List of Developer Tooling companies in Web3 (2026)

Sway is a domain-specific programming language based on Rust syntax, designed for high-compute blockchain environments with compile-time analysis, safety features, and smart contract paradigm support.

Forc (Fuel Orchestrator) provides development tools for building, testing, formatting, and deploying Sway smart contracts with integrated package management and project scaffolding capabilities.

CoinDCX API is a developer access service providing programmatic endpoints for placing spot, margin, and lending orders and retrieving market data such as candles, order books, and account balances on the CoinDCX exchange. It works through REST and socket-based interfaces that allow trading applications and bots to interact with the exchange without a browser interface. The service is aimed at algorithmic traders and businesses building automated integrations with the exchange.

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

Superbridge Rollies is infrastructure-as-a-service that provides customizable bridge interfaces for blockchain teams. The system includes dedicated indexers, custom domains, theme customization, and integration support for OP Stack and Arbitrum Orbit rollups.

Peanut Protocol is a self-custodial peer-to-peer payments application for sending and receiving digital dollars across borders. Users deposit and withdraw funds using passkey authentication, then send money via simple links or QR codes, including local payment rails such as MercadoPago QR in Argentina and Pix in Brazil, with no local ID or bank account required. The app covers network fees on deposits and withdrawals and supports multiple stablecoins across several blockchain networks. Developers can integrate payment functionality into their own applications through an accompanying SDK and API.

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.

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.

0xGraph is a real-time blockchain indexing engine that exposes smart contract data via Graph-compatible subgraphs for low-latency GraphQL queries without running infrastructure.

Bridge-as-a-Service is a developer toolkit for deploying custom cross-chain bridges on ElkNet using standardized smart contracts and SDKs.

Farm-as-a-Service is a developer toolkit to deploy and manage liquidity farming contracts with configurable parameters across supported networks.

Zondax Hub is a web-based tool for discovering and installing Ledger hardware wallet apps developed by Zondax. Users connect a Ledger device, browse available asset apps by name, and install released or pre-release versions. The platform provides access to apps pending official Ledger Live approval, including versions marked as under review or not yet released.

Kunobi is a desktop application for managing Kubernetes clusters and GitOps workflows. It connects to clusters via the Kubernetes API to surface real-time visibility into deployed workloads, Helm release histories, sync status, and drift detection across multiple cluster environments. The tool runs locally and integrates with Flux for GitOps coordination.

Zemu is an end-to-end testing framework for Ledger hardware wallet applications. It automates integration testing using Ledger's Speculos emulator, enabling developers to run reproducible test suites against Ledger apps without physical devices. The framework is used across Ledger apps built by Zondax and by external teams, including the official Ledger Ethereum app.

The Polkadot Ledger Migration App is a web-based tool for transitioning existing Ledger accounts from legacy per-chain Polkadot apps to the new universal Polkadot Ledger app. It supports multiple networks within the Polkadot ecosystem and provides a guided interface for migrating an entire portfolio through a single workflow, with transaction signing handled by the connected Ledger device.

The Vault K8S Canister is a proof-of-concept secret management system using Internet Computer canisters for decentralized secret storage and rotation. It manages and rotates secrets for Kubernetes cluster workloads, enabling transparent and configurable secret sharing between consumers. The implementation uses IC canister technology to provide tamper-resistant secret management outside traditional centralized vaults.

Zondax Filecoin Developer Tools is a collection of libraries and utilities for building on the Filecoin network. Components include Solidity libraries for calling Filecoin built-in actors from EVM smart contracts, transaction signing tools across multiple languages, gas optimization utilities, and an AssemblyScript SDK for the Filecoin Virtual Machine. The tools are designed to enable developers familiar with EVM environments to build Filecoin-specific applications.

Zondax ICP Developer Tools provides a C++ wrapper for the Internet Computer agent library, enabling C++ applications to interact with ICP canisters, and a protocol modification enabling ICP nodes to push metrics to external services using mutual TLS authentication. These components extend ICP's integration surface for developers using non-native toolchains and for node operators requiring accessible metrics without firewall modifications.

