WordPress plugin comparison
BT Captcha vs Invisible Anti-Spam & CAPTCHA
At a glance
- Invisible Anti-Spam & CAPTCHA has more active installs: 5K+, against 10+ for BT Captcha.
- On a typical day, Invisible Anti-Spam & CAPTCHA is downloaded about 199 times, BT Captcha about 1.
- BT Captcha is rated higher: 5.0 out of 5 from 1 review, against 4.8 from 50 reviews.
- Invisible Anti-Spam & CAPTCHA was updated more recently: Nov 4, 2026, against Sep 21, 2011 for BT Captcha.
- Invisible Anti-Spam & CAPTCHA is tested with a newer WordPress: 7.1.4, against 3.2.1 for BT Captcha.
- BT Captcha has been around longer: since 2011, against 2022 for Invisible Anti-Spam & CAPTCHA.
Line by line
Invisible Anti-Spam & CAPTCHA leads on 6 of 7 comparable lines.
| Metric |  BT Captcha |  Invisible Anti-Spam & CAPTCHA |
|---|---|---|
| Popular rank | #41,032 | #3,192 |
| Active installs | 10+ | 5K+ |
| Downloads, last 30 days | 35 | 8.4K |
| Rating | 5.0(1) | 4.8(50) |
| Support threads resolved | – | 83% |
| Tested up to | 3.2.1 | 7.1.4 |
| Search multiplier | ×0.00 | ×1.34 |
| Last release | 15 years ago | 6 days ago |
| Requires PHP | – | 7.1 |
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
More comparisons
- BT Captcha vs Akismet Anti-spam
- BT Captcha vs Simple CAPTCHA with Cloudflare Turnstile
- BT Captcha vs Anti-Spam, Spam FireWall by CleanTalk
- BT Captcha vs Gravity Forms Zero Spam
- Invisible Anti-Spam & CAPTCHA vs CF7 Apps
- Invisible Anti-Spam & CAPTCHA vs Gravity Forms Zero Spam
- Invisible Anti-Spam & CAPTCHA vs Friendly Captcha for WordPress
- Invisible Anti-Spam & CAPTCHA vs oopspam Anti-Spam
Is one of these yours?
Track your plugin against its rivals every day: rank, installs, downloads, ratings and their releases, with alerts when anything moves.
Start free