List of Developer Tooling companies in Web3 (2026)

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.

Bitwage Partner API is a developer tooling product that lets third-party businesses integrate global payroll and payment functionality into their own applications. It provides authenticated endpoints, using API keys or OAuth 2.0, for creating companies, managing workers, and initiating payroll or invoice payments. Developers use it to embed crypto and fiat payroll capabilities directly into their own platforms without building payment infrastructure from scratch.

GhostGraph is a developer tool that lets users write blockchain indexers in Solidity, define schemas, implement handlers, and query indexed data via GraphQL using hosted endpoints.

GhostLogs is a developer tool that adds custom gasless events and new view functions to existing smart contracts without changing the original code, with an in‑browser IDE and data export integrations.

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.

The Privily Developer SDK and MCP Plugin are integration tools that let developers and AI agents embed Privily's private, multi-chain payment operations into their own applications, backends, or agent workflows. The SDK exposes deposit, trade, send, request, and pay operations for apps and backends, while the MCP plugin exposes the same operations through the Model Context Protocol so AI agents can move funds on a user's behalf. Both surfaces build on the same underlying appchain account and privacy infrastructure as the main application. They are distributed as separate installable packages usable independently of the consumer app.

Ash Toolkit is an open-source developer tooling collection for Avalanche node operators and Subnet or L1 developers. It comprises an automation collection for provisioning and managing Avalanche nodes and blockchains, a command-line interface for interacting with and exploring Avalanche networks, and an underlying software library used to build custom Avalanche tooling. Node operators and developers use the toolkit to automate deployment, configuration, and monitoring tasks rather than performing them manually.

Databricks Data Intelligence Platform is a unified lakehouse platform combining data engineering, analytics, machine learning, and generative AI for enterprise data teams. The platform ingests and transforms data through automated pipelines, supports serverless data warehousing through an optimized query engine, and provides model training, serving, and retrieval infrastructure for building AI agents and applications. A governance layer applies unified access control, lineage tracking, and auditing across all data and AI assets, while built-in sharing capabilities allow secure data exchange across organizations. The platform is deployed across multiple major cloud providers and includes collaborative development environments, a machine learning lifecycle management system, and privacy-preserving data collaboration tools.

SwapKit is a cross-chain swap SDK and REST API for integrating non-custodial multi-chain trading into wallets, DEXs, and platforms. The system aggregates liquidity from THORChain, Chainflip, Maya Protocol, and NEAR Intents, routing transactions across multiple blockchains in a single user signature. It supports DEX aggregation, AML address screening, affiliate fee collection via on-chain router, and cross-chain transaction tracking through a partner management dashboard.

A REST API suite for programmatic access to BigONE exchange services. Covers four service areas: spot trading, wallet and asset management, instant conversion, and contract/derivatives trading. Uses JWT authentication and WebSocket streams for real-time market data and order updates. OpenAPI specifications are publicly available via GitHub.

The EVAA SDK is a developer library for programmatic integration with the EVAA lending protocol on the TON blockchain. It exposes methods for querying pool state, user positions, and interest rate data, and for executing deposit, borrow, repay, and withdrawal operations, while also handling the collection and serialization of oracle price packages required by the smart contracts. It is distributed independently on its own repository and documentation site, separate from the main EVAA application, and is used by developers building liquidation bots or third-party integrations.

APIs for staking workflows and rewards data across multiple blockchain networks, allowing developers to integrate staking functionality into their applications with standardized endpoints.

Marlowe is a domain-specific language and toolkit for creating financial smart contracts on Cardano with formal verification and automated testing capabilities.

Plinth is a programming language for Cardano smart contracts based on a restricted subset of Haskell, enabling formally verifiable on-chain logic development.

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.

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.

Garaga provides efficient elliptic curve operations and SNARK verification for Cairo and Starknet through optimized modular arithmetic circuits. Users can verify Groth16 and Honk proofs on-chain, perform multi-scalar multiplication across multiple curves, execute pairing operations for BN254 and BLS12-381, and verify ECDSA, Schnorr, and EdDSA signatures. The system enables smart contract verifier generation for various proof systems and provides maintained contracts for RISC Zero, SP1, and drand verification.

Walnut Debugger is a web-based transaction debugger and simulator for Starknet smart contracts, enabling developers to inspect variable states at each execution step and simulate transactions before on-chain deployment. The tool supports source-code-level debugging via contract verification, call trace inspection, and gas profiling against the CairoVM.

