Free and open first
Best Availability Management in 2026
- 30 apps
- Research read 10 Oct 2026
- How the order is worked out
- 1
Amion
Free plan AndroidAPIiPhone+3Amion brings schedule creation, staff requests, shift swaps, and department-level on-call information into one scheduling service.
- 2
- 3
- 4
Microsoft Planner
by Microsoft PlannerFree plan AndroidAPIiPhone+1Planner consolidates Microsoft 365 task and project work with several views, integrations and API support.
- 5
Appointlet
Free plan WebAppointlet combines booking pages with team scheduling and payment collection. The free plan has clear member, meeting, and page limits, while Premium adds integrations and booking controls.
- 6
Bookwhen
Free plan APIWebChoose Bookwhen if you need booking pages with recurring schedules, multiple registration options, and online or offline payment methods.
- 7
MRBS
Free plan LinuxSelf-hostedWebMRBS provides recurring bookings, schedule views, reports, and configurable access for shared resources. It requires a self-hosted installation and the server components specified in its guide.
- 8
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- 11
Sling
Free plan AndroidAPIiPhone+1Sling combines scheduling, team communication, and workforce-management features across free and paid plans. Check plan differences and mobile app requirements against your team's needs.
- 12
- 13
SimplyBook.me
by SimplyBook.meFree plan WebiPhoneAndroidSimplyBook.me covers client bookings, payments, reminders, and team calendars across web and mobile. The free tier is ongoing but limited, and HIPAA-enabling features need specific settings.
- 14
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Acuity Scheduling
by Acuity SchedulingFree trial AndroidAPIiPhone+1Acuity combines self-service booking with payment collection, calendar sync, and client-management features.
- 16
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TidyCal
Free plan WebTidyCal covers booking pages, calendar syncing, payment collection, and team scheduling, with storefronts across all plans.
- 18
YouCanBookMe
by YouCanBookMeFree plan WebYouCanBookMe covers individual, group and multi-host bookings, with calendar sync, payment collection and team administration.
- 19
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Joan Workplace
Free trial AndroidAPIiPhone+1Joan Workplace brings desk and room coordination together with attendance and utilisation data.
- 21
- 22
Chili Piper
by Chili PiperPaid AndroidAPIExtension+2Chili Piper offers booking and scheduling capabilities across plans with distinct seat and credit allocations.
- 23
QReserve
Free trial APISelf-hostedWebQReserve combines reservations, resource tracking, billing, and workflow controls for organizational scheduling.
- 24
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#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price
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