Standard Library
Symfony polyfill for the Mbstring extension
ECMAScript 5 compatibility shims for legacy (and modern) JavaScript engines
Symfony polyfill backporting some PHP 7.2+ features to lower PHP versions
Symfony polyfill for intl's idn_to_ascii and idn_to_utf8 functions
ECMAScript 6 compatibility shims for legacy JS engines
Symfony polyfill for intl's ICU-related data and classes
Symfony polyfill backporting some PHP 7.3+ features to lower PHP versions
Symfony polyfill for intl's Normalizer class and related functions
Symfony polyfill for the Iconv extension
:satellite: BroadcastChannel to send data between different browser-tabs...
Symfony polyfill backporting some PHP 8.0+ features to lower PHP versions
Symfony polyfill for intl's grapheme_* functions
Symfony utilities for portability of PHP codes
Minimal Python 2 & 3 shim around all Qt bindings - PySide, PySide2, PyQt...