Census › Plugin profiles › CMB2
CMB2
Figures from the Plugin Directory Census · as of 28 Aug 2026
300,000
Active installs, lower bound
Group: 100,000 to 999,999 installs
89
Days since the last release
Group median: 12
5.0
out of 5, from 91 ratings
Group median: 4.7 (10+ ratings)
no threads
Support threads, two months
Group: 68.2%
Full profile on wordpress.orgShow on the mapCompare with your own plugins
What is CMB2 and who is behind it?
CMB2 is a WordPress plugin in the “Contact and email” field, made by Justin Sternberg. It has been listed in the directory since 16 Sept 2014, so for 11 years. It is the only plugin by Justin Sternberg with at least 10,000 installs. With 300,000 to 399,999 active installs it belongs to the 100,000 to 999,999 installs group; its last release came 89 days before the reference date, and it is tested up to WordPress 7.0.
This is how the author describes the plugin on wordpress.org:
“CMB2 is a metabox, custom fields, and forms library for WordPress that will blow your mind.”
Self-description on wordpress.org, retrieved on 10 Sept 2026
When was CMB2 last released?
The last release of CMB2 came 89 days before the reference date; the group median is 12 days.
How many installs does CMB2 have?
CMB2 had 300,000 to 399,999 active installs on the reference date. Within its group, 88 plugins had a higher band and 50 plugins the same band.
The API reports installs only as a lower bound with one significant figure: 300,000 means at least 300,000 and at most 399,999.
Which WordPress version is CMB2 tested with?
No directory notice: tested up to WordPress 7.0, while core stood at 7.1 on the reference date. The notice appears once the field falls below 6.9; that applied to 8.0% of the group.
How does CMB2 compare with its group?
The group holds 399 listed plugins. 81.7% of them had a more recent last release than CMB2; 5.3% had no release for more than 365 days.
| Figure | CMB2 | Group, 399 plugins |
|---|---|---|
| Days since the last release | 89 | median 12 |
| Rating | 5.0 (91) | median 4.7 (10+ ratings) |
| Support threads marked resolved | not stated | 68.2% |
| Tested up to | 7.0 | 47.6% on 7.1 |
| Requires PHP | 7.4 | most often 7.4 (41.6%) |
All values on the reference date
| Slug | cmb2 |
|---|---|
| Author | Justin Sternberg |
| Active installs | 300,000 to 399,999 |
| Last release | 89 days before the reference date |
| Tested up to | WordPress 7.0 · core on the reference date: 7.1 |
| Requires WordPress | 3.8 |
| Requires PHP | 7.4 |
| Rating | 5.0 out of 5 from 91 ratings |
| Support threads, two months | none in the window |
| Listed since | 16 Sept 2014 |
| Total downloads | 5,229,206, updates included |
| Tags | fields, forms, metaboxes, options, settings |
Tags
| Tag | Plugins with 10,000+ installs and this tag | Rank by installs | Median days since release |
|---|---|---|---|
| fields | 9 | 2 | 17 |
| forms | 33 | 6 | 10 |
| metaboxes | 2 | 2 | 50 |
| options | 5 | 2 | 177 |
| settings | 5 | 2 | 128 |
Rank 1 has the highest installation band among plugins with 10,000+ installs and this tag; equal bands share a rank.
Class of 2014
CMB2 has been listed since 16 Sept 2014. Of the 190 plugins with 10,000+ installs added in 2014, 78.4% released within the 365 days before the reference date.
Same group, shared tags
Not a recommendation; the same figures for comparison. Alphabetical.
| Plugin | Active installs | Last release | Rating |
|---|---|---|---|
| Advanced Custom Fields | 100,000 to 199,999 | 1 day before the reference date | 4.8 (132) |
| Brevo | 100,000 to 199,999 | 65 days before the reference date | 4.1 (285) |
| Conditional Fields for Contact Form 7 | 100,000 to 199,999 | 11 days before the reference date | 4.8 (166) |
| Crowdsignal Forms | 200,000 to 299,999 | 53 days before the reference date | 5.0 (3) |
| Fluent Forms | 700,000 to 799,999 | 6 days before the reference date | 4.8 (790) |
| Formidable Forms | 300,000 to 399,999 | 1 day before the reference date | 4.8 (1,380) |
| Forminator Forms | 600,000 to 699,999 | 1 day before the reference date | 4.8 (2,117) |
| FormLayer | 100,000 to 199,999 | 3 days before the reference date | not stated |
Do you maintain CMB2?
If you maintain CMB2, you can link to this profile, for example from your readme or your website. Both snippets show this badge:
HTML
<a href="https://hafenstudios.com/en/census/plugins/cmb2/"><img src="https://hafenstudios.com/census/plugins/badge-en.svg" alt="CMB2 in the Plugin Directory Census 01/2026" width="220" height="40"></a>
Markdown
[](https://hafenstudios.com/en/census/plugins/cmb2/)
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A value is wrong? Write to moin@hafenstudios.com; a documented correction leads to a new version.
How to cite
hafenstudios (2026): CMB2, profile in the Plugin Directory Census 01/2026, reference date 28 Aug 2026. https://hafenstudios.com/en/census/plugins/cmb2/
Source and status
All values come from the full pull of the public wordpress.org API on 28 Aug 2026 (reference time 21:56:30 UTC). The analysis and text on this page are available under CC BY 4.0; the raw values come from the public wordpress.org API and are in the raw data. How the count was made is set out in the method, what the fields do not say under limits. hafenstudios builds WordPress plugins itself, see the conflict of interest. Corrections to moin@hafenstudios.com; a documented correction leads to a new version. From issue 02 this page will also show the change since the previous reference date. Collected and prepared by Horst Wenzel.
Plugin names and trademarks belong to their owners. hafenstudios is not affiliated with the authors named here.
