diff --git a/README.md b/README.md
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+++ b/README.md
@@ -1223,6 +1223,7 @@ Table of Contents
   * [Bricks Note Calculator](https://free.getbricks.app/) - a note-taking app (PWA) with a powerful built-in multiline calculator.
   * [Code Time](https://www.software.com/code-time) - an extension for time-tracking and coding metrics in VS Code, Atom, IntelliJ, Sublime Text, and more.
   * [ConfigCat](https://configcat.com) - Cross-platform feature flag service. SDKs for all major languages. Free plan up to 10 flags, 2 environments, 1 product and 5 Million requests per month. Unlimited user seats. Students get 100 flags and 100 Million requests per month for free.
+  * [datelist.io](https://datelist.io) - Online booking / appointment scheduling system. Free up to 5 bookings per month, includes 1 calendar
   * [docsapp.io](https://www.docsapp.io/) — Easiest way to publish documentation, free for Open Source
   * [Elementor](https://elementor.com) — WordPress website builder. Free plan available with 40+ Basic Widgets.
   * [Form2Channel](https://form2channel.com) — Place a static html form on your website and receive submissions directly to Google Sheets, Email, Slack, Telegram or Http. No coding necessary.