diff --git a/5_Privacy_Respecting_Software.md b/5_Privacy_Respecting_Software.md
index 3d4f99c..264190a 100644
--- a/5_Privacy_Respecting_Software.md
+++ b/5_Privacy_Respecting_Software.md
@@ -1357,7 +1357,7 @@ Moving away from Google, and using multiple alternative apps will mean there is
 - Authenticator: [Aegis](https://getaegis.app) (Android), [AndOTP](https://github.com/andOTP/andOTP) (Android), [Authenticator](https://github.com/mattrubin/authenticator) (ios)
 - Blogging: [Write Freely](https://writefreely.org), [Telegraph](https://telegra.ph), [Ghost](https://ghost.org) (Self-Hosted)
 - Browsers: [Brave](https://brave.com/?ref=ali721), [Firefox](https://www.mozilla.org/firefox) (with some [tweaks](https://restoreprivacy.com/firefox-privacy/)), [Vivaldi](https://vivaldi.com)
-- Calendar: [EteSync](https://www.etesync.com/accounts/signup/?referrer=QK6g), [ProtonCalendar](https://protonmail.com/blog/protoncalendar-beta-announcement), [NextCloud Calendar](https://apps.nextcloud.com/apps/calendar) (self-hosted)
+- Calendar: [EteSync](https://www.etesync.com/accounts/signup/?referrer=QK6g), [ProtonCalendar](https://protonmail.com/blog/protoncalendar-beta-announcement), [NextCloud Calendar](https://apps.nextcloud.com/apps/calendar) (self-hosted), [Radicale](https://radicale.org/v3.html) (self-hosted, also supports contact lists)
 - Cloud: [Njalla](https://njal.la), [Vindo](https://www.vindohosting.com), [Private Layer](https://www.privatelayer.com)
 - DNS: [Cloudflare](https://blog.cloudflare.com/announcing-1111), [Quad9](https://www.quad9.net)
 - Docs: [NextCloud](https://nextcloud.com), [CryptPad](https://cryptpad.fr)