OpenOffice Bibliography Fix

AOP Portlets

Android Import Contacts


Sqlite3 JSP Custom Tags


Here you will find the DuCaptcha, a simple Captcha implementation for Java. It is tested against some OCR software to make sure that data is not recognizable.
Here is the example captcha:

How do I try it?

It literally takes two steps to try the DuCaptcha:
  1. Download Tomcat app server and start it up
  2. Put the ducaptcha-{version_number}.war (from the binary tar in download section) to Tomcat webapps folder
  3. Oh, sorry, the third step - type the URL in your browser: http://localhost:8080/ducaptcha-{version_number}

How it works

It works as most other captcha implementations: a random String is generated and put to Http session, an image (png file) depicting the String is created and displayed with a servlet. User inputs a value which is checked against the String stored in the session.


This piece of software is licensed under Lesser GPL license.


Please note: this software is provided 'as-is' and DuSystems is not responsible for any damage it may cause.
Please feel free to customize this software to your own taste: it provides a number of abstract classes that can be easily extended.
Please direct your comments and patches to mihel (a_t)

Sources: ducaptcha-src-0.0.2.tar.gz
Binary: ducaptcha-bin-0.0.2.tar.gz