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Sleek

Free#10 of 25 in SQL Linters and FormattersTo-Do List Apps

Sleek: A focused, free formatter for six SQL dialects with useful VS Code workflows. Ranked #10 of 25 in SQL Linters and Formatters by our editors (7.7/10); pricing: Free plan; best for VS Code users wanting simple multi-dialect formatting.

7.7/10Editor score
Visit Sleek
Sleek7.7 Visit Sleek

At a glance

  • Editor score
    7.7 / 10
  • Pricing
    Free plan
  • Best for
    VS Code users wanting simple multi-dialect formatting
  • Free plan
    Yes
  • Paid from
    Free
  • Supported SQL dialects
    PostgreSQL, MySQL, MariaDB, SQLite, SQL Server, Oracle
  • Automatic fixes
    Yes
  • Facts checked
    20 Sep 2026
Sleek screenshot

  • Where it wins

    • Formats six SQL dialects from the CLI or VS Code
    • Supports glob patterns, standard input, and check-only mode
    • Offers format-on-save and format-on-paste in VS Code

  • Where it doesn't

    • No custom rules for project-specific formatting standards
    • No CI integration
    • Primarily a formatter rather than a full SQL linter

Our verdict on Sleek

Sleek is an open-source SQL formatting tool for developers who want consistent style across SQL files and queries. Its Rust-based command-line interface formats files, glob patterns, or standard input, while check-only mode verifies formatting without changing files. Sleek supports PostgreSQL, MySQL, MariaDB, SQLite, SQL Server, and Oracle, making it a practical fit for teams working across several common SQL dialects. Windows, macOS, and Linux are supported, and the VS Code extension adds document and selection formatting.

The strongest part of Sleek is its formatting control without a large configuration surface. Developers can set indentation, keyword casing, spacing between queries, and trailing-newline behavior. Glob support helps apply formatting across multiple files, while check-only mode provides a non-modifying workflow for reviewing consistency. These capabilities suit individual developers and small teams that want predictable SQL presentation without adopting a broader linting system. Sleek has no custom rules, so it is less suitable when a project needs organization-specific checks beyond its built-in formatting options.

VS Code users get the most complete experience. The extension supports format-on-save and format-on-paste, status indicators, and automatic CLI downloading and update checking. That combination reduces the setup work required to bring command-line formatting into an editor workflow. Sleek remains a narrow tool: it focuses on formatting rather than providing a full SQL linting feature set, and it has no CI integration. Choose it for straightforward multi-dialect formatting in VS Code or scripted file workflows; choose an alternative when custom rules, broader linting, or CI-focused enforcement is required.

Your product? Our editors can test Sleek in depth and publish a review, labelled as paid · from $149/mo →

Sleek pricing

Plans Free planFree Free to use — no paid tier required for the core job.
See plans on github.com

Sleek fact sheet

Free planYes
Paid fromFree
Supported SQL dialectsPostgreSQL, MySQL, MariaDB, SQLite, SQL Server, Oracle
Automatic fixesYes
Custom rulesNo
Editor extensionsYes
CI/CD integrationNot verified
Configuration fileNot verified
DeploymentDesktop
PlatformsWindows, macOS, Linux
SupportCommunity, Docs
Built forSolo, Small business, Mid-market (editorial estimate)
Integrations1 integrations: Visual Studio Code
PricingFree plan
Websitegithub.com
Facts checked20 Sep 2026

Sleek integrations

Sleek lists 1 integrations on its own site.

  • Visual Studio Code

Alternatives to Sleek

See all Sleek alternatives →

Also Ranked In

Sleek is ranked in 2 of our directories.

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Featured on iTechGuides

Featured on iTechGuides — Sleek 7.7/10

Sleek is listed in our SQL Linters and Formatters directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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