List of Developer Tooling companies in Web3 (2026)

Stylus adds a WebAssembly virtual machine alongside the EVM on Arbitrum chains, enabling smart contract development in Rust, C++, and C while maintaining full interoperability with existing Solidity contracts and significantly reducing gas costs for computation-intensive applications.

AvaCloud provides no-code blockchain deployment through managed infrastructure and automated services, enabling enterprises to launch custom blockchains in minutes. The platform includes 24/7 support while offering compliance-ready configurations and enterprise-grade SLAs.

Cosmos SDK is a framework for developers to build custom, application-specific blockchains. It provides tools and modules for creating interoperable, secure Layer 1 blockchains that can communicate with other blockchains using the Inter-Blockchain Communication (IBC) protocol. It is designed for developers who need a flexible and modular platform to create decentralized applications.

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.

BeaconKit implements modular consensus infrastructure through CometBFT integration, enabling EVM-identical blockchain development with customizable validation. The system provides single-slot finality while supporting alternative consensus mechanisms.

AlgoKit is a developer toolkit for building decentralized applications on Algorand. It provides native TypeScript and Python smart contract development with CLI tools for project scaffolding, local blockchain testing, automated deployment, and a visual debugger. The toolkit includes LORA, a web-based explorer for inspecting on-chain accounts, transactions, and applications during development.

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.

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.

AgentKit is a developer framework that enables AI agents to interact with blockchain networks through secure wallet management and onchain capabilities. The system provides 50+ blockchain actions across multiple wallet providers while maintaining framework-agnostic compatibility with various AI models and development tools.

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.

CoinGate E-commerce Plugins provide ready-made integrations for popular e-commerce platforms including WooCommerce, WHMCS, PrestaShop, and others. These plugins enable online stores to accept cryptocurrency payments without custom development work.

Ramper SDKs is a developer SDKs that embed wallet creation and fiat on-ramp flows inside applications.

Codex Dashboard provides API key management, usage monitoring, and billing controls for developers integrating with the Codex API.

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

CDP SDK provides client libraries for managing crypto wallets while relying on Coinbase infrastructure to secure private keys. The SDK enables programmatic wallet creation, address management, balance tracking, and transaction execution across EVM-compatible chains and Solana networks.

Dash Platform implements a decentralized API and data storage layer through Drive and DAPI components, enabling application development on the Dash network. The system provides developer SDKs while maintaining security through the masternode infrastructure.

deBridge Widget is an embeddable user interface component enabling applications to integrate cross-chain asset transfers and swaps without building custom bridging infrastructure. The widget provides plug-and-play functionality for onboarding users from different blockchain networks, supports customization for brand alignment, and includes affiliate fee collection capabilities. Applications can deploy the widget through straightforward integration processes to offer cross-chain functionality within their existing interfaces.

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.

Autoscout is a self-service deployment platform enabling users to launch customized block explorers for EVM-compatible chains within minutes. The system provides hosted infrastructure, automatic updates, and configuration options for testnets, rollups, and production mainnets.

Circles SDK offers development tools for building applications on the Circles protocol, including avatar management, trust connections, and token operations through JavaScript interfaces.

Bitnob Trading Infrastructure implements cryptocurrency exchange functionality through REST API endpoints, enabling automated Bitcoin-USDT swaps with integrated liquidity sourcing. The system provides real-time price discovery while maintaining order execution capabilities for platform integration.

CoinPayments API implements RESTful endpoints through HMAC-authenticated HTTP POST requests, enabling programmatic payment processing integration. The system provides transaction creation, balance queries, and webhook notification functionality for custom implementations.

Banxa APIs provide REST endpoints for order creation, price quotes, payment methods, KYC sharing, and currency support, enabling partners to build custom cryptocurrency exchange interfaces with streamlined verification.

Changelly API enables developers to integrate cryptocurrency exchange functionality into applications through REST endpoints. The API supports both centralized exchange aggregation and DeFi swap routing, providing access to Multiple cryptocurrencies across various blockchains. Implementation includes exchange rate queries, transaction initiation, and order status tracking, with authentication via API keys and optional custom fee structures for API partners.

