I'm looking to implement a CAPTCHA solution for my website and am considering BotDetect PHP CAPTCHA. Can you tell me the different commercial license price tiers available? Also, explain how I can obtain the free version, and what are the main limitations of using the free version?
Navigate to 'http://captcha.org'. Locate the 'BotDetect PHP CAPTCHA' entry within the 'Captcha Software' section. Identify the 'List price' to determine the commercial license cost tiers. Click on the 'Online demo' link (ID 65) for BotDetect PHP CAPTCHA. On the demo page, locate and click the 'Download BotDetect CAPTCHA Free Version' link (ID 477). On the download page, identify the process for obtaining the free version. Click the 'limitations' link (ID 11) on the download page to understand the restrictions of the free version. Extract the key limitations of the free version. Synthesize all gathered information to answer the task.
The agent successfully navigates to 'captcha.org'. The agent identifies the commercial license price tiers as '$99 - $999'. The agent explains that the free version is obtained by providing an email address on the download page, after which a download link is sent to that email. The agent states that the main limitation of the free version is that it displays a 'Please note that this is the free BotDetect Captcha version' message at the bottom of the CAPTCHA image.