WordPress plugin comparison
Knowledge Building vs Subscribe to Comments
Knowledge Building
by Tarmo Toikkanen
10+ installs5.0
Subscribe to Comments
by Mark Jaquith
10K+ installs3.9
At a glance
- Subscribe to Comments has more active installs: 10K+, against 10+ for Knowledge Building.
- On a typical day, Subscribe to Comments is downloaded about 70 times, Knowledge Building about 2.
- Knowledge Building is rated higher: 5.0 out of 5 from 1 review, against 3.9 from 14 reviews.
- Knowledge Building was updated more recently: Nov 7, 2026, against Oct 6, 2026 for Subscribe to Comments.
- Both are tested up to WordPress 7.1.4.
- Subscribe to Comments has been around longer: since 2005, against 2009 for Knowledge Building.
Line by line
Subscribe to Comments leads on 4 of 6 comparable lines.
| Metric | ||
|---|---|---|
| Popular rank | #43,561 | #1,584 |
| Active installs | 10+ | 10K+ |
| Downloads, last 30 days | 34 | 13K |
| Rating | 5.0(1) | 3.9(14) |
| Support threads resolved | – | – |
| Tested up to | 7.1.4 | 7.1.4 |
| Search multiplier | ×0.19 | ×0.77 |
| Last release | 2 days ago | 1 month ago |
| Requires PHP | 7.0 | 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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