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Alternatives · 2026

The best Flay alternatives

The rest of Best Ruby Static Analysis Tools, in this site's order: each with what it costs, where it runs and its record score.

1
DeepSource

It suits software teams looking to automate pull-request review and scan code or infrastructure for security issues.

WebWindowsMac+3 $30 a month, billed yearly Record6.0 Visit
2
GitHub CodeQL

CodeQL suits developers and security researchers who need to analyze code for security and other quality issues.

WebWindowsMac+3 Free plan Record5.7 Visit
3
Qlty Cloud

Qlty Cloud suits development teams that want code and coverage feedback in pull requests, with customizable rules and GitHub workflows.

WebWindowsMac+3 $20 a month Record5.3 Visit
4
Codacy

Codacy suits engineering teams that want pull request review, security scanning, and shared coding standards.

WebBrowser extension $18 a year Record5.2 Visit
5 WebMacLinux+2 $30 a month Record5.1 Visit
6 MacLinux Free plan Record4.5 Visit
7
Reek

Reek suits Ruby developers who want configurable code-smell reports for files, directories, or standard input.

Linux Free plan Record4.5 Visit
8 LinuxSelf-hosted Free plan Record4.5 Visit
9
Brakeman

Brakeman suits developers and teams maintaining Ruby on Rails applications who want automated source-code security checks in development or CI…

LinuxSelf-hosted Free plan Record4.4 Visit
10
Dawnscanner

Dawnscanner may suit developers working on Ruby web applications who want local static analysis for supported frameworks.

LinuxSelf-hosted Free plan Record4.2 Visit
11 WindowsMacLinux Free plan Record3.2 Visit
12 WindowsMacLinux Free plan Record3.2 Visit
13 WindowsMacLinux Free plan Record3.2 Visit
14 WebWindowsMac+1 — Record3.0 Visit
15 Web Free plan Record3.0 Visit
16 MacLinux Free plan Record3.0 Visit
17 Free plan Record2.7 Visit
18 Free plan Record2.7 Visit
19 Free plan Record2.7 Visit
20 Free plan Record2.7 Visit