Visforms is a native form generator for Joomla! 2.5.x. It allows you to generate forms without programmation and makes a point of protecting your forms against spambots.
It provides you with an adapted form of the Joomla! plugin spambotCheck.
Just install plg_visforms_spamcheck, that is attached in the installation zip file, enable the plugin and set up it's configuration.
Visforms provides you with captchas which you can use alternatively or additionally.
Visforms gives you further on the option to save form data in database and to export saved data into csv format.
Visforms works fundamentally similar to the Joomla 1.5 extension CK Forms from Cookex Developpment Team so that you may even be able to import your CK Forms data from your Joomla 1.5 website (see below).
Visforms provides you with substantial description for every single parameter, that helps you configure your form.
Visforms supports Joomla! 2.5 multi language websites natively and has complete language support in backend and frontend.