Packagist is the main Composer repository. It aggregates public PHP packages installable with Composer.
PSR-7 based middleware framework with fast initialization
Dependency injection container for fast initialization without closures
Router for fast initialization and quick common request routing
Access log parsing and statistics generation.
Bare bones MVC to provide controller/view structure
Command line utility for installing composer tools
Arbitrary precision number base conversion library
PSR-0 and PSR-4 compatible class autoloader
Secure and simple CSRF library protected against timing and BREACH attacks
Library for supporting byte ranges, mime types and conditional get
Cross-platform library for normalizing and joining file system paths
Highly customizable alternative to var_export for PHP code generation
Library for leveraging available secure random generators
RFC 3986 compliant url parsing library with PSR-7 Uri component
Console tool for configuring multiple PHP instances