WordPress plugin comparison
Duplicate Killer vs Ultra Addons for Contact Form 7
At a glance
- Ultra Addons for Contact Form 7 has more active installs: 60K+, against 1K+ for Duplicate Killer.
- On a typical day, Ultra Addons for Contact Form 7 is downloaded about 1,119 times, Duplicate Killer about 71.
- Duplicate Killer is rated higher: 5.0 out of 5 from 3 reviews, against 4.8 from 108 reviews.
- Duplicate Killer was updated more recently: Nov 2, 2026, against Nov 1, 2026 for Ultra Addons for Contact Form 7.
- Both are tested up to WordPress 7.1.4.
- Ultra Addons for Contact Form 7 has been around longer: since 2021, against 2022 for Duplicate Killer.
Line by line
Ultra Addons for Contact Form 7 leads on 4 of 6 comparable lines.
| Metric |  Duplicate Killer |  Ultra Addons for Contact Form 7 |
|---|---|---|
| Popular rank | #6,197 | #648 |
| Active installs | 1K+ | 60K+ |
| Downloads, last 30 days | 2.8K | 64.1K |
| Rating | 5.0(3) | 4.8(108) |
| Support threads resolved | – | 80% |
| Tested up to | 7.1.4 | 7.1.4 |
| Search multiplier | ×0.63 | ×1.68 |
| Last release | 8 days ago | 9 days ago |
| Requires PHP | 5.6.20 | 7.4 |
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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