Registry
npm
The JavaScript package registry. A Taken result shows the latest version, the description and last week’s downloads.
Each Check asks the npm registry for the Name and, at the same time, asks npm’s downloads API for last week’s download count.
A 404 from the registry means Available. Any other non-OK answer is an Error. When the downloads API does not answer, the result is still Taken and the download count shows as N/A.
More registries
All registries →- 01
Homebrew Formulae
The Homebrew namespace for command-line tools installed with brew install. Checked separately from Homebrew Cask.
- 02
Homebrew Cask
The Homebrew namespace for desktop apps installed with brew install --cask. Checked separately from Homebrew Formulae.
- 03
PyPI
The Python package index. A Taken result shows the summary, latest version and author; Names with -, _ or . get a PyPI normalization warning.