WordPress plugin comparison
Captcha Ajax vs Really Simple CAPTCHA
Captcha Ajax
by Alessandro Lin
100+ installs4.7
Really Simple CAPTCHA
by Rock Lobster Inc.
300K+ installs4.2
At a glance
- Really Simple CAPTCHA has more active installs: 300K+, against 100+ for Captcha Ajax.
- On a typical day, Really Simple CAPTCHA is downloaded about 892 times, Captcha Ajax about 9.
- Captcha Ajax is rated higher: 4.7 out of 5 from 3 reviews, against 4.2 from 131 reviews.
- Captcha Ajax was updated more recently: Oct 4, 2026, against Aug 23, 2026 for Really Simple CAPTCHA.
- Captcha Ajax is tested with a newer WordPress: 7.2, against 7.1.4 for Really Simple CAPTCHA.
- Really Simple CAPTCHA has been around longer: since 2009, against 2023 for Captcha Ajax.
Line by line
Really Simple CAPTCHA leads on 4 of 7 comparable lines.
| Metric | Captcha Ajax | Really Simple CAPTCHA |
|---|---|---|
| Popular rank | #14,871 | #188 |
| Active installs | 100+ | 300K+ |
| Downloads, last 30 days | 262 | 32.2K |
| Rating | 4.7(3) | 4.2(131) |
| Support threads resolved | – | 0% |
| Tested up to | 7.2 | 7.1.4 |
| Search multiplier | ×0.38 | ×1.25 |
| Last release | 1 month ago | 2 months ago |
| Requires PHP | 7.2.24 | 8.3 |
From WordPress.org's public data, refreshed every night. Downloads are WordPress.org's official daily figures for the last 30 days.
Tags they share
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