The ServletExec product line consists of five deployment versions - depending on your web server, operating system, and process configuration. All versions of the ServletExec product line share a common set of features.

Shipping since December 1997, ServletExec is one of the most mature, robust, and best performing implementations of the servlet and JSP specifications available. ServletExec has historically been one of the first products to implement new versions of the servlet and JSP specifications.

Debugging in ServletExec can be accomplished from within the web server included within the Windows and UNIX versions of ServletExes/AS (above). The ServletExec/AS built-in web server is a basic web server written in Java that contains the full ServletExec implementation of servlets and JSP.

The built-in web server lets you develop and debug web applications in an environment that very closely simulates the ServletExec deployment environment. It facilitates the development and debugging of web applications by allowing you to run them from within an IDE.

ServletExec/AS is a standalone web application server that hosts Java Servlets and JSPs. There are two versions of ServletExec/AS: one for Windows 2008/Vista/2003/XP/2000 and another for UNIX platforms, including Linux, SPARC Solaris, HP-UX and AIX.

ServletExec/AS can be deployed in conjunction with Microsoft IIS, Apache HTTP Server, Sun Java System Web Server (SJSWS) or Sun ONE Web Server. ServletExec adapters for these web servers are included in the ServletExec/AS installers.

(SE 5.x, 4.x only..)

ServletExec/ISAPI is a plug-in servlet engine for Microsoft IIS on Windows 2003/XP/2000.

If you're running Microsoft IIS, and you aren't sure whether the ISAPI Servlet Engine or Application Server configuration is best for you, we recommend using ServletExec/AS.