Apache James
Apache James is a pure Java SMTP, POP3 enterprise mail server.
14 Alternatives To Apache James
263 Mail
263 Mail is an email solution for the enterprises.
Apache Tomcat
An open source software implementation of the Java Servlet and JavaServer Pages technologies
FastMail
Email, calendars, and contacts to highest standards of security, privacy and reliability.
LiteSpeed Web Server
LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.
OpenResty
Turning Nginx into a Full-fledged Web App Server
Oracle Tuxedo
Oracle Tuxedo is an application server for C, C++, COBOL, Java and dynamic language applications in private cloud or traditional data center environments.
Oracle WebLogic
Receive a complimentary technical review and consultation on moving your Oracle WebLogic Server applications into containers.
Payara Server
Payara Server is fully supported, developer-friendly, open source application server. Innovative, cloud-native, optimized for production deployments.
ProtonMail
Secure email with absolutely no compromises. Get your free encrypted email account today.
QQ Mail
QQ Mail is an enterprise email solution from Tencent.
Tornado
A Python web framework and asynchronous networking library, originally developed at FriendFeed
Wildfly
WildFly is a flexible, lightweight application server.
Zoho Mail
Zoho Mail is a webmail service built with the needs of a modern business in mind.
lighttpd
A secure, fast, compliant, and very flexible web-server that has been optimized for high-performance environments