All in One SEO vs SiteSEO (September 2026)
Updated September 7, 2026 · Data from WordPress.org, refreshed daily · How this works
Both rank in the WordPress.org SEO Plugins top 10: All in One SEO at #3 and SiteSEO at #6. All in One SEO leads on 4 of the 5 measures we track. Every number below comes straight from WordPress.org and is refreshed every day.
All in One SEO
All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights)
AIOSEO is the WordPress SEO plugin. Boost SEO rankings with AI SEO tools, schema, meta descriptions, XML sitemaps & rank tracking.
SiteSEO
SiteSEO – SEO Simplified
SiteSEO is an easy, fast and powerful SEO plugin for WordPress. Unlock your Website's potential and Maximize your online visibility with our SiteSEO!
Who leads on what
All in One SEO leads on 4 of the 5 measures we track.
All in One SEO ranks higher on WordPress.org: #3 against #6 in SEO Plugins.
All in One SEO has more users: 2 million+ active installs against 500,000+.
Not enough reviews to compare ratings fairly: All in One SEO has 5,202, SiteSEO has 9. We compare ratings only above 50 reviews each.
All in One SEO has more reviews behind its score: 5,202 against 9.
All in One SEO was updated more recently, on August 28, 2026; SiteSEO on August 14, 2026.
Which one to pick
Each plugin is the better answer for the measure it actually leads on. Nothing here is a recommendation we invented.
All in One SEO
Pick All in One SEO if you go by where WordPress.org itself puts them, you want the plugin more sites already run, you want the score backed by more reviews or you want the one shipping releases most recently.
SiteSEO
SiteSEO does not lead on any measure we track, so pick it only for something these numbers cannot show, such as a feature you need.
All in One SEO vs SiteSEO side by side
| All in One SEO | SiteSEO | |
|---|---|---|
| SEO Plugins ranking | #3 | #6 |
| Rating | 4.7 | 4.0 |
| Reviews | 5,202 | 9 |
| Active installs | 2 million+ | 500,000+ |
| Total downloads | 210,108,374 | 1,777,283 |
| Downloads, last 30 days | – | – |
| Last updated | Aug 28, 2026 | Aug 14, 2026 |
| First published | Mar 30, 2007 | Dec 29, 2023 |
| Tested up to WordPress | 7.1 | 7.1 |
| Requires PHP | 7.2 | 7.2 |
| Pricing | Free on WordPress.org | Free on WordPress.org |
30-day download figures appear after both plugins have 30 days of tracking.
All in One SEO ratings
SiteSEO ratings
How we compare these two
Every figure here is pulled from the WordPress.org plugin API every day at 03:00 UTC, for both plugins in the same run, so the two are always read on the same day. We compare only what the directory reports: active installs, the rating and how many reviews stand behind it, the last release date and, once we have a month of history, downloads over the last 30 days. Ratings are only called a win above 50 reviews each, because a handful of five-star reviews is not evidence. Nothing is weighted into an overall score, no measure is worth more than another, and neither All in One SEO nor SiteSEO can pay to appear here: the pair exists only because both plugins reached the SEO Plugins top 10. Full methodology.
All in One SEO vs SiteSEO: common questions
Is All in One SEO better than SiteSEO?
All in One SEO leads on 4 of the 5 measures we track. Neither is better at everything, and the answer depends on which measure you weigh. All in One SEO ranks higher on WordPress.org: #3 against #6 in SEO Plugins.
Which has more users, All in One SEO or SiteSEO?
All in One SEO ranks higher on WordPress.org: #3 against #6 in SEO Plugins.
Which is rated higher, All in One SEO or SiteSEO?
All in One SEO has more users: 2 million+ active installs against 500,000+.
Are All in One SEO and SiteSEO free?
Both are free to install from WordPress.org. All in One SEO may also sell a paid version or add-ons. SiteSEO may also sell a paid version or add-ons.
Alternatives to All in One SEO and SiteSEO
Plugins that score close to both in the same WordPress.org rankings and tags.
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