Walnut EVM is an open-source transaction debugger and simulator for EVM-compatible chains, supporting Ethereum, Arbitrum, Base, Optimism, Linea, and Katana. The tool traces transaction execution, enables re-simulation with custom calldata, and provides gas profiling; it can be self-hosted against any debug-capable RPC endpoint.

Cairo Playground is a browser-based interactive environment for exploring the CairoVM and writing Cairo code, allowing developers to experiment with Cairo, Sierra, and CASM with step-by-step execution debugging. The tool is hosted on cairovm.codes and targets Starknet and Cairo developers who want to prototype or test contract logic without a local setup.

Constellation implements unified API access through SDK integration, enabling developers to interact with decentralized AI subnets. The platform provides client libraries for accessing language models, data collection services, and scientific computing resources across the Bittensor network.

Apex is a conversational AI through subnet 1 infrastructure, enabling agentic workflows with tool access and chain-of-thought reasoning. The system provides OpenAI-compatible endpoints while maintaining decentralized model execution through miner competition.

Macrocosmos SDK implements developer tools through Python and TypeScript libraries, enabling integration with decentralized AI subnets. The toolkit provides client interfaces for Apex, Gravity, and Mainframe services with standardized API access patterns.

Fine-Tuning implements model optimization through subnet 37 infrastructure, enabling specialized model adaptation and performance enhancement. The system provides competitive mechanisms for improving model capabilities through targeted training approaches.

Pre-Training implements large language model training through subnet 9 infrastructure, enabling distributed model development and optimization. The system coordinates computational resources for training state-of-the-art language models through competitive incentive mechanisms.

Kalshi API provides REST endpoints, WebSocket connections, and FIX protocol access for algorithmic trading strategies. The system supports automated event contract trading with historical data access and real-time market feeds.

Nite Interface SDK is a developer toolkit that provides smart contracts, Dusk API access, wallet builder, and payment rails for building apps and clients on the Nite Protocol.

BitGifty Enterprise API is a REST API suite that enables platforms to integrate crypto gift card and crypto spending services into their own applications. The Crypto Gift Card API supports bulk gift card creation and distribution, white-label customization of email templates and redemption flows, real-time transaction tracking via webhooks, and both mainnet and testnet environments. The Crypto Spend API allows third-party applications to offer mobile airtime top-ups, utility bill payments, and brand gift card purchases to users paying with cryptocurrency.

Bity Trading is a Swiss brokerage and execution desk for large cryptocurrency transactions. It negotiates and settles large orders off-exchange through trusted counterparties, reducing market impact and slippage for asset managers, private banks, high-net-worth individuals, and corporations. The service also provides programmatic access to fiat-to-crypto, crypto-to-fiat, and crypto-to-crypto exchange execution for partners integrating the underlying trading capability. As a regulated Swiss financial intermediary, it handles compliance and settlement while keeping client data processed in Switzerland.

Longswipe for Business is a merchant platform enabling businesses to accept Longswipe vouchers as a form of checkout or payment with instant settlement into a preferred currency. Merchants create dedicated accounts to manage voucher redemption, appoint collectors who redeem vouchers on their behalf across multiple currencies, and integrate voucher-based checkout using software development kits for web, mobile, and desktop applications. The platform is aimed at event organizers, point-of-sale operators, and online merchants seeking cross-border payment acceptance without traditional exchange fees.

Klink Offer Integration API is a business-facing affiliate offer network platform that lets apps, games, and platforms embed partner offers to monetize their user base. Publishers integrate the offer inventory through a web-based iframe or a modular API, letting advertisers pay only for verified user actions such as installs, sign-ups, or purchases. The service manages offer publishing, deep-link routing, conversion tracking, geofencing, and localized payouts, and rewards can be issued as in-app currency, points, or tokens.

Flutterwave API is a payment processing API that enables businesses to accept payments from customers and send money to others through multiple payment methods including card payments, direct debit, bank transfers, and mobile money across African and global markets.

Flutterwave FaaS is a developer infrastructure platform that enables companies to embed financial services into their applications through unified APIs, providing KYC verification, account opening, branded debit card issuance, payment processing, and account servicing capabilities with built-in regulatory compliance and security.

Telegram-based monitoring service tracking validator node health, delegation status, commission changes, and lock-up cycles with instant notification delivery. The bot enables users to monitor multiple validators and delegations, receiving alerts for network issues, validator performance changes, and staking cycle events.

