# Blockscout vs OpenZeppelin Contracts

**Leader by vioscaleAI score:** Blockscout

| Attribute | Blockscout | OpenZeppelin Contracts |
|---|---|---|
| **vioscaleAI score** | 54.9 (65% (medium)) | 31.8 (31% (low)) |
| activity.commits_last_30d | 68 | 0 |
| adoption.dependent_repos | 0 | - |
| adoption.github_stars | 4,741 | 214 |
| content.faq | `[{"answer":"An open-source block explorer that allows users to search transactions, verify smart contracts, and access analytics across multiple EVM-compatible blockchains from a single interface, with support for hundreds of chains, rollups, L2s, and testnets. It is indexed under Blockchain Dev Tools.","source":"https://www.blockscout.com","question":"What is Blockscout?","confidence":0.6},{"answer":"We have confirmed browser-based access to Blockscout. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.","source":"https://www.blockscout.com","question":"What platforms does Blockscout support?","confidence":0.6},{"answer":"Yes. Blockscout can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://www.blockscout.com","question":"Can Blockscout be self-hosted?","confidence":0.6}]` | `[{"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}]` |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | An open-source block explorer that enables users to search transactions, token transfers, and smart contracts across multiple blockchain networks from a single interface. It supports both cloud and self-hosted deployment options. | Provides battle-tested smart contract code implementing ERC standards and security best practices for blockchain development, supporting Solidity, Cairo, Stellar, Sui, and other platforms. |
| features.capabilities | `{"open_source":true,"tooling_type":"block-explorer","trace_debugger":true,"local_dev_network":true,"maintenance_status":"active","evm_compatible_only":false,"contract_verification_integration":true}` | `{"open_source":true,"tooling_type":"contract-library","maintenance_status":"active","evm_compatible_only":false}` |
| language.primary | Elixir | - |
| license.spdx | - | AGPL-3.0 |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"web":true}` | `{"cli":true,"web":true}` |
| pricing | `{"type":"free","freeTier":true,"sourceUrl":"https://www.blockscout.com","retrievedAt":"2026-10-13T22:35:21.007Z"}` | `{"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"}` |
| pricing.free_tier | yes | yes |
| pricing.model | free | commercial |
| pricing.price_level | free | free |
| release.cadence_days | 6 | - |
| release.history | `[{"url":"https://github.com/blockscout/blockscout/releases/tag/v12.0.1","date":"2026-10-12T07:17:11Z","type":"stable","version":"v12.0.1"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v12.0.0","date":"2026-10-06T14:52:35Z","type":"stable","version":"v12.0.0"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.3.3","date":"2026-10-02T12:06:00Z","type":"stable","version":"v11.3.3"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.3.2","date":"2026-09-21T16:59:26Z","type":"stable","version":"v11.3.2"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.3.1","date":"2026-09-16T11:58:42Z","type":"stable","version":"v11.3.1"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.3.0","date":"2026-09-10T14:00:18Z","type":"stable","version":"v11.3.0"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.2.8","date":"2026-08-26T09:31:24Z","type":"stable","version":"v11.2.8"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.2.7","date":"2026-08-18T12:46:33Z","type":"stable","version":"v11.2.7"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.2.6","date":"2026-08-10T11:18:38Z","type":"stable","version":"v11.2.6"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.2.5","date":"2026-08-07T13:38:49Z","type":"stable","version":"v11.2.5"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.2.4","date":"2026-08-04T09:48:11Z","type":"stable","version":"v11.2.4"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.2.3","date":"2026-07-24T16:19:05Z","type":"stable","version":"v11.2.3"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.2.2","date":"2026-07-03T14:58:51Z","type":"stable","version":"v11.2.2"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.2.1","date":"2026-06-18T15:53:21Z","type":"stable","version":"v11.2.1"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.2.0","date":"2026-06-17T10:45:44Z","type":"stable","version":"v11.2.0"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.1.3","date":"2026-06-02T13:30:16Z","type":"stable","version":"v11.1.3"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.1.2","date":"2026-05-27T12:35:45Z","type":"stable","version":"v11.1.2"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.1.1","date":"2026-05-25T14:09:41Z","type":"stable","version":"v11.1.1"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.1.0","date":"2026-05-25T10:21:29Z","type":"stable","version":"v11.1.0"},{"url":"https://github.com/blockscout/blockscout/releases/tag/v11.0.3","date":"2026-05-08T13:11:29Z","type":"stable","version":"v11.0.3"}]` | - |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=helm&package_name=ethereum-helm-charts%2Fblockscout&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Blockchain Dev Tools)

| Capability | Blockscout | OpenZeppelin Contracts |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Tooling type | Block explorer | Contract library |
| 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 | Active |

*Source: vioscaleAI. Generated 2026-10-17T05:47:29.691Z. "-" = undocumented, not absent.*