# OpenZeppelin Contracts vs Slither

**Leader by vioscaleAI score:** Slither

| Attribute | OpenZeppelin Contracts | Slither |
|---|---|---|
| **vioscaleAI score** | 31.8 (31% (low)) | 38 (77% (high)) |
| activity.commits_last_30d | 0 | 0 |
| adoption.dependent_repos | - | 186 |
| adoption.github_stars | 214 | 6,378 |
| content.faq | `[{"answer":"Provides battle-tested smart contract code implementing ERC standards and security best practices for blockchain development, supporting Solidity, Cairo, Stellar, Sui, and other platforms. It is indexed under Blockchain Dev Tools.","source":"https://www.openzeppelin.com/contracts","question":"What is OpenZeppelin Contracts?","confidence":0.6},{"answer":"OpenZeppelin Contracts is open source, so it can be self-hosted and used at no licence cost. It is released under the AGPL-3.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://www.openzeppelin.com/contracts","question":"Is OpenZeppelin Contracts free to use?","confidence":0.6},{"answer":"OpenZeppelin Contracts supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://www.openzeppelin.com/contracts","question":"What platforms does OpenZeppelin Contracts support?","confidence":0.6},{"answer":"Yes. OpenZeppelin Contracts can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://www.openzeppelin.com/contracts","question":"Can OpenZeppelin Contracts be self-hosted?","confidence":0.6},{"answer":"Yes. OpenZeppelin Contracts is published under the AGPL-3.0 licence, a copyleft licence, so check its terms before embedding it in a closed-source product. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/openzeppelin/openzeppelin-skills","question":"Is OpenZeppelin Contracts open source?","confidence":0.95}]` | `[{"answer":"An open-source Python framework that scans smart contract source code for security issues using built-in detectors, generates visual contract analysis reports, and provides an extensible API for writing custom vulnerability checks. Enables developers to catch bugs before deployment and better understand contract behavior. It is indexed under Blockchain Dev Tools.","source":"https://github.com/pricing","question":"What is Slither?","confidence":0.6},{"answer":"Slither supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://github.com/pricing","question":"What platforms does Slither support?","confidence":0.6},{"answer":"Yes. Slither can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://github.com/pricing","question":"Can Slither be self-hosted?","confidence":0.6},{"answer":"We have confirmed 9 integrations for Slither, including GitHub Actions, Hardhat, Foundry, Brownie, Dapp, Pre-commit, Docker and Pyth Oracle detectors, plus 1 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://github.com/pricing","question":"What does Slither integrate with?","confidence":0.6},{"answer":"Yes. Slither is published under the AGPL-3.0 licence, a copyleft licence, so check its terms before embedding it in a closed-source product. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/crytic/slither","question":"Is Slither open source?","confidence":0.95}]` |
| deployment.options | `{"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | Provides battle-tested smart contract code implementing ERC standards and security best practices for blockchain development, supporting Solidity, Cairo, Stellar, Sui, and other platforms. | Detects issues in Solidity and Vyper smart contracts using static analysis, providing visual reports and a custom analysis API for security assessment. |
| features.capabilities | `{"open_source":true,"tooling_type":"contract-library","maintenance_status":"active","evm_compatible_only":false}` | `{"open_source":true,"tooling_type":"security-analysis","static_analysis_security_tool":true}` |
| integrations.count | - | 9 |
| integrations.list | - | `[{"name":"GitHub Actions"},{"name":"Hardhat"},{"name":"Foundry"},{"name":"Brownie"},{"name":"Dapp"},{"name":"Pre-commit"},{"name":"Docker"},{"name":"Pyth Oracle detectors"},{"name":"Chronicle detectors"}]` |
| language.primary | - | Python |