Unified Web3 development platform that consolidates APIs, SDKs, smart contract deployment, custodial wallet services, gamified learning through Vottun Journey quests, and code-to-earn incentives for developers building dApps and blockchain solutions.

x402-secure is an open-source SDK and proxy that adds verified identity, intent checks, and agent‑native risk controls to x402 payments, powered by Trustline risk analysis.

Sui Move Analyzer is a Visual Studio Code extension providing syntax highlighting, code completion, navigation, diagnostics, and framework integration for Move smart contract development on Sui blockchain.

Aptos Move Analyzer is a Visual Studio Code language server extension offering syntax highlighting, intelligent completion, navigation tools, and real-time diagnostics for Move development on Aptos blockchain.

Aptos Move Formatter is a code formatting tool developed in collaboration with Aptos Labs that automatically formats Move source code according to configurable style guidelines.

Move Web IDE is a browser-based integrated development environment for writing, testing, and deploying Move smart contracts without local installation requirements.

Sui Contract Source Verifier is a tool enabling developers to verify that deployed smart contract bytecode matches published source code on Sui blockchain.

Esper provides browser-based verification tools for contributing authenticated web data to AI agents. The system uses cryptography and secure hardware to create verifiable information without compromising user privacy.

HelloMoon Developer Platform is a developer tooling suite that provides blockchain infrastructure through APIs, RPC endpoints, and real-time data streaming. It gives developers access to standard and dedicated RPC nodes, gRPC streaming, and a transaction landing service that submits and accelerates settlement of transactions, charging only on successful delivery. The platform supports NFT analytics, DeFi monitoring, and cross-chain data access for teams building applications across multiple blockchain networks. Dedicated, premium-hardware nodes are also available for latency-sensitive or high-throughput workloads.

Sen Hub provides development infrastructure for Solana DApps through an integrated platform that enables application deployment, testing, and distribution. The system offers developer toolchains, sandbox testing environments, and marketplace distribution through Sen Store.

Storage Proof API provides developers with programmatic access to generate and verify storage proofs within applications. The API abstracts cryptographic complexity and integrates storage proof validation logic through a well-defined interface, allowing applications to implement cross-chain data verification without specialized knowledge of proof systems.

Herodotus Data Processor implements a framework for defining data sets and executing verifiable computations over blockchain data. The system uses STARK proofs and storage proofs to validate computation correctness, enabling applications to perform complex data processing while maintaining cryptographic integrity across blockchain networks.

Integrity Verifier implements STARK proof verification directly on Starknet for Layer 3 scalability. The system enables efficient validation of cryptographic proofs within the Starknet ecosystem, allowing developers to build advanced trust-minimized applications with enhanced verification capabilities on the network.

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.

Sandbox is a local development environment that enables developers to build and test privacy-focused smart contracts. The Sandbox simulates Aztec's Layer 2 functionality, allowing for experimentation with private and public execution environments.

Scrypto implements asset-oriented programming through Rust-based smart contract language, providing native asset primitives and blueprint deployment system. The framework enables secure DeFi development with built-in resource management and developer royalties.

MiniPay Mini Apps is a developer platform that lets third parties build and distribute web applications running inside MiniPay's in-app browser. Developers submit apps that gain instant access to a user's wallet and the underlying blockchain network without requiring separate onboarding or browser extensions. The platform provides wallet connection, transaction signing, and custom methods such as exchange rate lookups and QR scanning, enabling use cases including bill payments, prediction markets, vouchers, and games distributed to the wallet's user base.

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.

LYNC is an autonomous AI and Web3 layer that provides developers with a unified no-code platform for building on-chain products. The system integrates smart wallet infrastructure, AI agent tooling, and tokenization capabilities to enable cross-chain dApp development with reduced complexity and cost.

LYNC Paymaster is a gasless transaction infrastructure that enables users to interact with blockchain applications without holding native tokens for gas fees. The system simplifies user onboarding by abstracting gas payment requirements across supported blockchain networks.

LYNC Telegram Mini Apps is a no-code platform that enables users to deploy and manage Telegram mini applications. The system provides a dashboard interface for transforming Telegram presence and engaging audiences directly within Telegram's interface.

NDAX White Label Platform enables businesses to deploy cryptocurrency trading capabilities through plug-and-play infrastructure, providing customizable trading solutions with advanced security measures and API integration.