Drand is a distributed randomness beacon protocol producing publicly verifiable, unbiased, and unpredictable random values at fixed intervals. Linked drand nodes use bilinear pairings and threshold cryptography to collectively generate randomness, ensuring no single node can predict or manipulate the output. The protocol is designed for applications requiring verifiable randomness in decentralized or cryptographic contexts.

Zondax Ping is a notification application delivering real-time alerts for configured blockchain events and system conditions. Users define monitored conditions and receive push notifications when those conditions are triggered. The tool is designed for developers and network operators who require real-time monitoring of on-chain activity or infrastructure state.

Triple-A API is a developer tooling product that provides endpoints and documentation for integrating Triple A's payment, payout, and remittance capabilities into external applications. Developers use it to create payment sessions, monitor transactions, and manage settlement programmatically rather than through Triple-A's own dashboard interfaces. It serves engineering teams at merchants, platforms, and financial institutions building custom integrations on top of Triple A's infrastructure.

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.

Sentism Telegram Mini App provides users with an integrated DeFi interface within Telegram for launching tokens, optimizing yields, and managing AI-powered operations through a mobile-first chat application.

Gateway is a transaction optimization and delivery platform for Solana that enables developers to optimize priority fees, select delivery methods, and monitor transactions in real-time. The system processes raw transaction payloads through configurable optimization parameters including compute unit pricing, delivery method selection via RPC providers, Jito bundles, Triton Cascade, and Paladin, with dynamic parameter adjustment through an observability dashboard without code redeployment.

Ironforge is a Web3 DevOps platform providing RPC routing, observability, and infrastructure management for blockchain applications. The system offers sequential and parallel RPC routing methods across multiple providers, transaction analytics including compute unit monitoring and confirmation rates, incident management via configurable alerts, security controls through firewall rules with rate limiting and IP whitelisting, and comprehensive performance monitoring for blockchain application health.

Drops Airdrop Tracker monitors wallet addresses across multiple blockchain networks to identify unclaimed cryptocurrency airdrops, providing eligibility checks and Telegram notifications. The platform tracks airdrops on Ethereum, Solana, Cosmos, Aptos, Sui, Starknet, Bitcoin, and TON without requiring wallet connections.

Metaplex Bubblegum v2 is an enhanced compressed NFT architecture with improved concurrent Merkle tree structures, enabling optimized digital asset creation with advanced indexing capabilities. The system provides upgraded compression algorithms and enhanced verification mechanisms for large-scale NFT deployment across enterprise applications. It is designed for enterprise applications, enabling mass creation of digital assets across RWAs, AI, gaming, and other use cases

Metaplex Core helps creators make and sell digital items like NFTs affordably on Solana. It provides simple tools to build collections, set prices, and manage assets without high costs. Artists can mint unique designs, traders can buy and sell easily, and developers can integrate it into apps. Its low fees and fast transactions make it stand out for anyone wanting to work with digital assets.

Metaplex Token Metadata is a standardized metadata attachment for fungible and non-fungible tokens on Solana, enabling interoperability across the ecosystem. The system provides on-chain data structures while transitioning to immutable status with independent security audit oversight.

Genesis SDK is a software development kit providing audited smart contracts and tools for building token launch platforms on Solana. The SDK offers launch pool, auction, and presale mechanisms with integrated compliance tools, real-time token data access, and DEX liquidity migration capabilities. Enables developers to deploy standardized fair-launch infrastructure without custom contract development.

Thoth functions as a security toolkit for Cairo and Starknet, providing bytecode analysis, disassembly, and decompilation capabilities for smart contract review. The tool enables security teams to inspect low-level code execution and identify potential vulnerabilities in deployed contracts.

Cairo-fuzzer implements automated testing techniques for Cairo and Starknet smart contracts, identifying edge cases and security vulnerabilities. The system uses input mutation to generate test cases, allowing developers to discover potential exploits during development rather than after deployment.

