kycalendar

Start here: Standalone installation. Create personal calendars, events and local groups, share group calendars, and connect CalDAV clients using per-device app passwords. Local administrator and everyday accounts work without KyIdentity. KyPost invitation delivery and other suite integrations require separate setup.

KyCalendar is the Busnes.app suite calendar: personal calendars served to the web app and to native CalDAV clients (iOS and macOS Calendar, DAVx5, Thunderbird) with per-device app passwords. Built on the suite server base: Go backend, embedded React PWA, SQLite or PostgreSQL, local and federated sign-in (KyIdentity or any OpenID Connect provider), SCIM provisioning, and disaster recovery through the suite's KyRecovery.

Installer integration: product-owned setup contract.

What it can do

• Personal and group calendars, events and shared schedules.
• Local accounts/groups or optional KyIdentity sign-in and provisioning.
• CalDAV clients with per-device app passwords and scoped agent access.
• Sealed backups and a documented recovery procedure.

License

kycalendar is released under the MIT License.

Documentation

• Key strength and TLS — supported process/edge configuration and migration while retaining existing data and recovery keys.
• Running — Startup, Monitoring, Network and container defaults, Settings in .env, and related procedures.
• Accounts and groups — First sign-in, Local everyday accounts, Two-step verification, Administrators and group calendars, People, and related procedures.
• Clients — Connect a phone, Connect an AI agent.
• Recovery — Disaster recovery.
• Verifying releases — Check a release image's signature and source commit, and rebuild its binary.
• Assurance case — Threat model, trust boundaries, and why the security requirements are met.
• Contributing — How to report issues and send changes, test policy and coding standard.