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.

Dexter MCP Server implements Model Context Protocol integration for ChatGPT, Claude, and other AI assistants, enabling authenticated agents to execute on-chain Solana operations through unified tool interfaces. The system provides OAuth2 authentication, session management, and tool bundles for wallet operations, market data retrieval, token swaps, and blockchain interactions. Developers can deploy via HTTPS transport for hosted connectors or stdio transport for local agent integration.

TDX Measurement Verification Tool is a web utility that calculates MRTD and RTMR measurements for Intel TDX trust domains from selected firmware, hardware, and software configurations. Users choose a firmware image, hardware configuration, and payload type, and the tool computes the corresponding measurement values used to verify a trust domain's configuration. It helps developers and data providers confirm that a deployed environment matches expected, tamper-evident configuration measurements.

MCPay SDK is a developer library that adds x402 wallet payment handling to MCP clients or custom apps. It intercepts 402 responses, pays on-chain with a configured wallet, and retries the tool call for programmatic pay-per-call access.

Resolute is a unified interface for Cosmos ecosystem interactions enabling users to connect wallets, manage multisig operations, execute cross-chain transactions, and participate in governance across multiple Cosmos SDK-based blockchains through a single dashboard.

J Tools is a no-code Solana workflow platform providing token creation for SPL and Token-2022 standards, authority management, multi-DEX liquidity pool deployment across Raydium, Meteora, and Orca, Pump.fun token launches with Jito bundle execution, token distribution, swap aggregation via Jupiter, and wallet privacy tools. The platform operates through a single wallet-connected interface with transparent cost previews before transaction signing.

NockApp is a framework for building applications that settle execution proofs to Nockchain. Applications use a two-component architecture: a kernel written in Hoon or Jock that compiles to the Nock instruction set architecture, containing formally verifiable application logic; and a Rust-based runtime providing a NockVM execution environment alongside I/O drivers for HTTP, file access, and gRPC networking. The kernel operates as a deterministic state machine with state persisted automatically by the runtime. Applications declare intents over Nockchain state, with off-chain logic generating zero-knowledge proofs submitted on-chain for verification. NockApps communicate with each other via gRPC for local and remote discoverability. The SDK includes stock I/O drivers, a Nockup build manager with application templates, and reference implementations including the Nockchain node and CLI wallet.

Spatial Streaming SDK is a developer toolkit for building and deploying real-time 3D spatial streaming applications, with plugin integrations for Unity and Unreal Engine. Applications built with the SDK connect to the Mawari Network's distributed compute infrastructure for rendering and low-latency delivery of spatial content to XR devices.

Starknet ID SDK provides JavaScript libraries for identity and domain resolution, enabling dApp integration with naming services. The toolkit implements profile data retrieval, domain encoding/decoding, and multicall optimization through standardized APIs and React components.

Kakarot implements a complete EVM in Cairo, enabling existing Solidity smart contracts to run on Starknet. The system combines STARK-based cryptography with full EVM compatibility, allowing developers to deploy and execute Ethereum applications within Starknet's high-performance environment while maintaining code compatibility.

Keth implements chain-agnostic EVM proving that generates ZK proofs of EVM block execution in real-time. The system can help optimistic rollups transition to ZK, reinforce existing ZK-rollups with multiple proof systems, and power ZK-bridges for cross-chain interoperability, all while leveraging Starkware's STARK technology for efficient proof generation.

Kakarot on Bitcoin enables Ethereum-compatible ZK-rollups secured by Bitcoin using OP_CAT and other opcodes. It allows the verification of ZK proofs directly on Bitcoin, enabling trust-minimized bridging of BTC to rollups and unlocking native DeFi capabilities while maintaining Bitcoin's security guarantees.

Secure Block Building implements cryptographic primitives that protect users from harmful MEV practices during block production. The system encrypts transactions directly in the user's browser with sub-second processing time. SBB utilizes Practical Verifiable Delay Encryption and Single Key Delay Encryption technologies to maintain rollup composability while preventing transaction reordering. The architecture includes slashing mechanisms enforced through native rollup security or shared security protocols. This configuration enables rollups to capture MEV revenue without exposing users to frontrunning or sandwiching attacks.

Tensorplex Dojo implements human-AI collaboration infrastructure through crowdsourced dataset collection protocols, enabling quality training data generation for machine learning models. The system facilitates real-time human feedback integration while rewarding contributors for AI development participation.