vioscaleAI
Comparison

Flyway vs Kysely

On the evidence we track, Kysely leads this comparison with a composite score of 74/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Flyway full profile →Kysely full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Flyway54
★Kysely74
Score
vioscaleAI score
Flyway54 / 100medium · 50%
Kysely74 / 100high · 78%
Pricing
Free tier
Flyway✓
Kysely✓
Model
Price level
Flywaylow
Kyselyfree
Transparent
Flyway✗
Kysely✓
Integrations
Count
Flyway1
Kysely21
Security
Scorecard
Flyway4.8
Kysely7.2
Vulnerabilities
Adoption
Dependent repos
Flyway30,708
Kysely1,155
Github stars
Flyway10,142
Kysely14,269
Package downloads weekly
Flyway–
Kysely20,754,444
Activity
Commits last 30d
Flyway5
Kysely59
Release
Cadence days
Flyway8
Kysely10
History
Flyway20 items
Kysely20 items
License
Spdx
FlywayApache-2.0
KyselyMIT
Language
Primary
FlywayJava
KyselyTypeScript
Market
Availability
Content
Faq
Flyway7 items
Kysely6 items

Capabilities

Feature-by-feature on the axes that matter for orm & database tools. “-” means undocumented, not absent.

Core
Type-safe queries
Flyway-
Kysely✓
Schema migrations
Flyway✓
Kysely✓
Relations / joins API
Flyway-
Kysely✓
Languages
FlywayJava; Maven/Gradle plugins; integrations for multiple build frameworks
KyselyTypeScript, JavaScript (Node, Deno, Bun, Cloudflare Workers, browsers)
Modelling
Schema-first modelling
Flyway✓
Kysely✓
Flexibility
Raw SQL escape hatch
Flyway✓
Kysely✓
Portability
Multiple database backends
Flyway✓
Kysely✓
Ops
Connection pooling
Flyway-
Kysely✗
DX
Data browser / studio
Flyway✓
Kysely✗

What each one is

The product in its own terms, so the numbers below have context.

Flyway

A database migration tool that applies version-controlled schema changes to database instances using SQL. Supports 60+ database platforms and has been maintained by Redgate since 2010.

Independently observed

Kysely

Leader

A JavaScript and TypeScript SQL query builder that provides compile-time type safety and database schema validation. It works across multiple runtimes (Node, Deno, Bun, Cloudflare Workers, browsers) with zero runtime dependencies and emphasizes composable, type-safe queries over higher-level abstractions.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Flyway

freemiumFree tier

Free open-source Community edition; Enterprise edition available

  • CommunityFree
  • EnterpriseContact sales
as of verify ↗

Kysely

Leader
Open sourceFree tier

Completely free and open source (MIT license)

as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Flyway✗
Kysely✓
macOS
Flyway✓
Kysely✗
Windows
Flyway✓
Kysely✗
Linux
Flyway✓
Kysely✗
CLI
Flyway✓
Kysely✗
Deployment
Cloud / SaaS
Flyway✓
Kysely✓
Self-hosted
Flyway✓
Kysely✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Flyway

12 total
  • Maven
  • Gradle
  • SBT
  • Ant
  • Spring Boot
  • Grails
  • Play!
  • DropWizard
  • Grunt
  • Griffon
  • Ninja
  • SQL Fluff
Independently observed

Kysely

Leader
25 total
  • Supabase
  • Cursor
  • Windsurf
  • GitHub Copilot
  • ChatGPT
  • Claude
  • Claude Code
  • AirTrail
  • AWS Blocks
  • Conar
  • EmbedPDF
  • Hot Updater
  • inlang
  • Notesnook
  • OpenClaw
  • Reflect
  • Sink
  • Stacks
  • StudioCMS
  • Tunarr
  • ZenStack
  • PostgreSQL
  • MySQL
  • SQLite
  • +1 more
Independently observed
Still deciding?

Flyway or Kysely: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.