecoins.

OpenZeppelin Contracts is a library of modular and reusable smart contracts available for Ethereum-compatible blockchains in Solidity and for Starknet in Cairo, implementing standards like ERC20 and ERC721 with focus on security, gas efficiency, and best practices.

A secure operations platform for smart contract development that enables secure automation, monitoring, and management of blockchain applications across 30+ networks.