Octopus performs security analysis on WebAssembly modules and blockchain smart contracts across multiple platforms including Bitcoin, Ethereum, NEO, and EOS. The tool enables comprehensive code inspection for vulnerability detection and contract verification.

WARF tests WebAssembly runtimes for security issues through automated fuzzing techniques. The tool focuses on improving resilience in WebAssembly virtual machines, parsers, and execution environments by systematically identifying edge cases and unexpected inputs.

Sui-fuzzer implements automated testing for Sui blockchain smart contracts, detecting security vulnerabilities through input manipulation techniques. The system tests contract execution paths systematically, providing developers with insights into edge cases and potential security flaws before deployment to the Sui network.

Sedge is a one-click setup tool for PoS network/chain validators and nodes that helps with the configuration and deployment of validators for Ethereum and other networks.

starknet.go is a Golang library for Starknet and Cairo that allows developers to interact with the Starknet network, submit transactions, and call smart contracts from Go applications.

StarkWeb is a TypeScript library that connects applications to the Starknet blockchain. It provides interfaces for data retrieval, transaction submission, and smart contract interaction.

Bee-js is a JavaScript library that provides developers with APIs to interact with the Swarm network, enabling decentralized application development with minimal code.

Swarm-CLI is a command-line interface that simplifies node management and decentralized application development on the Swarm network through intuitive commands for file operations and network interaction.

Bee API provides an HTTP interface for interacting with the Swarm network, offering endpoints for node management, data operations, and network metrics access.

Oobit Plug & Pay SDK is a white-labeled developer toolkit that lets crypto wallets and exchanges embed real-world spending capability into their own applications. It connects self-custody wallets or exchange balances to merchant payment rails, handling identity verification, card issuance and activation, and fiat settlement on the wallet's behalf. Cards issued through the toolkit appear with the wallet's own branding and can be added to major mobile payment wallets for use at Visa-accepting merchants worldwide.

TACo is a decentralized cryptographic infrastructure layer that enforces access control policies over sensitive data using independently-controlled nodes and threshold cryptography.

DART is a blockchain-based lien and eNote registry system that tracks ownership of notes, liens, and collateral in real-time. The system uses Provenance Blockchain to automatically update loan ownership and registration information, providing investors and lenders with operational efficiency and verifiable ownership records.

Odos API provides programmatic access to the Odos Smart Order Routing infrastructure for developers and protocol integrators. The API suite includes a Smart Order Router (SOR) API that identifies optimal token swap paths across integrated liquidity sources, a Token Pricing API for real-time DeFi asset price data, Liquidity Zaps for automating single-asset deposits and withdrawals into liquidity pools, and a Path Visualization API for generating Sankey diagrams of trade routes. A free public tier and a dedicated Enterprise tier with higher rate limits and dedicated infrastructure are available.

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.

Dojo Engine implements a provable game engine through Cairo smart contracts, enabling fast onchain game development with built-in components for state management and game logic.

Stablecoin Orchestration APIs provide programmatic access to M0 liquidity networks through standardized interfaces, enabling stablecoin minting and redemption. The system connects to multiple issuers while automating transaction monitoring and settlement.

Meria API is a developer interface that lets integrators programmatically access account data including staking, lending, cloud, and hardware contracts, wallets, and operations. Developers authenticate with an API key to query contract status, wallet addresses, and transaction operations. It enables third-party applications to integrate Meria's investment and staking services.

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.

Cross-Chain NFT allows non-fungible tokens to transfer between blockchain networks while preserving uniqueness, metadata, and provenance. The platform maintains consistent NFT attributes and ownership history across chains using burn-and-mint mechanisms without wrapped versions. Users mint ERC721-compatible NFTs with cross-chain functionality through MessageClient integration.

