Hiawatha is a secure and advanced Web server for Unix. It has been written with security as its main goal. It features advanced access control, prevention of SQL injection and cross-site scripting, banning of clients who try such exploits, the ability to run CGIs under any UID/GID you want, and many other features. These features make Hiawatha an interesting Web server for those who need more security than what the other available Web servers are offering. Hiawatha is also fast and easy to configure.
MuleSoft Tcat Server is enterprise Tomcat made simple: a fully supported Tomcat server that allows developers to easily build and test today’s connected Web applications, and that simplifies Tomcat management and application provisioning tasks for administrators. Tcat Server has an easy graphical installer and headless installer for Linux (multi-distro: RHEL, Debian, CentOS, Fedora, Ubuntu, openSUSE, etc), Windows, Solaris 10, and Solaris 11. Tcat also offers reliable JVM restarts, server group deployments, a REST API for scripting the console in any language, a groovy shell built into the console, and JMX alerting and monitoring features.
LilacServer is a Web developed in Java that employs Java NIO technology. It is fast and highly productive. It is also a template engine with its own language for creating templates and a framework with its own API. More features of interest: built-in support for databases via JDBC; integrated localization facilities; sophisticated caching capabilities; support of sessions, multi-part forms, and file uploads; support of third-party libraries; a Web-based management interface; and so on.