# Ecto vs Sequelize

**Leader by Vioscale score:** Sequelize

| Attribute | Ecto | Sequelize |
|---|---|---|
| **Vioscale score** | 51.9 (39% (low)) | 73.7 (72% (medium)) |
| activity.commits_last_30d | 12 | 7 |
| adoption.dependent_repos | 12,249 | 193,226 |
| adoption.github_stars | 6,487 | 30,377 |
| adoption.package_downloads_weekly | - | 2,842,247 |
| deployment.options | - | `{"self_hosted":true}` |
| description.long | A library that enables type-safe database queries and schema mapping for Elixir, supporting multiple database backends including PostgreSQL, MySQL, and SQLite with language-integrated querying. | 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 | `{"multi_db":true,"languages":"Elixir","relations":true,"schema_first":true,"type_safe_queries":true}` | `{"multi_db":true,"languages":"JavaScript, TypeScript","relations":true,"migrations":true,"schema_first":true,"type_safe_queries":true}` |
| integrations.count | 6 | - |
| integrations.list | `[{"name":"PostgreSQL"},{"name":"MySQL"},{"name":"MSSQL"},{"name":"SQLite3"},{"name":"ClickHouse"},{"name":"ETS"}]` | - |
| language.primary | Elixir | TypeScript |
| license.spdx | Apache-2.0 | MIT |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | - | `{"cli":true}` |
| pricing | `{"type":"open_source","sourceUrl":"https://hexdocs.pm/ecto","retrievedAt":"2026-08-14T08:32:02.160Z"}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://sequelize.org","retrievedAt":"2026-08-14T21:37:06.541Z"}` |
| pricing.free_tier | - | yes |
| pricing.model | open_source | commercial |
| pricing.price_level | free | free |
| pricing.transparent | - | yes |
| release.cadence_days | - | 20 |
| release.history | `[{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v3.4.5","date":"2020-07-28T19:18:20Z","type":"stable","version":"v3.4.5"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v2.2.0-rc.1","date":"2017-08-18T13:36:53Z","type":"prerelease","version":"v2.2.0-rc.1"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v2.0.1","date":"2016-06-21T13:18:18Z","type":"stable","version":"v2.0.1"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v2.0.0","date":"2016-06-21T13:18:36Z","type":"stable","version":"v2.0.0"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v1.1.8","date":"2016-06-21T13:19:18Z","type":"stable","version":"v1.1.8"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v1.1.7","date":"2016-06-21T13:19:35Z","type":"stable","version":"v1.1.7"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v1.1.6","date":"2016-06-21T13:19:58Z","type":"stable","version":"v1.1.6"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v1.1.5","date":"2016-04-19T10:08:50Z","type":"stable","version":"v1.1.5"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v1.1.4","date":"2016-04-19T10:08:36Z","type":"stable","version":"v1.1.4"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v1.1.3","date":"2016-02-22T10:46:14Z","type":"stable","version":"v1.1.3"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v1.1.2","date":"2016-02-22T10:46:01Z","type":"stable","version":"v1.1.2"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v1.1.1","date":"2015-12-23T15:32:10Z","type":"stable","version":"v1.1.1"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v1.1.0","date":"2015-12-23T15:31:55Z","type":"stable","version":"v1.1.0"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v1.0.7","date":"2015-12-23T15:34:06Z","type":"stable","version":"v1.0.7"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v1.0.6","date":"2015-12-23T15:33:53Z","type":"stable","version":"v1.0.6"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v1.0.5","date":"2015-12-23T15:33:36Z","type":"stable","version":"v1.0.5"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v1.0.4","date":"2015-12-23T15:33:16Z","type":"stable","version":"v1.0.4"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v1.0.3","date":"2015-12-23T15:32:50Z","type":"stable","version":"v1.0.3"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v1.0.2","date":"2015-09-07T13:16:29Z","type":"stable","version":"v1.0.2"},{"url":"https://github.com/elixir-ecto/ecto/releases/tag/v1.0.1","date":"2015-08-30T09:10:09Z","type":"stable","version":"v1.0.1"}]` | `[{"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.scorecard | 5.7 | 6.7 |
| security.vulnerabilities | `{"count":2,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=hex&package_name=ecto&per_page=100","last_12m":0,"max_severity":"CRITICAL"}` | `{"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 | Ecto | Sequelize |
|---|:--:|:--:|
| **Core** |  |  |
| Type-safe queries | ✓ | ✓ |
| Schema migrations | - | ✓ |
| Relations / joins API | ✓ | ✓ |
| Languages | Elixir | 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 2026-09-01T17:29:37.161Z. "-" = undocumented, not absent.*