Noah AI is a no-code platform for building and deploying blockchain applications and smart contracts using AI. Users describe an application in plain text and Noah AI generates a full-stack DApp including frontend interfaces, backend APIs, smart contracts, and deployment configuration. Features include automated contract testing, vulnerability detection, AI-generated audit reports, and one-click deployment to testnet or mainnet on EVM-compatible chains and Solana. Pre-built integrations are available for protocols including Raydium, Jupiter, and Pump.fun.

Capture is a Web3 media management platform for creating, registering, and monetizing digital content with on-chain provenance on the Numbers network. It provides a mobile camera application for recording media directly to the Numbers Blockchain, a dashboard for managing authenticated digital assets, and a developer SDK for integrating provenance features into applications. An embeddable widget, Capture Eye, enables web publishers to display content credentials and support direct media purchases.

Validator Gateway is an infrastructure tool for blockchain validators that reduces latency between validator nodes and MEV relays. It connects validators to optimized network paths and integrates with MEV-Boost workflows, including a Proposer-MEV Protect feature that captures additional MEV value while applying compliance filters to incoming order flow. Validators use it to improve consensus and execution layer rewards through custom timing parameters and higher-quality block proposals.

Solana Trader API is a developer API that enables faster and more reliable transaction landing on Solana without requiring users to run their own node. It offers frontrunning protection, stake-weighted quality of service, and simultaneous submission across multiple channels, alongside real-time streaming of new pool and DEX activity. Trading bots, DeFi traders, NFT minters, wallets, and RPC providers use it to improve execution speed and reduce failed transactions.

Data Streams is a real-time data feed service that delivers blockchain activity including swaps, blocks, mempool transactions, and shred data with minimal delay. It runs on the same relay infrastructure as bloXroute's execution services, replacing lossy RPC polling with continuous, gap-free data delivery. Developers and trading systems use the feeds to build closed-loop trading and execution pipelines across multiple supported blockchains.

Transaction & Bundle Propagation is an execution service that submits single transactions or grouped bundles across multiple blockchains with optimized, low-latency propagation paths. It routes submissions through private, authenticated channels so that frontrunning and sandwich bots cannot intercept pending activity. Traders, searchers, and infrastructure teams use it to achieve faster and more reliable transaction landing than public relay or RPC alternatives.

Streamflow SDK is a developer toolkit that lets applications integrate programmable payment and distribution features directly into their own software. It exposes libraries for creating and managing token vesting, streaming payments, and distribution contracts without building the underlying logic from scratch. Developers use it to embed Streamflow's onchain distribution mechanics into custom applications and services.

Streamflow Widgets is an embeddable component library that lets developers add airdrop claim flows and token distribution interfaces directly into their own websites and applications. It provides prebuilt interface elements that connect to Streamflow's distribution contracts, removing the need to build claim portals from scratch. Teams use it to offer branded claim experiences without directing users to a separate application.

A REST API that converts queries into live endpoints for seamless data integration, enabling automated data extraction and analysis. The API supports pagination, filtering, sorting, and sampling capabilities with DuckDB integration for enhanced performance and real-time blockchain analytics.

A purpose-built SQL query engine based on Trino fork, optimized for blockchain data analysis with support for varbinary data types, uint256/int256 support, and columnar storage. The engine enables interactive queries across datasets from gigabytes to petabytes with blockchain-specific capabilities.

dbt Connector enables data teams to run production-grade dbt projects directly on Dune's data warehouse using the dbt-trino adapter. Teams can build, test, and deploy data transformation pipelines with full support for incremental models, testing frameworks, and CI/CD orchestration while maintaining write access to DuneSQL via Trino API endpoints.

LunarCrush MCP Server enables AI models to access real-time social and market data through Model Context Protocol integration, providing social intelligence for financial AI applications.

Dynamic SDK is a wallet infrastructure platform that lets applications embed self-custody and server-managed wallets, connect external wallets, and accept stablecoin payments. It provides authentication through email, social login, and external wallets, key management via threshold signature schemes, and smart account features for gas sponsorship and approval logic. Developers use it to onboard users, manage compliance and fraud controls, and move funds across multiple blockchains without building wallet infrastructure from scratch. The platform also supports global wallets that operate across multiple partner applications and programmatic server wallets for automated signing.