Axelar Virtual Machine enables developers to write smart contracts on Axelar while scaling interchain deployments and programming the cross-chain networking layer.

Butter SDK provides developers with tools and libraries for integrating cross-chain functionality into applications, enabling easy implementation of omnichain features through standardized APIs and documentation.

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

0x Gasless API processes token trades without requiring users to hold native chain tokens, forwarding gas costs to relayers through standardized relaying mechanisms.

Archax Tokenisation Engine enables creation and management of digital tokens representing real-world assets through multi-chain deployment infrastructure, supporting issuance of tokenized funds, bonds, equities, commodities, and stablecoins across integrated blockchain protocols.

Bitkub API enables developers to integrate cryptocurrency trading and wallet functionality into applications through RESTful endpoints, supporting market data access, order management, and account operations. The API provides real-time price data and secure authentication for automated trading systems.

Bullish Trading API suite offers REST, WebSocket, and FIX interfaces for programmatic interaction with the Bullish exchange, supporting market data access, order management, and account operations.

Airnode is serverless oracle node software enabling API providers to run first-party oracle nodes that deliver cryptographically signed data directly to smart contracts. Operators configure Oracle Integration Specifications (OIS) to map existing REST API endpoints into blockchain-compatible data formats and deploy through managed cloud infrastructure. By having API providers sign their own data at the source, Airnode establishes cryptographic attribution for on-chain oracle feeds.

CoinTool is a no-code blockchain toolbox that enables token creation, batch token distribution, and wallet management across multiple EVM and non-EVM networks. Users deploy standard token contracts, send tokens to multiple addresses in one transaction, generate wallets in bulk, check allowances, and query airdrop eligibility through a browser-based interface without writing code.

CoinJar Clear is a white-label API infrastructure that enables financial services companies to integrate cryptocurrency trading capabilities into their existing platforms. The solution provides access to liquidity pools and custody systems through customizable endpoints for embedded exchange functionality.

Balmy SDK is a blockchain integration tool with TypeScript libraries. It enables developers to build applications with token balance management, DEX quote aggregation, and multi-chain functionality. The system provides modular services for allowances, gas optimization, price feeds, and DCA positioning.

Bitcoin Suisse APIs are enterprise REST and FIX interfaces that let developers integrate trading, custody, staking, reporting, and client management into their own systems. A single API key can manage multiple client accounts with low‑latency execution and reporting endpoints.

Coinchange provides API-powered stablecoin yield infrastructure for fintech companies, enabling customers to earn on digital assets through integrated DeFi protocols. The system offers embedded yield functionality with automated portfolio management and risk-neutral strategies across multiple blockchain ecosystems.

A GraphQL development environment for building and testing blockchain data queries across multiple networks.

API service that converts natural language inputs into executable blockchain transactions. Extracts parameters from user prompts to prepare transaction objects, query blockchain data, or generate smart contract code for direct integration into third-party applications.

CoinTR API is a developer interface that provides programmatic access to exchange functionality including trading, market data, account management, and order execution. The API enables third-party applications and algorithmic trading systems to integrate with the CoinTR platform.

Artemis Sheets implements spreadsheet plugins for Excel and Google Sheets that connect to on-chain data. The system delivers customizable crypto metrics using =ART() functions while maintaining compatibility with standard spreadsheet operations.

Belong SDK provides developers with APIs and tools to integrate NFT-based token gating and access management into applications. The framework supports multichain functionality, gasless minting, and verification of NFT access credentials across supported networks while offering comprehensive error handling and security features.

Bando API offers backend integration for the Bando Fulfillment Protocol, providing endpoints for product catalogs, global quotes, transaction building, and payment processing for developers building spending features.

CoinPay API Integration provides developers with programmatic access to CoinPay's payment and cryptocurrency services through API endpoints. The integration enables businesses to incorporate CoinPay's functionality into their own applications and platforms.

A developer API suite enabling cryptocurrency payment integration into third-party applications through exchange rate estimation endpoints, embeddable web widgets, and React SDK components. The Exchange API calculates crypto-to-fiat conversions with all fees included, while the React SDK provides native interface components for seamless transaction flows within web applications.

