Open source Scheduling

Cal.diy (Cal.com community edition)

98 · Healthy

MIT-licensed community fork of Cal.com with booking pages and calendar integrations; enterprise features removed.

Free to useMIT★ 49kLast commit 20 days ago

Rallly

70 · Stable

Group scheduling polls for finding a meeting time without accounts.

Free core, paid extrasAGPL-3.0★ 5.3kLast commit 2 days ago

Easy!Appointments

69 · Stable

Appointment booking app for service businesses, with Google Calendar sync.

GPL-3.0★ 4.4kLast commit 3 days ago

Easy!Appointments

Appointment booking app for service businesses, with Google Calendar sync.

GitHub easyappointments.org

Alternative to

Calendly Acuity Scheduling Calendesk

Will it still be around?

Stable

Score 69/100

Details

Can a business use it freely?

GPL-3.0 · open source (copyleft)

Details

Flat Rate Deploy

Monthly cost

Easy!Appointments on OpenTools: $15
Calendly: ~~$400~~

You save each month

$385/mo

96% less than today

Saving from month one

You save

Over 3 years: $13,860
In year one: $4,620

List price checked 7 Oct 2026 · Source · Disclaimer

Bespoke

We set up Easy!Appointments for you. You pay once.

You pay $400 a month for Calendly. Setup is $1,200, paid once, and after that Easy!Appointments runs for about $162 a month (your server, about $12, plus about $150 of maintenance), so it pays for itself in month 6.

Pays for itself: Month 6$1,656 saved in year one
Setup, paid once: $1,200fixed price, agreed up front
Maintenance: $150/houronly when you ask for it

What we do

Data migrationRecords, files and history moved from Calendly, with a test run before the cut-over
ConfigurationWorkflows, custom fields, roles, permissions and SSO set up for your team
IntegrationsConnected to your CRM, Slack, accounting tools and APIs
MaintenanceUpdates, fixes and admin help when you ask, at $150 an hour
Paid editionsThe vendor's paid features, enabled, with the licence at cost
ComplianceData residency, audit logs, data processing agreements, security questionnaires
TrainingAn admin walkthrough, a runbook and sessions for your team

Total spent, month by monthCalendlyBespoke Easy!Appointments

Show as a table

Month	Calendly	Bespoke	Saved so far
Today	$0	$1,200	–
Month 3	$1,200	$1,686	–
Month 6	$2,400	$2,172	$228
Month 9	$3,600	$2,658	$942
Month 12	$4,800	$3,144	$1,656
Month 18	$7,200	$4,116	$3,084
Month 24	$9,600	$5,088	$4,512
Month 30	$12,000	$6,060	$5,940
Month 36	$14,400	$7,032	$7,368

Servers run on your own cloud account, paid to your provider. Running cost counts about 1 hours of maintenance a month; you're billed only for hours you ask for. Migration and the other activities are quoted with the setup.

Get a fixed quote

Health score: 69/100

Stable · activity, bus factor and issue responsiveness, from GitHub

Score v2 · How it works

Activity

45% weight

100/100

Last commit 3 days ago (100/100).
310 commits in the past 12 months (100/100).
6 releases in the past 12 months (100/100).

Bus factor

30% weight

4/100

Top contributor wrote 97% of the last 91 commits (past 12 months).
2 people authored those commits.

Responsiveness

25% weight

90/100

90% of all issues are closed (143 open, 1269 closed) (100/100).
25 of 30 recent issues got a reply or were closed (83/100).

License

GPL-3.0 · Open source (copyleft)

GNU General Public License v3.0 · Open source (copyleft). OSI-approved license that requires sharing changes under the same license when you distribute (AGPL: also when you offer it over a network).

Detected by GitHub as GPL-3.0.

GitHub activity

Stars: 4.4k
Forks: 1.6k
Commits, 12 mo: 310; last 3 days ago
Releases, 12 mo: 6; last 5 months ago
Contributors: 100; 2 in last 91 commits
Open issues: 143; 1.3k closed

Snapshot from 2026-10-08

Top contributors

Points for pull requests merged into Easy!Appointments and reviews of them since 10 October 2025. Building something another user asked for earns more.

Bespoke · we set it up$1,200once Flat Rate Deploy$15/mo