Radicale

OPEN SRC

Simple calendar and contact server with extremely low administrative overhead

► Ideal for individuals and small groups seeking a self-hosted, lightweight CalDAV/CardDAV server.

VG SCORE

7.2

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Product Details

PricingOpen Source

API✅ REST

Learning CurveModerate

Integrations8 available

■ INTELLIGENCE BRIEFING — Weekly tool drops. No spam.

PROS & CONS

STRENGTHS

Extremely lightweight with very low resource usage.
Very lightweight and resource-efficient, ideal for low-power systems like Raspberry Pi.
Completely free and open-source software.

WEAKNESSES

−Lacks advanced features like shared calendars with fine-grained permissions or built-in CalDAV scheduling.
−Limited built-in user interface, requiring third-party clients or tools for calendar management.

KEY FEATURES

CalDAV & CardDAV Support

Full support for calendar and contact synchronization standards.

CalDAV & CardDAV Server

Hosts calendars and address books using standard protocols.

Self-Hosted

Gives users complete control over their data by hosting it themselves.

Simple Installation

Easy to set up with minimal dependencies and configuration.

WHO IS Radicale BEST FOR?

Small businesses or non-profits

They need a self-hosted, cost-effective calendar and contact solution without complex setup or licensing fees.

Tech-savvy individuals or privacy-focused users

They want full control over their personal scheduling and contact data with minimal server resource usage.

INTEGRATIONS

WebDAV-compatible toolsDAVx⁵CardDAV clients (e.g., iOS Contacts, Android DAVx⁵)ownCloudCalDAV clients (e.g., Apple Calendar, Thunderbird)SOGoNextcloudBaïkal