AVNU Paymaster is a developer tool that enables gas fee flexibility on Starknet, allowing users to pay gas in any supported token or enabling developers to fully sponsor user transactions. It removes onboarding friction by eliminating the requirement to hold native tokens.

BitMEX API implements REST and WebSocket interfaces for algorithmic trading and market data access, enabling programmatic interaction with all exchange functions. The system provides real-time data streaming and complete trading automation capabilities.

Bity Exchange API provides programmatic access to Swiss-regulated crypto exchange functionality, enabling businesses and developers to integrate fiat-to-crypto, crypto-to-fiat, and crypto-to-crypto trading capabilities. The API supports exchanges up to CHF 1,000 daily without KYC requirements and offers revenue-sharing opportunities for partners.

BlockWyre SaaS Solutions provides embedded fintech services for software platforms, enabling wallet functionality, payment processing, and compliance integration. The system offers API-driven tools for crypto custody, liquidity management, and cross-border payment capabilities.

ChangeHero API implements programmatic cryptocurrency exchange functionality for integration into third-party platforms, wallets, and applications. The API provides access to swap infrastructure, rate optimization algorithms, and multi-exchange liquidity aggregation through RESTful endpoints. Partners can configure custom fee structures and utilize multiple API keys with independent commission parameters.

Staking SDK implements developer tools enabling applications to integrate multi-chain staking functionality through standardized APIs. The system provides abstraction layers for validator operations, reward tracking, and transaction signing across supported Proof-of-Stake networks, reducing implementation complexity for institutional platforms and wallet providers.

DexPay B2B API enables developers to integrate wallet-native cryptocurrency transactions and fiat interoperability into their applications through decentralized protocol endpoints, supporting cross-border remittances and automated rate discovery.

AgenteBTC API provides developer integration tools and programming interfaces for accessing cryptocurrency exchange functionality, enabling third-party applications to integrate with AgenteBTC services.

Cartridge VRF provides atomic, verifiable randomness through cryptographic proofs for onchain games on Starknet. The system processes VRF requests and responses within single transactions using Stark curve verification and Poseidon hashing, enabling synchronous random value generation without multi-transaction delays.

Deribit API provides JSON-RPC and WebSocket interfaces for programmatic access to derivatives trading, supporting REST endpoints, real-time market data subscriptions, and FIX protocol integration for institutional clients.

Alpaca Trading API enables commission-free stock, options, and crypto trading through REST and WebSocket interfaces for algorithmic traders and developers. The system supports real-time order execution, portfolio management, and paper trading simulation environments for strategy testing. Trading API includes margin trading capabilities, fractional share trading, and automated order routing across market venues.

Avantis SDK provides developers with tools and APIs to integrate real-time price feeds, execute trades, and manage positions on the Avantis platform for building DeFi applications and trading algorithms.

CoinCraddle API is a developer API enabling integration of cryptocurrency exchange functionality into third-party applications with customizable fee structures and access to aggregated liquidity from multiple providers.

Coinone API is a developer interface exposing REST and WebSocket endpoints for market data and account operations with versioned references and real-time streams.

D3 Connect SDK provides domain resolution capabilities for applications using wallet addresses. The software resolves human-readable names to blockchain addresses through standardized APIs. Developers implement the SDK to support cryptocurrency transfers using domain names instead of addresses. The system unifies traditional DNS and Web3 naming services into a cross-platform interface.

W3AP is an advertising infrastructure platform for Web3 applications. It provides SDKs, APIs, and tools that enable developers to integrate advertising capabilities into decentralized applications. The platform handles ad delivery, tracking, and reward distribution through blockchain technology.

Greenlight is a cloud-hosted Lightning node service and developer API that allows apps to integrate non-custodial Lightning payments without running their own infrastructure.

Rollup Engine provides developers with tools to deploy custom Ethereum Layer 2 and Layer 3 blockchains using established frameworks like Arbitrum Nitro, Optimism Bedrock, ZK Stack, and Polygon CDK. The platform manages deployment, customization, maintenance, and security for rollups.

AbstractionKit is an open-source TypeScript SDK that provides developers with tools to build ERC-4337 and EIP-7702 smart wallets. The platform features Safe Account integration, user operation construction, gas sponsorship through integrated paymaster services, transaction bundling via Voltaire bundler infrastructure, social recovery capabilities, and includes a reference mobile wallet implementation demonstrating seedless recovery, gasless transactions, and batch operations.

