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wp.org search vs our merit ranking: “time slot”

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 “time slot”, we agree with wp.org on the top plugin, and our order differs from theirs on 11 of the top 20.

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 the install base is organic or host-pushed, and its risk of being pulled.

Ranked above its merit

Time Slot – Booking and Appointment System shows at wp.org #2 but places #11 on merit, a gap of 9 places. Its 100+ installs carry it up the search order; its 5.0★ average from 4 reviews, plus freshness and upkeep, place it lower on our volume-weighted scale.

Buried gem

Appointment Hour Booking – Booking Calendar places #9 on merit, 4.9★ from 524 reviews, but shows at wp.org #15. A smaller install base keeps it further down the default search order than its quality signals alone would.

How this rank is calculated

Each plugin's merit score multiplies these inputs together: how recently it was updated, how current its "tested up to" WordPress version is, its install base (log scale, capped at 10 million), its support thread resolution rate, and a rating score. The rating score weights the star average by review volume against a sitewide prior, then scales it by the lower bound of the share of 4 and 5 star reviews. A plugin with 3.7 stars from tens of thousands of reviews can still outscore a 4.9 with a few dozen, because the small sample carries less certainty.

A health factor between 0.4 and 1.15 then adjusts that score for what wp.org's search can't see: PHP fatals or failed activations on a test install, PHP and WordPress compatibility, memory and page-speed footprint, suspicious review patterns, closure risk, and a large install base with very few reviews. Clean, adopted plugins earn a small lift.

A keyword ranking starts from wp.org's search order for the term, weighting each position by 1 divided by its place, then applies the merit correction and health factor above. Relevance to the keyword stays in the result, so the order can differ from the all-categories list on /best, which scores plugins with no search term.

Hover a row to see the main reason for its position.

merit plugin wp.org
1 WP Time Slots Booking Form 1K+ · 5.0★ (41) wp.org #1 2 Events Manager – Calendar, Bookings, Tickets, Appointments and more! 60K+ · 4.2★ (551) wp.org #4 2 too low 3 Booking for Appointments and Events Calendar – Amelia 90K+ · 4.6★ (793) wp.org #5 ↑2 2 too low 4 Simply Schedule Appointments 50K+ · 5.0★ (155) wp.org #6 ↓1 2 too low 5 Booking Calendar 40K+ · 4.8★ (657) wp.org #9 4 too low 6 Order Delivery Date And Time 1K+ · 4.6★ (19) wp.org #3 3 too high 7 PI Delivery & Pickup Date Time for WooCommerce 400+ · 4.8★ (90) wp.org #7 ↓1 8 Delivery & Pickup Date Time for WooCommerce 5K+ · 4.9★ (282) wp.org #11 ↑1 3 too low 9 Appointment Hour Booking – Booking Calendar 10K+ · 4.9★ (524) wp.org #15 6 too low 10 Delivery Date Time & Pickup for WooCommerce 400+ · 4.2★ (113) wp.org #8 2 too high 11 Time Slot – Booking and Appointment System 100+ · 5.0★ (4) wp.org #2 9 too high 12 Online Scheduling and Appointment Booking System – Bookly 60K+ · 4.4★ (586) wp.org #16 4 too low 13 Easy Appointments 10K+ · 4.3★ (131) wp.org #12 ↓1 1 too high 14 Availability Datepicker – Booking Calendar for Contact Form 7 – Input WP 10K+ · 4.1★ (42) wp.org #10 4 too high 15 Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress 100K+ · 4.9★ (107) wp.org #19 4 too low 16 Easy Appointment Booking & Scheduling Plugin – Webba Booking Calendar 2K+ · 4.9★ (159) wp.org #20 ↑2 4 too low 17 Appointment Booking Calendar 1K+ · 4.2★ (92) wp.org #17 18 Salon Booking System – Appointment Booking for Salons, Barbershops & Spas 2K+ · 4.4★ (187) wp.org #24 6 too low 19 Order Delivery Date for WooCommerce 10K+ · 4.3★ (61) wp.org #18 1 too high 20 Shipping Simulator for WooCommerce 6K+ · 5.0★ (40) wp.org #21 1 too low 21 Timetics – Appointment Booking Calendar & Scheduling 2K+ · 4.6★ (36) wp.org #22 ↓2 1 too low 22 Booking Package 10K+ · 4.0★ (15) wp.org #13 ↑1 9 too high 23 Rox Appointment Booking – Event, Calendar & Appointment Scheduling 2K+ · 5.0★ (7) wp.org #14 ↓1 9 too high 24 Sign-up Sheets 1K+ · 4.8★ (16) wp.org #23 ↓2 1 too high

Merit ranking caps the install boost at 10M (wp.org leaves it uncapped), replaces the raw star average with a volume-weighted 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.