# Atlas vs Sequelize

**Leader by Vioscale score:** Sequelize

| Attribute | Atlas | Sequelize |
|---|---|---|
| **Vioscale score** | 52.2 (56% (medium)) | 73.7 (72% (medium)) |
| activity.commits_last_30d | 1 | 7 |
| adoption.dependent_repos | 593 | 193,226 |
| adoption.github_stars | 8,684 | 30,377 |
| adoption.package_downloads_weekly | - | 2,842,247 |
| deployment.options | `{"cloud":true,"on_prem":true,"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | A tool for managing database schemas declaratively as code, supporting schema migrations, security policies, data lineage, and multiple database backends. Includes both open-source and cloud-hosted versions with audit capabilities. | Sequelize is an ORM that bridges JavaScript and TypeScript applications with multiple relational databases including PostgreSQL, MySQL, MariaDB, SQLite, Oracle, SQL Server, Snowflake, and DB2. It provides declarative schema modeling, relationship definitions, transaction support, and flexible data loading strategies. |
| features.capabilities | `{"raw_sql":true,"multi_db":true,"languages":"Multiple databases: PostgreSQL, MySQL, MariaDB, MSSQL, SQLite, Oracle, Snowflake","relations":true,"migrations":true,"studio_gui":true,"schema_first":true}` | `{"multi_db":true,"languages":"JavaScript, TypeScript","relations":true,"migrations":true,"schema_first":true,"type_safe_queries":true}` |
| integrations.count | 3 | - |
| integrations.list | `[{"name":"GitHub"},{"name":"AWS Marketplace"},{"name":"Slack"}]` | - |
| language.primary | Go | TypeScript |
| license.spdx | Apache-2.0 | MIT |
| market.availability | `{"hqCountry":"US","primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"web":true}` | `{"cli":true}` |
| pricing | `{"type":"hybrid","plans":[{"free":true,"name":"Open Source","description":"Community edition under Apache 2.0 license"},{"free":false,"name":"Atlas Pro","description":"Professional edition with additional features","contactSales":false},{"free":false,"name":"Atlas Cloud","description":"Managed cloud offering","contactSales":false}],"summary":"Free open-source tier; Atlas Pro and Cloud pricing TBD","freeTier":true,"sourceUrl":"https://atlasgo.io/blog/2024/03/03/pricing-change","retrievedAt":"2026-08-14T08:36:24.805Z"}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://sequelize.org","retrievedAt":"2026-08-14T21:37:06.541Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | commercial |
| pricing.price_level | low | free |
| pricing.transparent | yes | yes |
| release.cadence_days | 40 | 20 |
| release.history | `[{"url":"https://github.com/ariga/atlas/releases/tag/v1.3.0","date":"2026-08-02T09:09:55Z","type":"stable","version":"v1.3.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v1.2.0","date":"2026-04-10T12:36:43Z","type":"stable","version":"v1.2.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v1.1.0","date":"2026-02-05T03:07:28Z","type":"stable","version":"v1.1.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v1.0.0","date":"2025-12-24T20:12:16Z","type":"stable","version":"v1.0.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v0.38.0","date":"2025-10-30T12:17:17Z","type":"stable","version":"v0.38.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v0.37.0","date":"2025-09-17T18:15:29Z","type":"stable","version":"v0.37.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v0.36.0","date":"2025-07-21T12:11:57Z","type":"stable","version":"v0.36.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v0.35.0","date":"2025-06-10T14:22:25Z","type":"stable","version":"v0.35.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v0.34.0","date":"2025-05-29T14:37:56Z","type":"stable","version":"v0.34.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v0.33.0","date":"2025-05-12T20:11:41Z","type":"stable","version":"v0.33.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v0.32.0","date":"2025-03-10T19:24:31Z","type":"stable","version":"v0.32.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v0.31.0","date":"2025-02-06T12:17:03Z","type":"stable","version":"v0.31.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v0.30.0","date":"2025-01-06T19:43:02Z","type":"stable","version":"v0.30.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v0.29.0","date":"2024-11-27T09:16:43Z","type":"stable","version":"v0.29.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v0.28.0","date":"2024-10-01T20:24:07Z","type":"stable","version":"v0.28.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v0.27.0","date":"2024-09-03T10:42:41Z","type":"stable","version":"v0.27.