1.PHPMailer / PHPMailerThe classic email sending library for PHPphpsmtpphp-libraryemailxoauth2tls-support+3 morePHPLGPL-2.122K total9.8K forks+52 starsfrom 22,291 · score 3.97
2.cypht-org / cyphtCypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and EWS (Exchange Web Services)phpwebmailwebmail-clientimappop3smtp+6 morePHPLGPL-2.11.8K total256 forks+43 starsfrom 1,744 · score 3.78
3.dompdf / dompdfHTML to PDF converter for PHPdompdfphpfonthtmlcsshtml-to-pdf+1 morePHPLGPL-2.111K total1.8K forks+21 starsfrom 11,190 · score 3.09
4.ezyang / htmlpurifierStandards compliant HTML filter written in PHPPHPLGPL-2.13.3K total363 forks+2 starsfrom 3,346 · score 1.10
5.php-amqplib / php-amqplibThe most widely used PHP client for RabbitMQphpamqprabbitmqmessagingphp-amqplibhacktoberfestPHPLGPL-2.14.6K total1K forks+1 starsfrom 4,598 · score 0.69