AltCatalog
CatalogPersonal knowledge management

Personal knowledge management

22 apps ranked by verified data. See how ranking works

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01

Design-focused documents with blocks and daily notes.

Proprietary WindowsmacOSiOSAndroid +1
Alt Score

Alt Score · 87

How this alternative ranks. How it works →

Verified coverage 90%86
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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02

Visual whiteboard notes for research thinking.

Proprietary WindowsmacOSLinuxiOS +2
Alt Score

Alt Score · 87

How this alternative ranks. How it works →

Verified coverage 90%86
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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03

Open source Notion-style workspace, self-hostable.

AGPL-3.0 WindowsmacOSLinuxiOS +2
Alt Score

Alt Score · 84

How this alternative ranks. How it works →

Verified coverage 90%82
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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04

Self-hostable hierarchical note tree with scripting.

AGPL-3.0 WindowsmacOSLinuxWeb
Alt Score

Alt Score · 84

How this alternative ranks. How it works →

Verified coverage 90%82
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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05

All-in-one workspace for notes, docs and databases.

Proprietary WindowsmacOSiOSAndroid +2
Alt Score

Alt Score · 81

How this alternative ranks. How it works →

Verified coverage 90%79
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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06

Open source outliner on local markdown files.

AGPL-3.0 WindowsmacOSLinuxiOS +2
Alt Score

Alt Score · 81

How this alternative ranks. How it works →

Verified coverage 90%79
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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07

Local-first markdown vault with a huge plugin ecosystem.

Proprietary WindowsmacOSLinuxiOS +1
Alt Score

Alt Score · 78

How this alternative ranks. How it works →

Verified coverage 90%75
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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08

Supertag outliner for structured personal knowledge.

Proprietary WindowsmacOSLinuxiOS +2
Alt Score

Alt Score · 78

How this alternative ranks. How it works →

Verified coverage 90%75
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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09

Local-first object-based knowledge base, E2E encrypted.

Proprietary WindowsmacOSLinuxiOS +1
Alt Score

Alt Score · 78

How this alternative ranks. How it works →

Verified coverage 90%75
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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10

Card-based networked notes.

Proprietary WindowsmacOSLinuxiOS +2
Alt Score

Alt Score · 78

How this alternative ranks. How it works →

Verified coverage 90%75
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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11

Visual tile-based workspace.

Proprietary WebWindowsmacOSiOS +1
Alt Score

Alt Score · 74

How this alternative ranks. How it works →

Verified coverage 90%71
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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12

Object-based notes organized by type, not folders.

Proprietary WindowsmacOSLinuxiOS +2
Alt Score

Alt Score · 71

How this alternative ranks. How it works →

Verified coverage 90%68
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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13

Markdown knowledge base for devs.

GPL-3.0 WindowsmacOSLinuxiOS +2
Alt Score

Alt Score · 71

How this alternative ranks. How it works →

Verified coverage 90%68
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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14

Infinite outliner with mirrors and boards.

Proprietary WindowsmacOSLinuxiOS +2
Alt Score

Alt Score · 68

How this alternative ranks. How it works →

Verified coverage 90%64
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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15

Docs that behave like apps with formulas and automations.

Proprietary WebmacOSiOSAndroid
Alt Score

Alt Score · 68

How this alternative ranks. How it works →

Verified coverage 90%64
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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16

Idea walls instead of documents.

Proprietary WebmacOSWindowsiOS +1
Alt Score

Alt Score · 68

How this alternative ranks. How it works →

Verified coverage 90%64
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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17

Hierarchical notes inside VS Code.

Apache-2.0 WindowsmacOSLinux
Alt Score

Alt Score · 65

How this alternative ranks. How it works →

Verified coverage 90%61
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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18

Fast encrypted networked notes.

Proprietary WebmacOSiOSWindows
Alt Score

Alt Score · 65

How this alternative ranks. How it works →

Verified coverage 90%61
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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19
Mem

AI-organized notes.

Proprietary WebmacOSWindowsiOS
Alt Score

Alt Score · 61

How this alternative ranks. How it works →

Verified coverage 90%57
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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20

The networked-thought pioneer.

Proprietary WebiOSAndroidmacOS
Alt Score

Alt Score · 61

How this alternative ranks. How it works →

Verified coverage 90%57
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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21

Emacs' legendary plain-text organizer.

GPL-3.0 WindowsmacOSLinuxiOS +2
Alt Score

Alt Score · 59

How this alternative ranks. How it works →

Verified coverage 90%54
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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22

Roam-style graph in VS Code.

MIT WindowsmacOSLinux
Alt Score

Alt Score · 55

How this alternative ranks. How it works →

Verified coverage 90%50
Visibility 10%100

Verified coverage = sourced yes and partial answers in the category checklist. Visibility = relative app-page views on AltCatalog over 30 days, neutral below 500 category views. Payment, votes, and vendor opinions are never score inputs.

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