The Cal.com and Supabase teams collaborated on a new platform starter kit, leveraging their shared mission to build open source software. The application was initially built on SQLite but switched to Postgres three days before launch, utilizing Prisma for efficient connection management and multischema support. Supabase Storage provides secure file storage with integrated authentication, while the Cal.com team uses Next.js' Auth.js for authentication. A custom Next.js Image loader is also created to facilitate Supabase Storage usage. Additionally, a Vercel Integration allows for one-click deploys and environment variable syncing across branches. The starter kit is open source, allowing users to spin up their own marketplace with convenient scheduling in minutes and contribute additional features.