WordPress plugin comparison
Hydrogen SEO vs SiteSEO
At a glance
- SiteSEO has more active installs: 400K+, against fewer than 10 for Hydrogen SEO.
- On a typical day, SiteSEO is downloaded about 876 times, Hydrogen SEO about 4.
- Hydrogen SEO has no reviews yet.
- Hydrogen SEO was updated more recently: Oct 14, 2026, against Sep 24, 2026 for SiteSEO.
- Both are tested up to WordPress 7.1.4.
- SiteSEO has been around longer: since 2023, against 2026 for Hydrogen SEO.
Line by line
SiteSEO leads on 4 of 5 comparable lines.
| Metric |  Hydrogen SEO |  SiteSEO |
|---|---|---|
| Popular rank | #61,014 | #135 |
| Active installs | Fewer than 10 | 400K+ |
| Downloads, last 30 days | 223 | 28.5K |
| Rating | No ratings | 4.0(8) |
| Support threads resolved | – | 100% |
| Tested up to | 7.1.4 | 7.1.4 |
| Search multiplier | ×0.05 | ×1.50 |
| Last release | 26 days ago | 1 month ago |
| Requires PHP | 7.4 | 7.2 |
From WordPress.org's public data, refreshed every night. Downloads are WordPress.org's official daily figures for the last 30 days.
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