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reCAPTCHA

reCAPTCHA is a free service that protects your site from spam and abuse, using risk analysis techniques to tell humans and bots apart.

  • FreemiumProprietary
  • Online
Avg rating of 1.7 (7)| 8 comments

What is reCAPTCHA?

reCAPTCHA is a CAPTCHA system that enables web hosts to distinguish between human and automated access to websites. The latest version aims to have as little user interaction as possible, using machine learning to analyse a user's actions and determine if they are a bot, and if they fail that test they are asked to identify typically road-related items, which can help both to identify humans and train Google's self driving car project.

The original version asked users to decipher hard to read text or match images. Version 2 also asked users to decipher text or match images if the analysis of cookies and canvas rendering suggested the page was being downloaded automatically. Since version 3, reCAPTCHA will never interrupt users and is intended to run automatically when users load pages or click buttons. reCAPTCHA is owned by Google.

The original iteration of the service was a mass collaboration platform designed for the digitization of books, particularly those that were too illegible to be scanned by computers. The verification prompts utilized pairs of words from scanned pages, with one known word used as a control for verification, and the second used to crowdsource the reading of an uncertain word. reCAPTCHA was originally developed by Luis von Ahn, David Abraham, Manuel Blum, Michael Crawford, Ben Maurer, Colin McMillen, and Edison Tan at Carnegie Mellon University's main Pittsburgh campus. It was acquired by Google in September 2009. The system helped to digitize the archives of The New York Times, and was subsequently used by Google Books for similar purposes.

The system is free for 1 million calls monthly, and $1 per 1,000 after that (up to 10,000,000).

[Content adapted from Wikipedia, under CC-BY-SA 3.0]

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reCAPTCHA information

  • Developed byGoogle
  • LicensingProprietary and Freemium product.
  • PricingSubscription that costs between $0 and $9000.
  • RatingAverage rating of 1.7
  • Alternatives17 alternatives listed

Supported Languages

  • English

Our users have written 8 comments and reviews about reCAPTCHA, and it has gotten 128 likes

reCAPTCHA was added to AlternativeTo by Sedoe on and this page was last updated .

Comments and Reviews  Post a comment/review

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ab1
  
Top positive comment ago
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reCAPTCHA icon reCAPTCHA is safer than hosting your own CAPTCHA for most individuals and small businesses.

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0
PoorPocketsMcNewHold
  
Top negative comment ago
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Maybe the most popular, but far from being the better tho.

  • Block user blacklisting Google.
  • Block user using alternative internet protocols (I2P, TOR, for talking only the most popular.
  • Blocking people who block trackers, or people using some browser settings.
  • Can waste minutes to the user complete the whole CAPTCHA, by pretending multiples times that the user failed on multiple test. And the worse for a CAPTCHA :
  • It can be bypassed, Here´s for example Buster, and entirely free browser extension, that ironically use a couple of (API), including own Google ones to bypass their entire services.
1 reply
breakup_google

there are also some darkweb services to bypass it which I now pay for on some sites I use more often.

Reply written ago

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10
alquimista
  
Negative comment ago
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A horrible and privacy intrusive solution blocking common users and making users work for Google.

An example of technical monopoly where there are very few other viable and privacy friendly solutions.

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2
breakup_google
  
Negative comment ago
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since trump administration cancelled protection of users from ISP which allows all ISP to harvest surfing behavior of clients [to sell] it is foolish to use internets without VPN. I use VPN services from companies well rated by Torrent Freak. I am not a pirate or a spammer. I am also not politically correct because I will not comply with intellectual tyranny either.

I would no more disable VPN than I would adblock whitelist a site using third party ads

#deleteGoogle #privacyraping

for everything else there's F'google http://uncaptcha.cs.umd.edu/

[Edited by breakup_google, June 28]

[Edited by breakup_google, June 30]

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1
DudeTrustMe
  
Negative comment ago
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The only intention why this is so popular is to train G00gle' algorithms. I wish websites would stop using this sh*t and start looking for alternatives!

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9
TerrifiedTyphlosion
  
Negative comment ago
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I have bad memories of having to go through 50 picture selections in a row before finally giving up. And, yes, this thing is just a crowdsourcing method to help Google's bots recognize objects in images.

When it works, it works well with just a click of the box. When it doesn't... you're going to have a bad time trying to decide whether a box has a fire hydrant in it or not.

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5
Douze
  
Review ago
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I ihhgly suspect their image captcha to be a hidden tool for their bots to better analyze pictures and identify specific objects on photos... and i don't like it... Other than that, being able to pass the captcha with a single click (most of the time) is quite a big advantage.

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Tags

  • Security
  • Security & Privacy
  • Anti-spam
  • security-service
  • security-services
  • privacy-services
  • security-utilities
  • Privacy Tool
  • privacy-service

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