Trading tools and APIs designed for Solana that provide ultra-low latency transaction execution, MEV protection, and real-time data streams from multiple DEXs including Raydium, Jupiter, and Pump.fun.

Cairo Programming Language provides a way to write programs that can prove their computations are correct without revealing the actual data. It uses Rust-like syntax to help developers create smart contracts for Starknet and build applications that need mathematical proofs of correctness. The language includes tools for testing, debugging, and generating proofs, making it simpler for developers to build trustworthy blockchain applications without deep cryptography knowledge.

A developer toolkit enabling businesses to integrate cryptocurrency payment acceptance through the Beans platform. The SDK generates QR code payment requests, supports multi-currency transactions with automatic conversion, processes instant settlements, and provides webhook notifications for payment confirmations. Merchants can deploy point-of-sale systems, e-commerce integrations, or custom payment flows while accessing Beans network liquidity without managing individual on-ramp partnerships.

Brutus Energy Bot provides automated energy and bandwidth rental services on the Tron blockchain through a Telegram bot interface, API, and web platform. The system allows users to rent or provide energy and bandwidth resources, automating the resource provisioning process for Tron transactions.

Apibara DNA is a protocol for streaming on-chain data directly to applications through efficient binary protocols. The system enables data filtering at the node level to reduce bandwidth usage while maintaining transaction composability.

CryptoMate Treasury is a digital asset management system enabling businesses to operate blockchain networks with multi-portfolio administration, bank account connections, and transaction monitoring capabilities. The system supports network management, virtual wallet creation, tokenized asset tracking, and business unit configuration. Users can link traditional banking infrastructure for balance deposits and withdrawals, process multi-currency payments against stablecoins, and access real-time analytics for blockchain implementations.

Dework Platform provides task management infrastructure for decentralized organizations through customizable workspaces, bounty systems, and contributor tracking. The system enables role-based access control via Discord integration and token holdings, supports batch cryptocurrency payments through Gnosis Safe integration, and maintains two-way synchronization with GitHub for issue tracking. The platform facilitates transparent workflow management while supporting various payment tokens across blockchain networks.

The REAL (Reliable Electronic Artwork Ledger) Protocol is a system developed by Artrade for authenticating physical artworks using blockchain technology. It bridges physical art and NFTs by creating verifiable provenance records and enabling secure ownership transfers.

Bluechip API is a developer interface for programmatic access to Bluechip’s ratings and assessment data.

Token Hub offers no-code Smart Token deployment and management capabilities. The platform enables developers to create, configure, and deploy programmable tokens with custom business logic through a web-based interface.

Crunch Hub provides a competition platform interface enabling organizations to launch machine learning challenges and connect with data scientists globally through structured Crunches with defined rules, datasets, metrics, and prize pools.

The Databricks Data Intelligence Platform unifies data engineering, SQL analytics, machine learning, and generative AI on an open lakehouse architecture. Lakeflow handles batch and streaming ETL pipelines, Databricks SQL delivers serverless data warehousing via the Photon query engine, Mosaic AI enables foundation model training and serving with vector search and AI gateway capabilities, AI/BI Genie supports conversational analytics, Unity Catalog provides unified data and AI governance with lineage and access controls, and Delta Sharing enables zero-copy data sharing. Deployed on AWS, Azure, and GCP.

Onyx implements end-to-end ETP issuance and operation through proprietary technology infrastructure, enabling third-party crypto ETP creation.

AiMo API Platform provides a unified OpenAI-compatible API for accessing decentralized AI models with X402 protocol-based cryptocurrency payments. The platform enables users to pay for AI inference on-demand using USDC on Base or Solana networks without requiring pre-funded accounts or traditional API keys. The system supports standard chat completion endpoints with automatic payment verification and on-chain transaction settlement.

An open-source x402 framework providing libraries, tools, and plugins to add payment-enabled flows to applications with minimal changes through wrappers, middleware, or proxies.

