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Outspline

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Outspline

Free

Free and open-source modular outliner · GPLv3

Every plan, in full

On the record

Add-ons
Outspline functionality can be extended with add-ons, which can be enabled or disabled as needed.kynikos.github.io · read 9 Oct 2026
Alarms
The application provides a tray icon and notifications for alarms, which can be snoozed or dismissed.github.com · read 9 Oct 2026
Availability
The maker's getting-started page says Outspline is pre-packaged only for Arch Linux and directs users of other operating systems to manual installation instructions.github.com · read 9 Oct 2026
Customization
The interface supports configurable global and contextual keyboard shortcuts and customization through a plain-text configuration file.kynikos.github.io · read 9 Oct 2026
Hierarchical notes
It stores text items hierarchically.kynikos.github.io · read 9 Oct 2026
License
Outspline is distributed under the GNU General Public License version 3.kynikos.github.io · read 9 Oct 2026
Purpose
Outspline is a modular outliner whose Organism add-on adds time management for todo lists, task scheduling, and event reminders.kynikos.github.io · read 9 Oct 2026
Recurring events
Items can have multiple event rules, including rules for complex recurrences.kynikos.github.io · read 9 Oct 2026
Release
The product homepage lists version 0.8.4, released on 2018-02-04.kynikos.github.io · read 9 Oct 2026
Schedule view
The schedule can highlight unallocated time and overlapping events, and schedule views can be exported as plain text.kynikos.github.io · read 9 Oct 2026
Support
The project lists a SourceForge forum, an Arch Linux forum thread, a mailing list, a bug tracker, and email as ways to contact the developer.github.com · read 9 Oct 2026
Time zones
Event times can use local time or UTC.kynikos.github.io · read 9 Oct 2026

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