WordPress plugin comparison
Duplicate Killer vs ReCaptcha v2 for Contact Form 7
At a glance
- ReCaptcha v2 for Contact Form 7 has more active installs: 200K+, against 1K+ for Duplicate Killer.
- On a typical day, ReCaptcha v2 for Contact Form 7 is downloaded about 690 times, Duplicate Killer about 71.
- Both are rated 5.0 out of 5.
- Duplicate Killer was updated more recently: Nov 2, 2026, against Jun 5, 2026 for ReCaptcha v2 for Contact Form 7.
- Duplicate Killer is tested with a newer WordPress: 7.1.4, against 7.0.8 for ReCaptcha v2 for Contact Form 7.
- ReCaptcha v2 for Contact Form 7 has been around longer: since 2018, against 2022 for Duplicate Killer.
Line by line
ReCaptcha v2 for Contact Form 7 leads on 4 of 6 comparable lines.
| Metric |  Duplicate Killer |  ReCaptcha v2 for Contact Form 7 |
|---|---|---|
| Popular rank | #6,208 | #227 |
| Active installs | 1K+ | 200K+ |
| Downloads, last 30 days | 2.9K | 19.9K |
| Rating | 5.0(3) | 5.0(89) |
| Support threads resolved | – | – |
| Tested up to | 7.1.4 | 7.0.8 |
| Search multiplier | ×0.63 | ×1.27 |
| Last release | 7 days ago | 5 months ago |
| Requires PHP | 5.6.20 | – |
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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- ReCaptcha v2 for Contact Form 7 vs Image CAPTCHA for Contact Form 7 and WPForms by HookAndHook (DSGVO/GDPR)
- ReCaptcha v2 for Contact Form 7 vs Invisible reCaptcha
- ReCaptcha v2 for Contact Form 7 vs reCAPTCHA for WooCommerce
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