Head-to-head · September 2026
BT Captcha vs Kama SpamBlock
Kama SpamBlock comes out ahead, winning 6 of 7 head-to-head checks against BT Captcha.
BT Captcha
BT Captcha – simple, Bilingual, Flexible, Protect Your WP Blog Against Comment Spams Special thanks to the…
Kama SpamBlock
Kama Spamblock blocks simple automated comment spam. It is invisible to normal visitors and does not use…
| Metric | BT Captcha | Kama SpamBlock |
|---|---|---|
| Active installs | 10+ | 4K+ |
| Downloads (30 days) | 33 | 816 |
| Download trend | +10% | -16.3% |
| Rating | 5/5 | 5/5 |
| Reviews | 1 | 17 |
| Health score | 30/100 | 75/100 |
| Last updated | 15 years ago | 2 months ago |
| Tested up to | WP 3.2.1 | WP 7.0.6 |
| Support resolved | — | — |
| Requires PHP | Any | 7.4+ |
| First released | Sep 2011 | Nov 2014 |
Daily downloads, last 90 days
BT CaptchaKama SpamBlock
Choose BT Captcha if…
You care most about download trend.
- Small user base (10+ active installs)
- Very few reviews so far
- No update in 15 years
- Only tested up to WordPress 3.2 (latest is 7.1)
Choose Kama SpamBlock if…
You care most about active installs, downloads (30 days) and reviews.
Full Kama SpamBlock report →FAQ
BT Captcha vs Kama SpamBlock: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Sep 30, 2026
Which is better, BT Captcha or Kama SpamBlock?
Kama SpamBlock comes out ahead, winning 6 of 7 head-to-head checks against BT Captcha. Choose BT Captcha if you care most about download trend. Choose Kama SpamBlock if you care most about active installs, downloads (30 days) and reviews.
Is BT Captcha more popular than Kama SpamBlock?
Kama SpamBlock is the more popular of the two with 4K+ active installs, compared with 10+ for BT Captcha.
Can I use BT Captcha and Kama SpamBlock together?
Both plugins cover bot, captcha and comments, so most sites only need one. Running two plugins that do the same job can cause conflicts and slow your site down — pick the one that fits best and remove the other.
Are BT Captcha and Kama SpamBlock free?
Yes. Both are free to download from the official WordPress.org plugin directory. Either may also offer paid upgrades from its developer.
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