when ☆
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Description:
Tiny personal calendar
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: Productivity
Tags: calendar cli productivity terminal planner
Install: brew install when
About:
When is a lightweight, terminal-based personal calendar and reminder tool. It allows users to manage appointments and recurring events using simple plain-text files. Its main value proposition is providing a distraction-free, scriptable scheduling solution without the overhead of graphical interfaces.
Key Features:
  • Terminal-based interface for fast interaction
  • Plain-text data storage for easy version control
  • Supports recurring events and natural date parsing
  • Minimal dependencies and lightweight footprint
Use Cases:
  • Managing personal appointments and reminders in a CLI environment
  • Integrating calendar data into shell scripts or automation workflows
  • Maintaining a portable, privacy-focused schedule
Alternatives:
  • khal – khal is a more feature-rich CLI calendar with CalDAV support, whereas When focuses on simplicity and plain-text storage.
  • cal – The standard Unix cal command only displays a calendar grid, lacking event management capabilities.
Version History
Detected Version Rev Change Commit
Sep 11, 2025 9:10pm 0 VERSION_BUMP fc8bc3bb
Sep 19, 2023 12:51am 0 VERSION_BUMP 8420ead5
Mar 9, 2023 8:05am 0 VERSION_BUMP 62faa1b6
Dec 8, 2022 3:07am 0 VERSION_BUMP 25b408b7
Dec 8, 2022 3:07am 0 VERSION_BUMP 10e707a7
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