What is Someday?

Someday is an open-source scheduling tool for Gmail users who want a free, self-hosted alternative to Calendly. It runs as a Google Apps Script deployed to your own Google account, connecting directly to Google Calendar to show availability and book appointments. The frontend is built with modern web technologies while the backend runs on Google Apps Script deployed via clasp. You can customize work hours, time zones, and which calendars to check. The booking page includes dark mode and works on mobile devices. No separate server or database is required — everything runs on Google's infrastructure.

Should you self-host Someday?

Someday scores 50/100 on selfhost.directory (how scoring works) and ranks #15 of 30 in Calendar & Contacts. It has 1 063 GitHub stars.

There was no stable release in the past 12 months, so check the repository's recent activity before you rely on it.

Setup is moderate: expect some configuration beyond a single command. It is MIT-licensed and written mostly in Typescript.

Its closest alternative on selfhost.directory is Cal.dyi (81/100, 49 478 stars). It scores higher overall, so compare the two before you pick. See Someday vs Cal.dyi side by side.