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Scheduling and staffing

15 scheduling and staffing listings with a free or open edition: 14 with a named customization surface, 11 with an interface an agent can drive.

Adaptable means the source is public and there is a named surface to change. Operable means an agent can drive it through an interface; the reach list on each page says which jobs. One entry in the directory, describing one piece of software in one form factor. The unit of the directory.

AdaptableOperable
calcom/cal.diy
Cal.diy
MIT community edition of Cal.com: self-hosted booking pages, event types and availability with API v2.
Yours
Config only22 to edit
Agent
Official API, partial reach
Type
Business app · Web app
Stack
TypeScript
MIT48,115 starsactive Sep 1, 2026
AdaptableOperable
alextselegidis/easyappointments
Easy!Appointments
Self-hosted appointment booking for providers and services with a Builder-published REST API and OpenAPI file.
Yours
Config only13 to edit
Agent
Official API, partial reach
Type
Business app · Web app
Stack
PHPJavaScript
GPL-3.04,351 starsactive Sep 2, 2026
AdaptableOperable
ever-co/ever-gauzy
Ever Gauzy
Open business platform with employee time tracking, HR and scheduling, and an official 323-tool MCP server.
Yours
Config only20 to edit
Agent
Official MCP server, partial reach
Type
Business app · Web app
Stack
TypeScript
AGPL-3.04,361 starsactive Sep 2, 2026
AdaptableOperable
frappe/hrms
Frappe HR
Open-source HR and payroll with shift types, assignments, checkins and auto attendance, reachable through the Frappe REST API.
Yours
Config only5 to edit
Agent
Official API, partial reach
Type
Business app · Web app
Stack
PythonJavaScript
GPL-3.08,712 starsactive Sep 1, 2026
AdaptableOperable
ridafkih/keeper.sh
Keeper.sh
Calendar sync across Google, Outlook, iCloud, Fastmail and CalDAV, with an MCP server and REST API from the Builder.
Yours
Config only19 to edit
Agent
Official MCP server, partial reach
Type
Product · Web app
Stack
TypeScript
AGPL-3.01,272 starsactive Sep 2, 2026
AdaptableOperable
kimai/kimai
Kimai
Self-hosted team time tracking with invoicing and a Builder-documented JSON API.
Yours
Config only6 to edit
Agent
Official API, partial reach
Type
Business app · Web app
Stack
PHPJavaScript
AGPL-3.04,954 starsactive Aug 31, 2026
AdaptableOperable
minthcm/minthcm
MintHCM
AGPL HR platform with time and attendance, leave and resource booking, shipping its own MCP server module with OAuth 2.1.
Yours
Config only6 to edit
Agent
Official MCP server, partial reach
Type
Business app · Web app
Stack
PHPTypeScript
AGPL-3.0432 starsactive Aug 20, 2026
AdaptableOperable
solidtime-io/solidtime
solidtime
Laravel time tracker for freelancers and agencies with a full REST API for entries, projects, reports and invoices.
Yours
Config only23 to edit
Agent
Official API, partial reach
Type
Business app · Web app
Stack
PHPTypeScript
AGPL-3.08,897 starsactive Sep 1, 2026
AdaptableOperable
almarklein/timetagger
TimeTagger
Tag-based personal time tracker with a documented web API that mirrors the hosted timetagger.app.
Yours
Config only11 to edit
Agent
Official API, partial reach
Type
Business app · Web app
Stack
Python
GPL-3.01,779 starsactive May 17, 2026
Adaptable
indico/newdle
newdle
CERN's Doodle-style meeting poll with Exchange free/busy, configured through one Flask config file.
Yours
Config only4 to edit
Type
Business app · Web app
Stack
PythonJavaScript
MIT118 starsactive Apr 24, 2026
AdaptableOperable
traggo/server
Traggo
Tag-based self-hosted time tracking in Go, driven by the same GraphQL API its UI uses.
Yours
Config only13 to edit
Agent
Official API, partial reach
Type
Business app · Web app
Stack
GoTypeScript
GPL-3.01,623 starsactive Jul 31, 2026
Adaptable
dennisklappe/CloudMeet
CloudMeet
Single-owner Calendly alternative that deploys to Cloudflare's free tier from GitHub secrets.
Yours
Config only15 to edit
Type
Business app · Web app
Stack
TypeScript
MIT523 starsactive Jul 2, 2026
Adaptable
tkrebs/ep3-bs
ep-3 Bookingsystem
MIT court and facility booking calendar used by sports clubs, configured through PHP config files.
Yours
Config only5 to edit
Type
Business app · Web app
Stack
PHPJavaScript
MIT216 starsactive Aug 15, 2026
Operable
googleworkspace/cli
Google Workspace CLI (gws)
One CLI over every Google Workspace API, with JSON output and agent skills for Calendar events, free/busy and agendas.
Agent
Official CLI, partial reach
Type
Product · CLI
Stack
Rust
Apache-2.030,708 starsactive Aug 25, 2026
Adaptable
rbbydotdev/someday
someday
Free booking page that runs inside your own Google account as an Apps Script web app.
Yours
Light edit4 to edit
Type
Business app · Web app
Stack
TypeScript
MIT1,063 starsactive Jul 20, 2026

Machine-readable: index/vertical/scheduling-staffing.json