I am looking for ANY plugin which can save custom form(newsletter form, contact form) data to WP database (front-end) and then allow to browse the submitted data in the back-end (WP admin).
Any tips much appreciated!
http://www.advancedcustomfields.com/ can do front-end forms: http://www.advancedcustomfields.com/docs/tutorials/creating-a-front-end-form/
as well as http://www.gravityforms.com/ which is a commercial plugin.
Best solutions would be:
Contact Form 7: http://wordpress.org/extend/plugins/contact-form-7/
Contact Form to DB: http://wordpress.org/extend/plugins/contact-form-7-to-database-extension/
Contact Form 7 to Database Extension:
Perfect solution!
With this plugin you can add PHP code to your pages that saves form data to a database.
https://woodysnippet.com/getting-started-with-woody-ad-snippets/