PECL, which stands for the PHP Extension Community Library was a sister project to PEAR, the PHP Extension and Application Repository. The PECL website has not been properly maintained for a long while now. Since then, the tool has matured with more features, and better integration with Packagist, which now also features PHP extensions besides public PHP packages. At some point in the future, the PECL website will be discontinued leaving PIE installing PHP extensions from Packagist as the only available option. Only through superior testing will the new PIE installer reach maturity, and become ready to have a 1.0 release.