OpenZeppelin

Name: OpenZeppelin
Brand: OpenZeppelin
Rating: 5 (1 reviews)

Unclaimed

The standard for secure onchain applications, enabling building, securing, and operating across 30+ chains.

Blockchain Development Developer Tools Security

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Reviews onG2

1 reviews tracked·2 press mentions

The Bottom Line

Entry price

Free, no paid tier

Biggest pro

Accelerates development with battle-tested contract libraries

Biggest con

Specific pricing details are not immediately available on the main page

TL;DR - OpenZeppelin

Provides battle-tested smart contract libraries for secure onchain development.
Offers gold-standard security audits for smart contracts and blockchain infrastructure.
Includes operational tools for secure transaction management and threat monitoring.

Pricing: Free forever

Best for: Individuals & startups

What is OpenZeppelin?

Editorial review

OpenZeppelin provides a comprehensive suite of tools and services for developing, securing, and operating decentralized applications (dApps) and smart contracts. It offers battle-tested contract libraries for Solidity and Cairo, accelerating development and minimizing risk for various use cases like tokens, DeFi, governance, gaming, and NFTs. Developers can leverage pre-built templates for common contract types like ERC20, ERC721, ERC1155, and Governor contracts, and customize them for deployment. Beyond development, OpenZeppelin specializes in security audits, offering gold-standard code reviews for smart contracts, Zero-Knowledge Proofs (ZKPs), and blockchain infrastructure. Their security researchers identify critical vulnerabilities and protect decentralized systems across multiple languages. For ongoing operations, OpenZeppelin provides tools like Relayer for transaction management and Monitor for risk detection, alerting, and automated threat resolution, supporting over 30 mainnet and testnet networks. This platform is ideal for blockchain developers, project teams, and organizations building and maintaining secure onchain applications. It streamlines the development lifecycle from initial contract creation to deployment and continuous operation, ensuring high standards of security and reliability.

Available on: Web

LCLouis CorneloupUpdated May 26, 2026 · how we evaluateSourceopenzeppelin.com ↗

Pros & Cons

Pros

Accelerates development with battle-tested contract libraries
Enhances security through expert audits and vulnerability detection
Simplifies operations with robust transaction and monitoring tools
Supports a wide range of blockchain use cases and languages
Trusted by leading projects in the blockchain space

Cons

Specific pricing details are not immediately available on the main page
Requires technical expertise in blockchain development to fully utilize

Ratings Across the Web

5(1 reviews)

G21 reviews

5/5

Ratings aggregated from independent review platforms. Learn more

Preview

Key Features

Smart contract libraries for Solidity and CairoPre-built templates for ERC20, ERC721, ERC1155, and Governor contractsCustomizable smart contract deploymentSecurity audits for smart contracts, ZKP, and infrastructureRelayer for transaction API, secure key storage, and transaction managementMonitor for risk insights, threat detection, alerting, and anomaly resolutionSupport for over 30 mainnet and testnet networks

Pricing Plans

Pricing checked May 29, 2026

Community Public Goods

Free

Ethernaut CTF
Authoring and co-authoring numerous EIPs and ERCs
Contracts Library and Plugins
Security Standards and Community Initiatives
Five zero-day vulnerabilities uncovered
Supporting top protocols to Build, Secure & Operate onchain

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OpenZeppelin FAQ

How does OpenZeppelin assist in the development of new tokens?

OpenZeppelin provides battle-tested contract libraries for Solidity and Cairo, which include pre-built templates for common token standards like ERC20, ERC721, and ERC1155. This allows developers to accelerate the creation and customization of various token types, minimizing development risk.

Which teams benefit most from using OpenZeppelin?

OpenZeppelin is ideal for blockchain developers, project teams, and organizations that are building and maintaining secure onchain applications. It streamlines the entire development lifecycle, from initial contract creation to deployment and continuous operation, ensuring high standards of security and reliability.

What kind of security services does OpenZeppelin offer beyond development tools?

Beyond development tools, OpenZeppelin specializes in security audits, providing expert code reviews for smart contracts, Zero-Knowledge Proofs (ZKPs), and blockchain infrastructure. Their security researchers focus on identifying critical vulnerabilities to protect decentralized systems across multiple languages.

How is OpenZeppelin priced?

OpenZeppelin is free to use, meaning there is no paid plan required to access its comprehensive suite of tools and services. This allows developers and organizations to leverage its capabilities without an upfront cost.

Can OpenZeppelin help with ongoing operations of decentralized applications?

Yes, OpenZeppelin provides tools for ongoing operations, such as Relayer for transaction management and Monitor for risk detection, alerting, and automated threat resolution. These tools support over 30 mainnet and testnet networks, helping to maintain the security and functionality of dApps.

How does OpenZeppelin compare to a platform like Tenderly?

OpenZeppelin focuses on providing battle-tested contract libraries and expert security audits to accelerate development and minimize risk for smart contracts and dApps. While Tenderly offers monitoring and debugging tools, OpenZeppelin provides a broader suite covering development, security, and operations across 30+ chains.

What are the primary trade-offs when adopting OpenZeppelin?

A primary trade-off when adopting OpenZeppelin is that it requires technical expertise in blockchain development to fully utilize its features. While it simplifies many aspects of dApp creation, a foundational understanding of blockchain concepts is necessary.

Source: openzeppelin.com

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