Who is TreeSheets for?

TreeSheets is a consumer product built for knowledge workers and organizers.

Yes — TreeSheets is free to use.

Is TreeSheets still active?

Unverified. TreeSheets has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What are alternatives to TreeSheets?

Similar projects tracked by PulseGate include Math Editor, D365Hub, and paplo.

Who develops TreeSheets?

TreeSheets is developed by Wouter van Oortmerssen.

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TreeSheets

Name: TreeSheets
Author: Wouter van Oortmerssen

FlathubNotes & docs

TreeSheets is a free-form data organizer that combines the familiarity of spreadsheets with the structure of mind maps and outliners. It is suitable for managing todo lists, project planning, brainstorming, and organizing complex information.

FreeLinux

Visit Flathub

Overview

5 features

TreeSheets sits in PulseGate's Notes & docs category. Helping users organize complex data, notes, and tasks in a structured, hierarchical format beyond traditional spreadsheets. TreeSheets is a consumer product aimed at knowledge workers and organizers. TreeSheets costs nothing to use. It runs on Linux.

Wouter van Oortmerssen builds and maintains TreeSheets. Key capabilities include hierarchical data organization, spreadsheet interface, and mind mapping.

Hierarchical data organization
Spreadsheet interface
Mind mapping
Outlining
Multi-dimensional notes

Built with & integrations

Runs on

Linux

Trust & compliance

Verified signals

HTTPSFree tier

Indexing history

What PulseGate has recorded for this listing

Indexed1 Jul · 04:17 UTC
TreeSheets verified against its public source
Source: PulseGate · Open

Frequently asked questions about TreeSheets

What does TreeSheets do?: Helping users organize complex data, notes, and tasks in a structured, hierarchical format beyond traditional spreadsheets. It is catalogued under Notes & docs on PulseGate.
Who is TreeSheets for?: TreeSheets is a consumer product built for knowledge workers and organizers.
Is TreeSheets free?: Yes — TreeSheets is free to use.
What platforms does TreeSheets run on?: TreeSheets runs on Linux.
Is TreeSheets still active?: Unverified. TreeSheets has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What are alternatives to TreeSheets?: Similar projects tracked by PulseGate include Math Editor, D365Hub, and paplo.Math Editor D365Hub paplo
Who develops TreeSheets?: TreeSheets is developed by Wouter van Oortmerssen.

At a glance

Platforms: Desktop
Languages: English
Built for: knowledge workers and organizers
Model: B2C
Solves: Helping users organize complex data, notes, and tasks in a structured, hierarchical format beyond traditional spreadsheets.

Registered as

Flathub: com.strlen.TreeSheets

Developer

Wouter van Oortmerssen

Live coverage

Identity confidence: Medium · 70
Indexed: 1 Jul 2026
Lifecycle: Unverified
Last seen: 1 Jul 2026

Identity audit (12)

Slug: treesheets-flathub-org
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 1 Jul 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Written by a language model from the project's public pages.
Category from: Assigned by a language model.
Summary from: Taken from the project's own store listing.
Languages from: Detected by a language model from page content.
Last updated: 4 Aug 2026
Canonical URL: https://flathub.org/apps/com.strlen.TreeSheets

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