Side by side
ast-grep vs CodART
Both stand on code refactoring tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APIExtensionLinux+3
ast-grep combines structural code search, configurable linting, and rewriting in a free, open-source tool. Its language coverage and integrations are broad, though it does not provide some advanced static-analysis information and rules are limited to one language at a time.
Visit ast-grep Free plan APILinuxSelf-hosted+1
CodART combines Java refactoring operations, optimization, and code-quality analysis with web and API interfaces. Account for the separate SciTools Understand license and stated hardware requirements before adopting it.
Visit CodARTThe facts
| ast-grep | CodART | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Extension, Linux, Mac, Web, Windows | API, Linux, Self-hosted, Web |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | ast-grep.github.io | github.com |
| On code refactoring tools | #1 of 22 | #2 of 22 |
ast-grep: what it does well
- Searches and rewrites code by syntax-tree pattern.
- Interactive CLI previews rewrites before applying them.
- Supports 20+ languages and custom language loading.
- Rule tests can use snapshots.
- Online playground works without local installation.
What to know first
- Some advanced static-analysis information is unsupported.
- A rule cannot target multiple languages at once.
CodART: what it does well
- Documents 47 automated refactoring operations.
- Optimizes across eight QMOOD quality metrics.
- Includes PPO-based refactoring sequence generation.
- Provides a React interface and FastAPI REST API.
- MIT-licensed software is free.
What to know first
- Setup requires a separate SciTools Understand professional license.
- Quick-start requires at least 8 GB RAM and 4 CPU cores.
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