About Package Name Checker
A comprehensive tool designed to help developers validate package name availability across multiple platforms and ecosystems.
A package name checker is an essential tool for developers, app creators, and software teams to validate the uniqueness of their chosen package names before publishing apps or libraries. Whether you're releasing a mobile app on the Google Play Store, publishing a JavaScript package to the npm registry, distributing a Python library via PyPI, or creating a Homebrew formula, having a unique package name is crucial.
Our tool eliminates the need to manually check each platform by providing a unified interface that queries multiple package ecosystems simultaneously, saving you time and ensuring comprehensive coverage.
Supported Platforms
Android app package names (e.g., com.example.myapp)
Format: Reverse domain notation
Example: com.company.appname
JavaScript/Node.js packages
Format: Lowercase with hyphens
Example: my-awesome-package
Python packages and libraries
Format: Lowercase with hyphens or underscores
Example: my-python-package
macOS package manager formulas
Format: Lowercase with hyphens
Example: my-cli-tool
Key Features
Real-time Checking
Get instant results by querying platform APIs directly
Cached Results
Performance optimized with 5-minute caching to reduce load times
Multi-platform
Check availability across 4 major package ecosystems simultaneously
Developer Friendly
Clean interface with detailed error handling and validation
Enter Package Name
Type your desired package name in the search field
Multi-Platform Check
We query multiple platform APIs simultaneously
Get Results
View availability status for each platform
- •Results may occasionally be inaccurate due to platform-specific caching, API limitations, or temporary unavailability.
- •Some platforms may have additional naming requirements or restrictions not covered by this tool.
- •Always verify availability manually on the target platform before finalizing your package name choice.
- •Results are cached for 5 minutes to improve performance. Recent changes may not be immediately reflected.
Ready to Check Your Package Name?
Start checking package name availability across multiple platforms now.
Start Checking Names