| license.spdx | AGPL-3.0 | AGPL-3.0 |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"web":true}` | `{"cli":true}` |
| pricing | `{"type":"free","plans":[{"free":true,"name":"Open Source","description":"Free access to OpenZeppelin Contracts library","contactSales":false}],"summary":"Free and open source","freeTier":true,"sourceUrl":"https://www.openzeppelin.com/contracts","retrievedAt":"2026-08-21T13:46:48.699Z"}` | `{"type":"open_source","sourceUrl":"https://github.com/pricing","retrievedAt":"2026-09-13T19:29:18.649Z"}` |
| pricing.free_tier | yes | - |
| pricing.model | commercial | open_source |
| pricing.price_level | free | free |
| release.cadence_days | - | 68 |
| release.history | - | `[{"url":"https://github.com/crytic/slither/releases/tag/0.11.6","date":"2026-07-28T21:32:01Z","type":"stable","version":"0.11.6"},{"url":"https://github.com/crytic/slither/releases/tag/0.11.5","date":"2026-01-16T19:46:08Z","type":"stable","version":"0.11.5"},{"url":"https://github.com/crytic/slither/releases/tag/0.11.4","date":"2026-01-15T18:59:47Z","type":"stable","version":"0.11.4"},{"url":"https://github.com/crytic/slither/releases/tag/0.11.3","date":"2025-04-18T11:59:42Z","type":"stable","version":"0.11.3"},{"url":"https://github.com/crytic/slither/releases/tag/0.11.2","date":"2025-04-16T20:43:29Z","type":"stable","version":"0.11.2"},{"url":"https://github.com/crytic/slither/releases/tag/0.11.1","date":"2025-04-15T18:17:55Z","type":"stable","version":"0.11.1"},{"url":"https://github.com/crytic/slither/releases/tag/0.11.0","date":"2025-02-03T20:13:08Z","type":"stable","version":"0.11.0"},{"url":"https://github.com/crytic/slither/releases/tag/0.10.4","date":"2024-08-23T13:33:25Z","type":"stable","version":"0.10.4"},{"url":"https://github.com/crytic/slither/releases/tag/0.10.3","date":"2024-06-05T23:40:47Z","type":"stable","version":"0.10.3"},{"url":"https://github.com/crytic/slither/releases/tag/0.10.2","date":"2024-04-08T13:08:21Z","type":"stable","version":"0.10.2"},{"url":"https://github.com/crytic/slither/releases/tag/0.10.1","date":"2024-02-29T21:05:55Z","type":"stable","version":"0.10.1"},{"url":"https://github.com/crytic/slither/releases/tag/0.10.0","date":"2023-10-18T15:16:39Z","type":"stable","version":"0.10.0"},{"url":"https://github.com/crytic/slither/releases/tag/0.9.6","date":"2023-07-06T16:34:34Z","type":"stable","version":"0.9.6"},{"url":"https://github.com/crytic/slither/releases/tag/0.9.5","date":"2023-06-28T12:47:32Z","type":"stable","version":"0.9.5"},{"url":"https://github.com/crytic/slither/releases/tag/0.9.4","date":"2023-06-26T18:40:46Z","type":"stable","version":"0.9.4"},{"url":"https://github.com/crytic/slither/releases/tag/0.9.3","date":"2023-03-20T17:34:20Z","type":"stable","version":"0.9.3"},{"url":"https://github.com/crytic/slither/releases/tag/0.9.2","date":"2023-01-11T17:06:54Z","type":"stable","version":"0.9.2"},{"url":"https://github.com/crytic/slither/releases/tag/0.9.1","date":"2022-11-03T20:26:55Z","type":"stable","version":"0.9.1"},{"url":"https://github.com/crytic/slither/releases/tag/0.9.0","date":"2022-10-05T13:43:15Z","type":"stable","version":"0.9.0"},{"url":"https://github.com/crytic/slither/releases/tag/0.8.3","date":"2022-04-21T17:00:40Z","type":"stable","version":"0.8.3"}]` |
| security.scorecard | - | 7 |
| security.trust_center | - | https://github.com/security |
| security.vulnerabilities | - | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=slither-analyzer&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Blockchain Dev Tools)

| Capability | OpenZeppelin Contracts | Slither |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Tooling type | Contract library | Security analysis |
| Evm compatible only | ✗ | - |
| Local dev network | - | - |
| Native fuzzing invariant testing | - | - |
| Mainnet forking | - | - |
| Contract verification integration | - | - |
| Trace debugger | - | - |
| Gas profiling | - | - |
| Archive node access | - | - |
| Graphql indexing | - | - |
| Static analysis security tool | - | ✓ |
| Open source | ✓ | ✓ |
| Maintenance status | Active | - |

*Source: vioscaleAI. Generated 2026-10-17T23:28:44.517Z. "-" = undocumented, not absent.*