3 alternatives to zcal
Compare free and open-source solutions before building your own. Check each option’s license, setup, and limitations.
One active event type and unlimited bookings; meeting polls survive, workflows and teams do not.
LicenseFree, closed source
PlatformsIn the provider’s cloud
InstallationHosted signup and one calendar connection
DataEvent-type settings, invitee answers, scheduling activity and account data live in Calendly's cloud; confirmed meetings are synchronized to the connected calendar, and the internal storage format is not disclosed.
Limitations compared to zcalCalendly Free is dependable for one active event type, but zcal's personalized pages and group-poll experience become harder to reproduce once more than one booking flow is needed.
SetupSetup is clean, but the permanent free account is limited to one one-to-one event type and one connected calendar.
Facts verified 2026-08-10
Unlimited one-person booking types and paid bookings on one calendar; group meetings and fancy emails cost extra.
LicenseFree, closed source
PlatformsIn the provider’s cloud
InstallationHosted signup and one calendar connection
DataBooking types, attendee answers and booking records live in TidyCal's cloud and are synchronized to the connected calendar; the internal storage format is not disclosed.
Limitations compared to zcalTidyCal Free handles one-person booking links, but one connected calendar and no free group-meeting workflow make it a poor substitute for zcal's polls and multi-person scheduling.
SetupThere is no technical install hurdle, but free accounts get only one calendar connection and omit automatic video links, group meetings, custom emails, exports, analytics and API access.
Facts verified 2026-08-10
One booking page, but it keeps forms, payments, confirmations, polls and the calendar-overlay trick.
LicenseFree, closed source
PlatformsIn the provider’s cloud
InstallationHosted signup and one calendar connection
DataBooking-page configuration, form answers and appointment records live in YouCanBookMe's cloud, with events synchronized to the connected calendar; the internal storage format is not disclosed.
Limitations compared to zcalYouCanBookMe Free retains capable booking forms and polls, but one booking page and one connected calendar sharply limit the personalized set of scheduling pages zcal is built around.
SetupThe setup itself is clean; the first hard limit is one booking page and one connected calendar.
Facts verified 2026-08-10
Updated 2026-08-10 · no paid listings
RalllyA superb poller, but it does not also provide reusable one-to-one scheduling links.
| Tool | License | Setup | Platforms | Stars | Activity |
|---|---|---|---|---|---|
| Calendly Free | Free, closed source | Hosted by the provider | web, ios, android, browser-extension | — | — |
| TidyCal Free | Free, closed source | Hosted by the provider | web | — | — |
| YouCanBookMe Free | Free, closed source | Hosted by the provider | web, browser-extension | — | — |
zcal: People pay because a booking tool must never double-book them, leak private events, or send the wrong time to a client.
Is there a free alternative to zcal?
Yes: Calendly Free, TidyCal Free, YouCanBookMe Free. This page lists 3 free or open-source options. Check the limitations of each.
Should I build my own zcal?
Our verdict: Buildable. zcal's solo core is compact: build a personal freeform scheduling tool that reads one calendar, publishes availability, reserves a slot, and writes the event back. A competent builder can reach a useful personal version in one sitting, while the paid product mainly wins on OAuth, calendar reliability. The complete prompt is on the zcal page on Vibe Radar.
