Prestissimo

The README explicitly advises uninstalling it for Composer 2, which has built-in parallel downloads, making Prestissimo redundant and unsupported for modern setups.

Requires the PHP curl extension, which might not be available in minimal server environments or Docker images, adding a prerequisite that complicates deployment.

Only optimizes the download phase; it doesn't improve other slow aspects of Composer like dependency resolution, offering partial speed gains.

With the focus on Composer 2, this plugin may receive fewer updates, potentially leading to compatibility issues with newer PHP versions.