Alternatives

RefactorFirst alternatives for AI agents.

Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.

Current skill

RefactorFirst

Identifies and prioritizes God Classes Highly Coupled classes, and Class Cycles in Java codebases you should refactor first.

84
Quality
89
Trust
525
Stars
#1

Checkstyle

Similarity 124Trust 97Excellent 100

Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. By default it supports the Google Java Style Guide and Sun Code Conventions, but is highly configurable. It can be invoked with an ANT task and a command line program.

8.9K starsJun 16, 2026 pushdevelopmentJavaStatic Analysis
$ npx skills add checkstyle/checkstyle
#2

Sonarqube

Similarity 124Trust 95Excellent 100

Continuous Inspection

11K starsJun 12, 2026 pushdevelopmentJavaStatic Analysis
$ npx skills add SonarSource/sonarqube
#3

Recaf

Similarity 123Trust 94Excellent 100

The modern Java bytecode editor

7.2K starsJun 15, 2026 pushdevelopmentJavaStatic Analysis
$ npx skills add Col-E/Recaf
#4

Error Prone

Similarity 123Trust 94Excellent 100

Catch common Java mistakes as compile-time errors

7.2K starsJun 15, 2026 pushdevelopmentJavaStatic Analysis
$ npx skills add google/error-prone
#5

NullAway

Similarity 122Trust 96Excellent 100

A tool to help eliminate NullPointerExceptions (NPEs) in your Java code with low build-time overhead

4.1K starsJun 15, 2026 pushdevelopmentJavaStatic Analysis
$ npx skills add uber/NullAway
#6

Spotbugs

Similarity 122Trust 96Excellent 100

SpotBugs is FindBugs' successor. A tool for static analysis to look for bugs in Java code.

3.9K starsJun 13, 2026 pushdevelopmentJavaStatic Analysis
$ npx skills add spotbugs/spotbugs
#7

Pmd

Similarity 122Trust 90Excellent 100

An extensible multilanguage static code analyzer.

5.4K starsJun 12, 2026 pushdevelopmentJavaStatic Analysis
$ npx skills add pmd/pmd
#8

Find Sec Bugs

Similarity 121Trust 94Excellent 99

The SpotBugs plugin for security audits of Java web applications and Android applications. (Also work with Kotlin, Groovy and Scala projects)

2.4K starsMar 26, 2026 pushdevelopmentJavaStatic Analysis
$ npx skills add find-sec-bugs/find-sec-bugs
#9

Soot

Similarity 121Trust 89Excellent 100

Soot - A Java optimization framework

3.1K starsMay 29, 2026 pushdevelopmentJavaStatic Analysis
$ npx skills add soot-oss/soot
#10

Tai E

Similarity 121Trust 93Excellent 100

An easy-to-learn/use static analysis framework for Java and Android

1.8K starsJun 9, 2026 pushdevelopmentJavaStatic Analysis
$ npx skills add pascal-lab/Tai-e
#11

Jspecify

Similarity 120Trust 96Excellent 100

An artifact of fully-specified annotations to power static-analysis checks, beginning with nullness analysis.

1.1K starsJun 8, 2026 pushdevelopmentJavaStatic Analysis
$ npx skills add jspecify/jspecify
#12

Semgrep

Similarity 119Trust 98Excellent 100

Lightweight static analysis for many languages. Find bug variants with patterns that look like source code.

16K starsJun 16, 2026 pushdevelopmentOCamlStatic Analysis
$ npx skills add semgrep/semgrep
#13

FlowDroid

Similarity 119Trust 91Excellent 96

FlowDroid Static Data Flow Tracker

1.3K starsApr 8, 2026 pushdevelopmentJavaStatic Analysis
$ npx skills add secure-software-engineering/FlowDroid
#14

Infer

Similarity 119Trust 95Excellent 100

A static analyzer for Java, C, C++, and Objective-C

16K starsJun 13, 2026 pushdevelopmentOCamlStatic Analysis
$ npx skills add facebook/infer
#15

Sonar Java

Similarity 119Trust 89Excellent 97

:coffee: SonarSource Static Analyzer for Java Code Quality and Security

1.2K starsJun 12, 2026 pushdevelopmentJavaStatic Analysis
$ npx skills add SonarSource/sonar-java
#16

Pysonar2

Similarity 118Trust 89Excellent 93

PySonar2: a semantic indexer for Python with interprocedual type inference

1.4K starsMar 2, 2026 pushdevelopmentJavaStatic Analysis
$ npx skills add yinwang0/pysonar2

How to choose

When should you switch?

Use an alternative when it has a clearer install path, higher trust score, fresher maintenance, or better platform fit for your current agent stack. Keep RefactorFirst if it already passes your workflow test and repository review.

Next step

Compare top candidates side by side

Open the compare page, test the install commands in a sandbox, and check each repository before using a skill in production.