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v0.26.0","date":"2024-08-09T06:53:09Z","type":"stable","version":"v0.26.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v0.25.0","date":"2024-07-09T11:48:02Z","type":"stable","version":"v0.25.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v0.24.0","date":"2024-06-14T11:07:07Z","type":"stable","version":"v0.24.0"},{"url":"https://github.com/ariga/atlas/releases/tag/v0.23.0","date":"2024-05-21T12:11:55Z","type":"stable","version":"v0.23.0"}]` | `[{"url":"https://github.com/sequelize/sequelize/releases/tag/v6.37.8","date":"2026-03-07T18:44:44Z","type":"stable","version":"v6.37.8"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v7.0.0-alpha.48","date":"2026-02-04T13:52:17Z","type":"prerelease","version":"v7.0.0-alpha.48"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v7.0.0-alpha.47","date":"2025-10-25T08:02:02Z","type":"prerelease","version":"v7.0.0-alpha.47"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v6.37.7","date":"2025-03-28T11:35:01Z","type":"stable","version":"v6.37.7"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v7.0.0-alpha.46","date":"2025-03-22T20:59:50Z","type":"prerelease","version":"v7.0.0-alpha.46"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v6.37.6","date":"2025-03-04T10:38:26Z","type":"stable","version":"v6.37.6"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v7.0.0-alpha.45","date":"2025-02-17T13:59:21Z","type":"prerelease","version":"v7.0.0-alpha.45"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v7.0.0-alpha.44","date":"2025-01-27T07:32:05Z","type":"prerelease","version":"v7.0.0-alpha.44"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v6.37.5","date":"2024-10-25T12:30:39Z","type":"stable","version":"v6.37.5"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v7.0.0-alpha.43","date":"2024-10-04T14:13:01Z","type":"prerelease","version":"v7.0.0-alpha.43"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v6.37.4","date":"2024-10-04T14:21:15Z","type":"stable","version":"v6.37.4"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v7.0.0-alpha.42","date":"2024-09-13T13:40:39Z","type":"prerelease","version":"v7.0.0-alpha.42"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v7.0.0-alpha.41","date":"2024-05-17T14:56:35Z","type":"prerelease","version":"v7.0.0-alpha.41"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v6.37.3","date":"2024-04-13T20:54:30Z","type":"stable","version":"v6.37.3"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v7.0.0-alpha.40","date":"2024-04-11T17:31:50Z","type":"prerelease","version":"v7.0.0-alpha.40"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v6.37.2","date":"2024-03-29T18:55:34Z","type":"stable","version":"v6.37.2"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v7.0.0-alpha.39","date":"2024-03-22T17:25:56Z","type":"prerelease","version":"v7.0.0-alpha.39"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v7.0.0-alpha.38","date":"2024-03-19T08:38:28Z","type":"prerelease","version":"v7.0.0-alpha.38"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v7.0.0-alpha.37","date":"2024-02-10T13:55:26Z","type":"prerelease","version":"v7.0.0-alpha.37"},{"url":"https://github.com/sequelize/sequelize/releases/tag/v6.37.1","date":"2024-02-18T00:44:09Z","type":"stable","version":"v6.37.1"}]` |
| reliability.status_page | yes | - |
| security.disclosure_policy | - | yes |
| security.gdpr | yes | - |
| security.scorecard | 5.8 | 6.7 |
| security.soc2 | yes | - |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=ariga.io%2Fatlas&per_page=100","last_12m":0,"max_severity":null}` | `{"count":19,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=sequelize&per_page=100","last_12m":2,"max_severity":"CRITICAL"}` |

## Capabilities (ORM & Database Tools)

| Capability | Atlas | Sequelize |
|---|:--:|:--:|
| **Core** |  |  |
| Type-safe queries | - | ✓ |
| Schema migrations | ✓ | ✓ |
| Relations / joins API | ✓ | ✓ |
| Languages | Multiple databases: PostgreSQL, MySQL, MariaDB, MSSQL, SQLite, Oracle, Snowflake | JavaScript, TypeScript |
| **Modelling** |  |  |
| Schema-first modelling | ✓ | ✓ |
| **Flexibility** |  |  |
| Raw SQL escape hatch | ✓ | - |
| **Portability** |  |  |
| Multiple database backends | ✓ | ✓ |
| **Ops** |  |  |
| Connection pooling | - | - |
| **DX** |  |  |
| Data browser / studio | ✓ | - |

*Source: Vioscale. Generated 2026-09-01T14:39:58.071Z. "-" = undocumented, not absent.*