Luka Breitig created and maintains Tymeslot. He built the scheduling engine, the CalDAV sync layer, the Phoenix LiveView booking UI, and the embeddable widget infrastructure: the systems documented in these pages. He works as a software engineer and AI developer.
His technical focus sits across two areas:
His other live projects include In A Nutshell (AI semantic search for video content with timestamp citations) and Transvexis (multilingual translation serving clients in 39+ languages).
Alongside building, Luka trains engineering teams on AI-assisted software development: agentic workflows, AI code review, and navigating unfamiliar codebases with tools like Claude Code and Cursor. He delivers workshops for organisations including NobleProg and Cegos Integrata, and has spoken at international developer conferences on AI integration and production patterns.
Tymeslot 1.23 to 1.25 add group bookings, availability that runs past midnight, Brazilian Portuguese, .ics import and reminder emails for meetings you add from the calendar.
Luka Breitig
14 October 2026 · 6 min read
Tymeslot 1.19 to 1.22 adds saved in-person locations, lets hosts add guests to bookings that already exist, makes recurring events editable as a series, and adds Polish.
Luka Breitig
2 October 2026 · 6 min read
Tymeslot 1.16 to 1.18 add time off, let bookers choose where a meeting happens, bring in kMeet, Jitsi Meet and Nextcloud Talk, and make rescheduling keep everything a booking had.
Luka Breitig
25 September 2026 · 5 min read
Tymeslot 1.12 to 1.15 lets you approve bookings before they confirm, connects on-premises Microsoft Exchange calendars, and lets you write your own booking page welcome, with a long run of reliability and calendar sync fixes alongside.
Luka Breitig
17 September 2026 · 7 min read
Tymeslot 1.9 to 1.11 add meeting polls for groups, up to five named availability schedules, and a dashboard that opens on your calendar.
Luka Breitig
19 August 2026 · 5 min read
Tymeslot 1.7 and 1.8 let any published calendar feed block your availability, cap how many bookings you take, issue invoices for paid bookings, and run the whole app in six languages.
Luka Breitig
12 August 2026 · 5 min read
Tymeslot 1.4 to 1.6 bring every integration onto one page with its health in view, sync event colours both ways, put a live agenda on the dashboard, and give self-hosters an external database option and more email providers.
Luka Breitig
31 July 2026 · 5 min read
A booking page looks like a form over a calendar. The hard part is that every calendar system disagrees about which events make you busy, and once my code answered that question in two places, the two answers disagreed too.
Luka Breitig
8 July 2026 · 13 min read
Tymeslot 1.3 turns the built-in calendar into somewhere you can run your day, adds Apple iCloud sync, and relicenses the code under AGPLv3.
Luka Breitig
1 July 2026 · 4 min read
Your Tymeslot booking page now goes into WordPress as a block, a shortcode or a floating button, using the same embed code your dashboard generates.
Luka Breitig
24 June 2026 · 3 min read
Tymeslot 1.2 adds guest attendees with email RSVPs, private and direct booking links, and rich previews when you share a link.
Luka Breitig
19 June 2026 · 4 min read
Tymeslot 1.1 adds custom booking questions, payment at the moment of booking, automatic Zoom meetings, and Slack notifications.
Luka Breitig
16 June 2026 · 4 min read
Four months after the first release, Tymeslot 1.0 does the whole scheduling job: booking pages, two-way calendar sync, video links, embedding, and five languages.
Luka Breitig
8 May 2026 · 3 min read
I put out the first version of Tymeslot two days ago. I built it because the scheduling tools I tried were either dated or too heavy to run myself.
Luka Breitig
4 January 2026 · 3 min read
Set up outgoing email for Tymeslot via SMTP or a provider API. Covers booking confirmations, reminders, and password resets. Includes steps for Gmail, Amazon SES, SendGrid, Mailgun, and AhaSend.
Configure Postmark for Tymeslot transactional email. Covers domain verification, DKIM/SPF setup, and delivery tracking for better deliverability than standard SMTP.
Set up a Google OAuth app in Google Cloud Console. One app powers Google Login, Calendar sync, and Meet rooms for Tymeslot. Covers API enabling and consent screen.
Register an Azure app for Tymeslot. Enables Outlook Calendar sync and Teams meetings. Covers API permissions and admin consent requirements.
Let your team and customers sign in to Tymeslot with their GitHub account. Create an OAuth app, set two environment variables, and you're done.
Connect any OAuth 2.0 / OpenID Connect identity provider for single sign-on. Supports Keycloak, Authentik, Lemonldap::NG, Okta, Azure AD, and more.