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wp.org search vs our merit ranking: “cache purging”

wp.org orders by popularity, so a plugin a host bundled onto millions of sites, or a big-brand one that's slow and mediocre, can sit at the top. Our ranking is built to answer a different question: which of these is actually worth installing. How this works →

For “cache purging”, we agree with wp.org on the top plugin, and our order differs from theirs on 11 of the top 20. 4 plugins are pushed down for signals wp.org ignores: errors, a host-installed base, or removal risk.

wp.org search ranks on

Install count (uncapped), the raw star average, freshness, and support. Popularity dominates, so the biggest install base usually wins regardless of how it got there.

We add

A cap on the install boost, volume-weighted ratings, and signals wp.org can't see: whether it throws errors on current PHP, whether the install base is organic or host-pushed, and its risk of being pulled.

Ranked above its merit

The Cache Purger shows at wp.org #7 but places #18 on merit, a gap of 11 places. Its 1K+ installs carry it up the search order; its 4.5★ average from 6 reviews, plus freshness and upkeep, place it lower on our volume-weighted scale.

Buried gem

Comet Cache places #7 on merit, 4.4★ from 108 reviews, but shows at wp.org #20. A smaller install base keeps it further down the default search order than its quality signals alone would.

merit plugin wp.org
1 LiteSpeed Cache 7M+ · 4.8★ (2778) wp.org #1 2 W3 Total Cache 900K+ · 4.4★ (5420) wp.org #2 ↑2 3 WP Fastest Cache – WordPress Cache Plugin 1M+ · 4.9★ (4228) wp.org #3 ↓1 4 Super Page Cache – Cloudflare Cache, Page Speed & Core Web Vitals 70K+ · 4.8★ (517) wp.org #4 ↓1 5 WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 1M+ · 4.8★ (2617) wp.org #5 6 Powered Cache – Caching and Optimization for WordPress – Easily Improve PageSpeed & Web Vitals Score 3K+ · 4.8★ (58) wp.org #6 ↑1 7 Comet Cache 20K+ · 4.4★ (108) wp.org #20 ↓2 13 too low 8 FastPixel Cache – Optimize Page Speed: Compress Images, Minify, Clean Database & CDN 4K+ · 4.8★ (50) wp.org #15 7 too low 9 atec Cache APCu 3K+ · 4.9★ (21) wp.org #13 4 too low 10 Hestia Nginx Cache 1K+ · 5.0★ (9) wp.org #9 1 too high 11 Proxy Cache Purge 50K+ · 4.4★ (26) wp.org #8 3 too high 12 SpeedyCache – Cache, Optimization, Performance 500K+ · 4.4★ (30) wp.org #11 1 too high 13 LWS Optimize – All-in-One Speed Booster & Cache Tools 20K+ · 4.6★ (9) wp.org #10 3 too high 14 Nginx Helper 200K+ · 4.4★ (31) wp.org #19 ↓2 5 too low 15 CDN Enabler 10K+ · 4.1★ (51) wp.org #24 ↓1 9 too low 16 xSpeed Cache: AI-Powered Performance Hub with MCP, Caching & CDN 10K+ · 5.0★ (22) wp.org #23 7 too low 17 Easy Optimizer – PageSpeed, Cache & Core Web Vitals (Unused CSS, Delay JS, Lazy Load) 1K+ · 4.6★ (18) wp.org #18 ↑4 1 too low 18 The Cache Purger 1K+ · 4.5★ (6) wp.org #7 ↓1 11 too high 19 WPGraphQL Smart Cache 5K+ · 5.0★ (4) wp.org #12 7 too high 20 S Server-Side Cache AutoPurge 10K+ · 4.2★ (5) wp.org #14 6 too high 21 SuperFlare Cache – Cloudflare Cache & Auto-Purging 60+ · 4.4★ (9) wp.org #16 ↑3 5 too high 22 Servebolt Optimizer 1K+ · 5.0★ (5) wp.org #21 ↓1 1 too high 23 Nginx Cache Purge Preload 200+ · 5.0★ (4) wp.org #22 ↓1 1 too high 24 Pantheon Advanced Page Cache 10K+ · 5.0★ (1) wp.org #17 ↓1 7 too high

Merit ranking caps the install boost at 1M (wp.org leaves it uncapped), replaces the raw star average with a volume-weighted Bayesian score and a Wilson lower bound, and keeps wp.org's own freshness and compatibility decays. Method from the plugin-directory source; see Meta Trac #8298. Positions are tracked daily from the first visit to a keyword, so the small arrows show movement since tracking began.