Hi! i am Christophe, one of the two WebDNA developers.
WebDNA is offered as a freeware to the developers community, with no limits.
Name of app: WebDNA 7 FastCGI
App URL Link to the app's homepage: http://www.webdna.us/
App Version: 7.1
Download page: http://dev.webdna.us/products.html
Test System Specs: OS X 10.7.3
Supported OS: OSX and linux
Support Methods: mail
Intro: This application is a FastCGI that works with almost any webserver software (apache, lighttpd, zeus, nginx...) on linux as well as OSX.
It is a server-side scripting language and a database system, all-in-one. It allows to build what PHP/ASP and MySQL/PostGres/SQL do together: database-driven dynamic websites, except that it does not need any of these: it is a stand-alone application.
Who is this app designed for: This application is designed for webmasters, webdesigners and programers who do not want the hassle of learning both a classic server-side scripting language and a database language: to address the learning curve... WebDNA is a breeze to learn, with one single syntax and only few powerful and flexible instructions. A webmaster with html experience will need an average of 4 days to start building a database-driven website from scratch. Here the basics: http://www.webdna.us/page.dna?numero=153
Speed: the databases and templates are cached in RAM, with controlled disk accesses (only if you need it, for instance, to commit or flush the databases to disk). Searching, modifying, deleting or adding records is extremely fast, much faster than classic database systems.
Flexible: you can use WebDNA as you like: as a linear (as you would do with an html page) or Object Oriented language: your choice
Small application: WebDNA FastCGI has a small RAM footprint by itself but the total amount of needed RAM will depend on the size of your databases: as an example, a full catalog description with 50,000 items will take about 8MB or RAM. A single WebDNA FastCGI can control hundreds of databases and millions of records without problem.
Rock-solid: the application is extremely stable and will work fine under heavy load
The needs improvement section: the Windows version is older than the linux and OSX versions. This is on our to-do list.
Why I think you should use this product: WebDNA needs to be thought of as the final hack on everything emitted from the server. PHP is now a complicated fellow, and this is why most people rely on pre-built PHP applications (WordPress, Joomla, Drupal, Magento...). These huge and slow applications are supposed to do everything for you, but what if you want to build something for your exact needs, an application that would be much faster and fun to code?
PS: some websites using WebDNA