Curvy SDK is a developer toolkit that enables applications to integrate privacy-first cryptocurrency payment functionality. It allows developers to onboard users, assign ENS-compatible handles, generate private deposit addresses, and send funds while maintaining transaction privacy. The SDK provides methods for wallet initialization, balance queries, and private fund transfers across supported blockchain networks.

Solana JavaScript SDK is a modular TypeScript library for building Solana applications across Node.js, web browsers, and React Native platforms. The SDK provides native cryptographic operations, tree-shakable architecture, and zero external dependencies, enabling developers to read blockchain data, execute transactions, and interact with on-chain programs.

Noir is a domain-specific language for creating zero-knowledge proofs. Noir enables developers to build private applications while maintaining compatibility with public blockchain infrastructure.

Comoco NFT Registry implements cross-chain token mapping protocols that maintain consistent identity tracking of digital assets across multiple blockchain networks. The system creates verifiable relationships between primary and secondary token representations, enabling seamless licensing enforcement regardless of which blockchain hosts the asset. The registry serves as core infrastructure for IP verification, supporting the broader Comoco licensing ecosystem.

An API service providing standardized access to NFT collections and token metadata on Starknet, with features like real-time transfer tracking, ownership data, and media caching to enhance application user experience.

Boltwade Studio is a game development infrastructure with Dojo engine and Unity integration, enabling creation of flash games on Starknet. The platform combines Dojo's provable game mechanics with Unity's rendering capabilities while maintaining fast transaction speeds.

Scaffold-ETH 2 is an Ethereum development stack implementing TypeScript support and modular design patterns. The framework integrates contemporary web tools with blockchain functionality for accessible dApp development and testing.

Cantina Code is a code review platform that facilitates communication and coordination between developers and security researchers. Users can track findings, filter information, and receive notifications in a structured environment.

Chakra Data Warehouse implements structured data storage through a DuckDB-based architecture, enabling high-performance analytics and transformations. The system processes data on bare-metal infrastructure while maintaining full data ownership and access controls.

Privacy Pools implements compliant privacy-preserving transactions on Ethereum using zero-knowledge proofs and an Association Set Provider. The protocol allows users to deposit assets publicly and withdraw them privately to new addresses while excluding illicit actors to maintain compliance.

Bridgebuilder is an IP collaboration and discovery platform that lets users map, connect, and commission work across fictional worlds and game IP. It explores client-side proofs and storage/ZK proofs on Dojo/Starknet, peer collaboration with CRDTs and IPFS, and on-chain settlement for provenance and royalties. Current work focuses on UX prototypes and interoperability across frameworks.

Calimero Network provides tools for building self-sovereign applications that store data locally on user devices. These applications use client-side validation to verify actions, secure encryption for protecting communications, and local data vaults to maintain user control. Developers can create applications using standard programming languages without specialized cryptography knowledge.

DARK implements a trusted execution environment (TEE) for for Model Context Protocol (MCP) servers that automatically integrates new tools into AI systems, enabling continuous capability expansion and performance improvement without manual intervention.

Financial Information Exchange protocol implementation for the collection of pre-sale orders on competitively underwritten municipal securities, supporting trade processing and integration with external systems.

Solana-native verifiable compute system for integrating private data proofs into smart contracts.

Bonsol is a ZK co-processor for Solana that enables off-chain computation with on-chain verification, allowing developers to build applications with enhanced privacy and scalability.

Checkpoint implements event-based indexing through customizable JavaScript data writers, enabling blockchain data querying via GraphQL. The system processes Starknet smart contract events while maintaining database synchronization with on-chain state.

A development library enabling secure, private computations on sensitive data through multi-party computation protocols. The SDK facilitates collaborative computations while maintaining data confidentiality, designed for blockchain and fintech applications requiring enhanced security for sensitive operations.

A small toolbox for the adventuring Solana degen. Use these to build, experiment and if needed, get out of trouble.

Cambrian SDK accelerates Node Consensus Network development through pre-built components, consensus algorithms, and deployment tools for Solana restaking protocols. The system provides CLI utilities and programming abstractions for rapid AVS deployment.

Código Interface Description Language implements smart contract interface specification through a formal language, enabling automated generation of blockchain program boilerplate and client libraries.