Cal.com — WordPress Booking Plugin
by Cal.com · WordPress.org page
Cal.com has 1,000+ active installs on WordPress.org and 12,910 downloads all time. We have tracked it since September 4, 2026; download trends appear after 30 days of data. The last update was on April 6, 2026, tested up to WordPress 6.9.7.
Cal.com at a glance
Is Cal.com well maintained?
Features
The feature list from the plugin's own readme on WordPress.org, trimmed to the essentials.
- url: URL of the booking calendar
- type: Embed type (1 = inline, 2 = popup, 3 = floating button for [cal_custom])
- text: Button text for popup embeds
- prefill: Set to true to prefill user info if available
- utm: Comma-separated UTM tracking parameters (e.g., source:newsletter, medium:email)
- ui: JSON object for theme, layout, and visibility customization
- config: JSON object for advanced widget configuration (slots view, scrolling, etc.)
Cal.com reviews and ratings
2 reviews on WordPress.org, with the most recent ones as their authors posted them.
2 reviews
- 5★
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1
- 4★
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0
- 3★
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0
- 2★
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0
- 1★
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1
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Does not Work
This hasn't been tested for WordPress version 6.9 and it didn't work when I installed it. I just got "Error Code: 404. Call Link seems to be wrong." and couldn't resolve the issue. I suggest trying another solution.
kptguven -
My favorite calendar tool now has a killer WP plugin
If you haven't heard of Cal.com, they're a killer open-source alternative to Calendly (cal.com is a much better product design and UX wise, imo). They just launched a WP plugin for easy integration on your WordPress site. It definitely rocks and you should be using this plugin + product right away.
Alex Medick
Where Cal.com ranks on WordPress.org
The rankings we track that Cal.com appears in, and how its position changed over 30 days.
| Ranking | WordPress.org placement | Position | 30 days |
|---|---|---|---|
| Best Booking Plugins | #43 by tag, not in search | #78 | – |
Cal.com alternatives
Plugins that solve the same problem, ranked by how closely they overlap with Cal.com.
-
Wappointment 1,000+ installs · 4.7 -
Appointment Hour Booking 10,000+ installs · 4.9 -
Appointment Booking Calendar 1,000+ installs · 4.2 -
Webba Booking Calendar 2,000+ installs · 4.9 -
Timetics 2,000+ installs · 4.6
Details
Embed Cal.com booking calendar in WordPress with custom UI and admin widget support.
The full description, screenshots and every review live on the WordPress.org page.
Rankings Cal.com competes in
Tags
- appointment
- appointment booking
- appointment scheduling
- booking calendar
- calcom
- Version
- 2.1.0
- Last updated
- Apr 6, 2026
- First published
- Nov 15, 2022
- Requires WordPress
- 4.6
- Tested up to
- 6.9.7
- Requires PHP
- 7.4
- Pricing
- Free on WordPress.org
Cal.com FAQ
What does Cal.com do?
According to its WordPress.org readme, Cal.com offers url: URL of the booking calendar, type: Embed type (1 = inline, 2 = popup, 3 = floating button for [cal_custom]), text: Button text for popup embeds, prefill: Set to true to prefill user info if available and utm: Comma-separated UTM tracking parameters (e.g., source:newsletter, medium:email).
How many active installs does Cal.com have?
WordPress.org reports 1,000+ active installs for Cal.com as of September 7, 2026.
Is Cal.com still maintained?
Yes. The last release was on April 6, 2026 and it is tested up to WordPress 6.9.7.
Is Cal.com free?
Cal.com is free to install from WordPress.org. Many plugins also sell a paid version or add-ons.
Where does Cal.com rank among Booking Plugins?
Cal.com is #78 in the WordPress.org Booking Plugins ranking.