Methanol

Methanol is a server-side macro language interpreter designed for use with HTML and CGI. It allows World Wide Web authors to effectively write CGI scripts into their HTML files.

server-side:
Methanol doesn't care what browser you use. It is mostly invisible to the client (browser) program. The client will treat Methanol just as it would any other CGI script. In order to publish a Methanol file, however, the Methanol CGI Interpreter must be installed on the web server.
macro language:
Methanol allows authors to define commonly used segments of HTML code or other text as "Macros." The macros can be invoked as often as necessary later. The importance of this may not be readily apparent to non-programmers. By building more and more powerful macros based on smaller ones, ultimately based on the simple commands provided by Methanol itself, authors can build their own libraries of complex functions.
interpreter:
Methanol does not compile anything. It doesn't even half-compile like Java does. When the Methanol CGI Interpreter receives a request for a Methanol file, it reads the current contents of that file and evaluates any Methanol tags it finds. This means that the author need only write the Methanol files and put them somewhere Methanol can find them, just as one would do with normal HTML files.
for use with HTML and CGI
Methanol was designed to be accessed through the Common Gateway Interface, much like a standard HTML form. It is compatible with HTML 2.0, HTML2+, HTML 3.0, Netscape Enhancements, and MicroSoft Enhancements. As long as new versions of HTML do not conflict with Methanol's tags, it will continue to be compatible in the future.
This site abides by the WIP link Web Interoperability Pledge .