Life & fun · alternatives · 2026

24 alternatives to Concise Antispam

Simple, Reliable,Invisible.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Concise Antispam launched in 2021; newer entries below may have overtaken it.

1. 1
   Google Invisible reCAPTCHA▲428

   Protects your website from spam and abuse

   2017 · cloud.google.com · its alternatives →

2. 2
   Unspam AI▲385

   See how your subscribers read your emails with our AI inbox

   2024 · unspam.email · its alternatives →

3. 3
   Detecting adblock, without JavaScript, by abusing HTTP 103 responses▲108

   Detect adblockers without Javascript by abusing early hints - Mechazawa/103-early-anti-adblock

   2024 · github.com · its alternatives →

4. 4
   reCAPTCHA v3▲222

   The next generation reCAPTCHA

   2018 · developers.google.com · its alternatives →

5. 5
   reCAPTCHA Mailhide▲84

   Solution to protect email addresses by Google

   2014 · accounts.google.com · its alternatives →

6. 6
   Checker▲124

   Detect fake signups in under 200ms with an easy-to-use API

   2025 · its alternatives →

7. 7
   StealthHound▲196

   Your browser's blind spots, Exposed.

   Jan 2026 · its alternatives →

8. 8
   Invisible reCAPTCHA▲14

   Invisible? Incredible.

   2016 · cloud.google.com · its alternatives →

9. 9
   adCAPTCHA▲148

   Secure your site, elevate your brand, boost ad revenue

   2024 · adcaptcha.com · its alternatives →

10. 10
    WebSafely Extension▲113

    Instantly know if a site is a scam, right from your browser

    2025 · chromewebstore.google.com · its alternatives →

11. 11
    AgreeGuard▲90

    AI reads the fine print before you click "I Agree"

    Mar 2026 · agreeguard.app · its alternatives →

12. 12
    Bouncer Shield▲85

    Real-time form protection against bad emails

    2024 · usebouncer.com · its alternatives →

13. 13
    Apozy for Chrome▲48

    Chrome extension that blocks phishing

    2017 · apozy.com · its alternatives →

14. 14
    An experimental AntiBot, AntiCrawl reverse proxy for the web▲28

    An experimental AntiBot, AntiCrawl reverse proxy for serving simple static content. - pulkitsharma07/OnlyHumans-Proxy

    2024 · github.com · its alternatives →

15. 15
    IsTempMail – Detect and block disposable email addresses▲35

    Detect and block disposable, temporary, fake email addresses. Fight spam, fraud and free trial abuse. Available as WordPress plugin and via JSON API.

    2017 · istempmail.com · its alternatives →

16. 16
    IsItDisposable▲11

    Stop throwaway emails before they hit your database

    Aug 2026 · isitdisposable.com · its alternatives →

17. 17
    Scamwise▲25

    A smarter scam checker. Clear answers in seconds.

    Mar 2026 · scamwise.com · its alternatives →

18. 18
    Zerobait▲6

    24/7 automated anti-phishing protection

    2025 · zerobait.io · its alternatives →

19. 19
    List of disposable email domains to prevent fake registrations▲28

    HTML Editor Online. Edit your text and get the HTML code version.

    2021 · disposable-emails.github.io · its alternatives →

20. 20
    Free API to block disposable emails▲19

    Block disposable emails with our API. Start for free today.

    2017 · validator.pizza · its alternatives →

21. 21
    Form Defender▲8

    Defend your forms from spam

    Dec 2025 · formdefender.me · its alternatives →

22. 22
    IsThisSpam▲13

    Simple, AI based, email first spam/scam detection service

    2025 · isthisspam.org · its alternatives →

23. 23
    Unspam.io▲9

    Free up your inbox from unsolicited cold emails

    2024 · its alternatives →

24. 24
    DisposableCheck – Disposable Email Check▲12

    Free Disposable Email Detector & API

    Jan 2026 · disposablecheck.irensaltali.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →