Audience
Websites that need a simple text CAPTCHA
About TextCaptcha
The TextCaptcha service provides access to textual CAPTCHA challenges via a simple JSON or XML API over HTTP.
The question is the textual challenge that should be presented to the user. The answers are the MD5 hashes of correct lower cased answers: you should be able to check responses from real users you challenge with the question against these checksums.
A text CAPTCHA is more accessible to visually impaired users than their image-based alternatives like ReCAPTCHA. Using text is also more flexible if for example you need to present the challenge over a text-only channel like SMS or IRC.
The problem with text CAPTCHAs is that they provide inherently more information than a distorted image. They are parseable, under the right conditions solveable. With the advent of contextual parsing tools such as Wolfram Alpha, such simple logic puzzles have become easier to solve programatically.
Other Popular Alternatives & Related Software
MTCaptcha
MTCaptcha is a smart captcha service that prioritizes privacy and accessibility. It offers an adaptive invisible noCaptcha that is easy for humans but hard for bots, making verification frictionless. MTCaptcha is GDPR and WCAG compliant, ensuring that your data is never sold or shared with third parties. The captcha images are certified colorblind safe and the widget is fully VPAT compliant and optimized for screen readers. MTCaptcha supports any language and can be fully customized to match any webpage. It also supports audio in captcha, making it accessible to users who are visually impaired. MTCaptcha is trusted by Enterprises, Government, NGOs worldwide and is available in all the major world languages. MTCaptcha works around the world, including in China, making it a truly global captcha solution. It is backed by an adaptive Risk Engine that monitors and responds to threats, making it difficult for bots but easy for humans.
Learn more
Turnstile
Turnstile delivers frustration-free, CAPTCHA-free web experiences to website visitors - with just a simple snippet of free code. Moreover, Turnstile stops abuse and confirms visitors are real without the data privacy concerns or awful UX that CAPTCHAs thrust on users.
Give your web visitors an even better experience. Turnstile confirms they are real with no visual puzzle - totally transparent to visitors.
Turnstile always preserves the privacy of web visitors on your site - without sacrificing effectiveness. Unlike other CAPTCHA options, we never harvest data for ad retargeting.
Deploy in minutes with just a quick code snippet - and totally free of charge.
Humans spend about 500 years each day solving CAPTCHAs - wasting time and creating frustration. This is why Cloudflare built a better alternative to CAPTCHAs with Managed Challenge and now Turnstile.
Learn more
reCAPTCHA
Fraudulent web activities cost enterprises billions of dollars each year. Security teams need to keep the bad actors out of their websites and ensure that their customers can always get in. reCAPTCHA has been defending millions of sites for almost a decade, and the reCAPTCHA enterprise service builds on this technology with capabilities designed specifically for enterprise security concerns. With reCAPTCHA Enterprise, you can defend your website against fraudulent activity like scraping, credential stuffing, and automated account creation and help prevent costly exploits from automated bots. And, just like reCAPTCHA v3, reCAPTCHA Enterprise will never interrupt your users with a challenge, so you can run it whenever you like without affecting conversion. reCAPTCHA Enterprise uses an adaptive risk analysis engine to keep automated software from engaging in abusive activities on your site.
Learn more
GoCaptcha
GoCaptcha: First 100k verifications free monthly, fortifying websites against bots and spam. Although bots are able to bypass conventional CAPTCHAs, the GoCaptcha challenges have been specifically created to effectively counter modern threats. By offering a combination of defensibility, usability, and accessibility, GoCaptcha is a single product that can handle a variety of challenges. In fact, it's the most powerful CAPTCHA solution available. GoCaptcha provides a better user experience compared to traditional CAPTCHAs. This is because it uses a combination of fun and interactive challenges that are easy for humans to solve but difficult for bots. Overall, the combination of engaging challenges, clear presentation, and accessibility features makes GoCaptcha a more user-friendly and enjoyable CAPTCHA solution.
Learn more
Pricing
Starting Price:
Free
Free Version:
Free Version available.
Integrations
Company Information
TextCaptcha
textcaptcha.com
Videos and Screen Captures
Other Useful Business Software
Ship AI Apps Faster with Vertex AI
Ship AI apps and features faster with Vertex AI—your end-to-end AI platform. Access Gemini 3 and 200+ foundation models, fine-tune for your needs, and deploy with enterprise-grade MLOps. Build chatbots, agents, or custom models. New customers get $300 in free credit.
Product Details
Platforms Supported
Cloud
Training
Documentation
