Head-to-head · October 2026
Reference vs Zephyr Project Manager
Zephyr Project Manager comes out ahead, winning 6 of 7 head-to-head checks against Reference.
Reference
Reference is a WordPress Knowledgebase plugin that helps you manage your Knowledgebase articles quickly…
Zephyr Project Manager
Zephyr Project Manager is a modern, easy to use project manager for WordPress, to help manage all your…
| Metric | Reference | Zephyr Project Manager |
|---|---|---|
| Active installs | 80+ | 1K+ |
| Downloads (30 days) | 74 | 966 |
| Download trend | +64.4% | -25.6% |
| Rating | — | 4.8/5 |
| Reviews | 0 | 98 |
| Health score | 25/100 | 71/100 |
| Last updated | 8 years ago | 2 months ago |
| Tested up to | WP 4.8.0 | WP 7.1.2 |
| Support resolved | — | 0% |
| Requires PHP | Any | 5.2.4+ |
| First released | Jun 2017 | Aug 2018 |
Daily downloads, last 90 days
ReferenceZephyr Project Manager
Choose Reference if…
You care most about download trend.
- Small user base (80+ active installs)
- Very few reviews so far
- No update in 8 years
- Only tested up to WordPress 4.8 (latest is 7.1)
Choose Zephyr Project Manager if…
You care most about active installs, downloads (30 days) and reviews.
- Loved by users — 4.8/5 from 98 reviews
- Tested with the latest WordPress (7.1)
Both compete in: collaboration
FAQ
Reference vs Zephyr Project Manager: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 4, 2026
Which is better, Reference or Zephyr Project Manager?
Zephyr Project Manager comes out ahead, winning 6 of 7 head-to-head checks against Reference. Choose Reference if you care most about download trend. Choose Zephyr Project Manager if you care most about active installs, downloads (30 days) and reviews.
Is Reference more popular than Zephyr Project Manager?
Zephyr Project Manager is the more popular of the two with 1K+ active installs, compared with 80+ for Reference.
Can I use Reference and Zephyr Project Manager together?
Both plugins cover collaboration, so most sites only need one. Running two plugins that do the same job can cause conflicts and slow your site down — pick the one that fits best and remove the other.
Are Reference and Zephyr Project Manager free?
Yes. Both are free to download from the official WordPress.org plugin directory. Either may also offer paid upgrades from its developer.
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