Side by side
Regex Shuttle vs RegexPlanet
Both stand on regular expression testers. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Regex Shuttle combines a tester, explainer, pattern library, substitution preview, and cheat sheet in a free browser tool. Its regex behavior follows JavaScript’s engine, so it is suited to JavaScript patterns rather than other regex flavors.
Visit Regex ShuttleChoose RegexPlanet if you need a free web-based place to compare regex behavior across its supported engines, especially with the Java tester’s input and matching controls. Consider the maker’s security warning and the stated collection of browser and form data before entering sensitive content.
Visit RegexPlanetThe facts
| Regex Shuttle | RegexPlanet | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Web | Web |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | regex.shuttlelab.org | regexplanet.com |
| On regular expression testers | #11 of 23 | #7 of 23 |
Regex Shuttle: what it does well
- Highlights matches as you type.
- Explains expressions token by token.
- Previews substitutions including capture-group references.
- Processes patterns locally in the browser.
- Works offline after the first load.
What to know first
- Uses JavaScript’s native RegExp engine.
- Offline use starts only after the first load.
RegexPlanet: what it does well
- Offers test pages for numerous regex engines.
- Java tester accepts replacements and multiple input strings.
- Java options include multiline and case-insensitive matching.
- Free public service accessible on the web.
- Status page reports the condition of each engine.
What to know first
- Malformed expressions may run indefinitely.
- Some engines or hosts may be susceptible to denial-of-service attacks.
- The privacy policy says form entries and browser data are collected.
Alternatives to Regex Shuttle Alternatives to RegexPlanet The whole list