StarknetKit is a developer toolkit that lets applications integrate Starknet wallet connections, including an embedded web wallet that onboards users with only an email address. It provides session keys for automated transaction signing, paymaster support for customizable or sponsored gas fees, and multicall functionality to bundle several transactions into one signature. Developers use it to connect decentralized applications to Ready and other Starknet wallets without requiring downloads or seed phrase management.

Lightspark SDK provides developers with APIs and libraries for Lightning Network integration across multiple programming languages. The toolkit enables businesses to build Bitcoin payment functionality into applications without managing Lightning infrastructure directly.

Fuze OS is a digital asset infrastructure platform that lets banks, fintechs, and other businesses embed crypto trading, custody, payments, and stablecoin services into their own products. It provides unified APIs for wallet creation, fiat and crypto account management, trading execution, and compliance monitoring. The platform handles order execution, custody orchestration, and reconciliation while giving operators a dashboard to track transactions and compliance events. It supports fiat-to-crypto conversion, cross-border settlement, and AI-assisted compliance automation. Businesses use it to launch branded trading, payment, and wallet experiences without building regulatory or custody infrastructure themselves.

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.

TradePort NFT Trading SDK is a TypeScript library that enables developers to integrate NFT trading functionality into applications through programmatic transaction creation. The SDK supports buying, selling, sweeping, listing, bidding, instant selling, and transferring NFTs across marketplaces with automated transaction payload generation. Currently supports Aptos and Sui blockchain networks with cross-marketplace liquidity aggregation.

CoinRemitter is a merchant payment gateway that lets businesses accept cryptocurrency payments for goods, services, and donations. It processes payments through hosted wallets with automated forwarding to merchant-specified addresses, notifying merchants of activity via webhooks. Merchants integrate it through a REST API, open-source plugins for popular e-commerce and web platforms, or embeddable tools such as invoicing, pricing tables, presale campaigns, payment buttons, and hosted payment pages. It supports transactions across multiple blockchains and stablecoins.

Gear IDEA is a web-based IDE for developing, testing, and deploying smart contract programs on Vara Network. It provides a browser-based environment for writing Rust-based programs that compile to WebAssembly and deploy directly to the Vara blockchain.

Berachain Faucet is a testnet token distribution tool for the Berachain network, providing developers and users with testnet tokens for application development and testing.

A cross-chain development toolkit that lets developers create wallet addresses and handle signing requests across multiple blockchain networks, using distributed MPC for security.

An Ethereum Virtual Machine smart contract deployed on Solana that processes EVM-compatible transactions according to Ethereum rules, enabling parallel execution through Solana's runtime. The system accepts Ethereum-like transactions via Web3 API, converts them through Neon Proxy operators, and executes them on Solana while maintaining full compatibility with Solidity development tools and ERC-20 token standards.

An operator-run service that converts Ethereum-like transactions into Solana-compatible transaction batches, providing full Web3 API compatibility for Ethereum clients. The proxy handles transaction pre-testing, gas estimation, and multi-transaction packaging to overcome Solana's account limits while maintaining Ethereum development workflows.

Python framework for building selective blockchain indexers. Includes code generation, ORM integration, and multiple datasource support with TimescaleDB and GraphQL integration.

Ready-to-use blockchain data API service exposing extensive blockchain data collections through GraphQL interfaces, from generic to application-specific datasets.

GraphQL IDE for interacting with DipDup APIs, featuring a query editor, interactive explorer, and documentation integration for improved developer experience.

Fonbnk Server-to-Server API is a developer tooling product that lets businesses integrate on-ramp and off-ramp crypto conversion directly into their own applications. Developers authenticate through the merchant dashboard, sign requests, and call endpoints to create orders, check statuses, and receive webhook notifications as transactions progress. It exposes the same underlying mobile-money-to-stablecoin conversion logic as the Pay Widget but without a hosted user interface, allowing wallets and platforms to build custom flows.