Hexstone Calendar: a fully self-hosted,

Hexstone Calendar: a fully self-hosted, rebranded scheduling platform. I forked Cal.com's open-source edition, deployed it on Railway with its own Postgres and custom domain, and rebuilt the whole brand layer in Hexstone's neon-green and black. Wired up real Google Calendar and Google Meet sync plus Resend for transactional email, then built a custom Teams module from scratch on top of the booking engine: collective and round-robin event types, least-recently-booked assignment and a public team booking page. Tested end to end on production, from signup to a confirmed booking.