In this post we want to share about some decaptcha software and services that we have encountered in our web scraping experience.
All CAPTCHA solving methods and therefore services and software that implement them could be split into two main categories:

  1. Optical Character Recognition (OCR) solutions
  2. The human CAPTCHA solving services

Optical Character Recognition (OCR)

1. GSA Captcha Breaker

Captcha breaker boxGSA Captcha Breaker is a CAPTCHA recognition software for Windows that substitutes captcha solving services saving your money. It recognizes over 600 different CAPTCHA types and even allows you to edit or add your own regonition algorithm or share some with other users. Depending on the level of difficulty of the captchas, it is likely that the software will automatically solve all of your captchas on the spot. As needed, the software forwards the hard CAPTCHA cases to the paid captcha services. You can read or review here

2. DeCaptcher

DeCaptcher LogoDeCaptcher is captcha solving online service that uses OCR technologies for captcha recognition (versus human labour). It provides APIs for more than eight programming languages and intended to be used in other commertial software.

You can read more about DeCaptcher here.

3. Captcha Sniper

Captcha Sniper LogoCaptcha Sniper is an interesting Windows application that intercepts requests to common captcha recognition services (like Decaptcha, Death By Captcha, AntiCaptcha and Bypass Captcha) and solves the captcha automatically in place of them. This allows you to dramatically reduce your captcha-recognition expenses since you pay only once buying the program instead of paying per each recognition!

As our reader you are eligible for a 10% discount for Captcha Sniper!

Human-based CAPTCHA solving services

4. DeathByCaptcha

Death By Captcha logoDeathByCaptcha is an hybrid of OCR system and human CAPTCHA solvers. You can connect to the service via API available for  C, PHP, Python, .NET C# & VB, Java, Perl, AutoIt3, iMacros and some other languages (note, though, that the documentation is available for registered users only). The delay of captcha recognition is about 10 seconds. Here you can see an example on how to use this service in C#.

5. BypassCaptcha

ByPassCaptcha logoBypass CAPTCHA is a manpower-based captcha solving service. The outstanding feature of this service is that it is focused on easy integration with any third-party software to enrich its captcha decoding functionality with automatic capthca recognition.  It provides API for many languages like PHP, Python, Perl, Ruby, Java, JavaScript, C/C++, C#, Delphi, VB.NET and others.

6. Image Typerz

Imagetyperz logo

Image Typerz is one more CAPTCHA BYPASS Service using cheap human labor. The difference in this service from the other similar ones is that this service will not process bad (hardly recognizable) CAPTCHAs. VIP priority can solve your captchas in less than 10 seconds for extra fees.

The service makes it easy to plug it in through numerous API for .Net, PHP, Java, C/C++, Perl, iMacros example, Command Line Program and C# HTML Posting (With Example Project).

7. ExpertDecoders

Expert Decoders logo

ExpertDecoders is a human based automated captcha solver.  I was impressed with the good feedback and quality service. For end users it enables one to work with BypassCaptcha.com API or De-Capcher API. For software vendors or software developers the service provides PHP, C# and iMacros examples.

8. www.9kw.eu CAPTCHA solving service

9kw eu logoThe 9kw.eu Service is for those who want to engage in CAPTCHA solving. You create an account, sign in and earn bonus points or credits for solving currently submitted CAPTCHAs. Also the service works in the opposite way. You may submit your own CAPTCHAs to be solved for the bonus points (it’s also possible to purchase credits). Both ways are applicable through API. There is also Google Chrome extension available to you for remote CAPTCHA solving. API and plugins are available here.

Use this software if you are not bothered that the solving speed is not very fast: “Nearly every captcha in less than 30 seconds”. Average CAPTCHA solving time for the time is 15 sec.

Conclusion

The de-captcha services are divided into two categories: OCR and using human labor. The latter mostly have a 95% to 100% success rate, yet the decoding time is over 10 sec per CAPTCHA.