
Must Have Module
If your site has any login of any kind, you absolutely need this module. I got bot attacked and this module saved my site.
Review by ARSR [info] on August 25, 2010 - 16:11

Man to Maximize
As per my knowledge i developed site without CAPTCHA this makes me to realize and learn the importance of CAPTCHA and reCAPTCHA through DRUPAL which is user friendly and information provider to every web designer. Drupal provides the ethics for good presentation. Now this CAPTCHA filters the automatic submission of bulk datas.
Review by selvasoft2003 [info] on June 10, 2010 - 17:43

Not reliable, missing docs
CAPTCHA module ran for some months on my sites and still, lots of spam slipped through it. So far, the only module that does an acceptable job in identifying and blocking spam is the Mollom module.
Further, as a module maintainer, I get many bogus support requests regarding CAPTCHA module, because its UI is confusing and not understood by site administrators.
Review by sun [info] on March 6, 2010 - 15:50

A must have. Period.
CAPTCHA and reCAPTCHA are an absolute must for any website! Extremely easy to install and configure!
Review by pixel8r [info] on February 5, 2010 - 20:17

Must have module if you receive a lot of spam
The UI is really well designed. Very self explaining layout and options.
Review by joeph [info] on December 31, 2009 - 15:13

Good module
I always use this module on sites where I have any type of input that needs protection vs spam/robots.
It's easy to use and I've never experienced any problems with it.
Review by drupalmannen [info] on December 9, 2009 - 15:40

Very Nice
This is a very nice anti spam module. It's easy to install and setup but most important, it looks clean to your uses.
Review by mreish [info] on July 30, 2009 - 16:27

solid performer
This module works great on my sites and has been running flawlesly. recommended
Review by tarjous [info] on July 15, 2009 - 13:40

I love it
This is a great module. i installed it in my drupal sites. Really it helps me to avid spams.
Review by aloy_mdu [info] on June 26, 2009 - 11:36

IT WORKS and Very Easy to use
A Wonderful module, anyone needing to safeguard the sites they setup should look into using this module.
It's Sweet!
Review by DoctorMicro [info] on June 21, 2009 - 22:15

Must have module for spam protection
I really use captcha everywhere! Its easy to hook into anything that goes through the form api.
As I rewrite the ecard module I always recommend the users to use this module for more protection.
One thing that bugs me is that the disortion can get too heavy and you can't see what letters there are. So I set it always to low that humans have a change to read.
And even there is not that much to say I always miss more documentation.
Review by Kars-T [info] on February 23, 2009 - 23:46

Nobody can complain...PERFECT module
If someone complains about this module it will be because it is too perfect.
It is simple to install, even more simple to configure, and works perfectly the first time, without fail, where you want it and for whom.
GREAT WORK!!! Keep it coming...
Review by MrWAC [info] on February 18, 2009 - 01:05

I love this module!
I love this module!
Review by gretz [info] on February 16, 2009 - 18:10

Great module for filtering unwanted visitors
Its very useful if you can't watch your site on a daily basis
Review by yanivnizry [info] on February 2, 2009 - 13:52

Good because it's simple
Sure Mollom is out there, but after having thirdparty functionality fail on me for various things and/or just slow things down, I appreciate the catpcha module because it's site-contained, simple, and works.
Review by Caleb G [info] on January 24, 2009 - 05:46

I love this module!
Plenty of nice features, even this site uses it!
Review by giraldi [info] on December 17, 2008 - 19:38

Great... if you don't use Mollom
The Captcha is a brilliant module and can pretty much eliminate all automated spam, but if you use Mollom on your site, you don't really need to use this as Mollom has its own Captcha built in.
Review by Marketing-Results [info] on October 9, 2008 - 01:55

First line of defense
What can one say about a module that protects your site against a considerable percentage of spam, simply by posing a challenge in the form of a word or math question? Yes, it sounds elementary, but the developer of this module has saved me and thousands of other drupal users from miserable bots and trolls who may not know elementary math or grammar. Easy to set up, easy to add to forms, combine with recaptcha and you have an unbeatable combination. Fantastic work!
Review by bwv [info] on September 25, 2008 - 18:53

Captcha + reCaptcha = dream spam/bot protection
Great module. Easy to configure. If you're having problems with spam get Captcha. I'd also recommend the reCaptcha module which is an add on that provides a much nicer widget for the user. reCaptcha also saves you having to configure the image captcha which requires uploading a font to the server (you can read about a bunch more benefits on their site).
I'd been putting off installing this for weeks cause I thought it would be much harder to use than it is. It ended up taking a little over an hour to download, install, learn, configure, test, adjust and have this system running smoothly. Awesome.
Review by MikeyLikesIt [info] on September 5, 2008 - 09:23

CAPTCHA Is A Must For Your Drupal Blog
CAPTCHA is a great Drupal module to help you protect against pesky spam bots. It's impressive to see in the logs how many attempts it actually thwarts on a daily basis.
An additional module that expands the awesome power and user friendliness of CAPTCHA is reCAPTCHA, which utilizes a third party database of scanned words from books. Thus, you're helping digitize text for the betterment of the world!
--
Robert Nelson Vance
Owner, proVanceTek LLC
Review by rbtvance [info] on July 28, 2008 - 06:52

An absolute must have module
Before I installed this module on my website, I was getting spam bots registering left right and centre. This module stopped all that.
Captcha is very easy to install and is very stable. I currently use it on my website www.huaq.net
Review by lesliewu [info] on July 23, 2008 - 13:49

Well thought out...
And really easy to use, using it on every site now...
Review by erikfreelock [info] on May 13, 2008 - 22:07

Kill the Spammers
Created by Fabiano 'Wundo' Sant'Ana, The CAPTCHA module is great for stopping spam posts and automated account creation on a Drupal site. It gives you the ability to set a CAPTCHA on any Drupal form, which has come in handy on this site as I have been receiving emails similar to this recently:
W09zxA <a href="http://khffvokqjfyd.com/">khffvokqjfyd</a>,
[url=http://comysmauwhce.com/]comysmauwhce[/url],
[link=http://ccfthzcigekg.com/]ccfthzcigekg[/link],
Looks like some one is testing their blog spam script. Anyway the CAPTCHA module helps stop this by requiring users to enter either the alphanumerics displayed in a picture or by asking a question such as
'What is the fifth word in the phrase "yasev iko epeha huvo usa"?:'.
The image-based CAPTCHA has a variety for options as to what it shows. You can set the following:
- Characters to use
- Length of the code
- Font (you need to upload a .ttf file to use a custom font)
- Font Size
- Character spacing
- Distortion Level
- Smooth distortion
- Double Vision
- Add salt and pepper noise
- Add line noise
- Noise Level
The great thing about this is that you can make your CAPTCHA images unique, and therefore harder for these guys to crack! The CAPTCHA module is available for Drupal 4.7, 5 & 6, and is still in active development.
Review by samhassell [info] on May 6, 2008 - 10:48

Perfect little module, essential!
The module is very easy to use and install. This is an essential feature. The math captcha is possibly even "fun".
Review by heather [info] on April 27, 2008 - 09:10

A very well thought-out module
This module has a lot of little features that make it great. The ability to add captchas to any form is really useful.
The true strength of this module lies in the fact that it provides an API for other modules to plug into. This means you can extend it to provide many different types of captchas.
I suggest checking out Captcha Riddler, it's a great addition to this module.
Review by John [info] on April 20, 2008 - 02:41

Awesome!
I love the API behind it!
Review by Rob Loach [info] on March 19, 2008 - 16:44