Codex alternatives

12 Windows apps in the same category as Codex, ranked by what they have in common and by popularity.

• 
  Obsidian

  Obsidian is the private and flexible writing app that adapts to the way you think.

  Proprietary 1.14.5 337.3K ↓ ★ 22.5K note, notes
• 
  QOwnNotes

  QOwnNotes is the open source notepad with markdown support and todo list manager

  Open source 26.10.12 100.4K ↓ ★ 5.9K notes, notebook, notetaking
• 
  Logseq

  A privacy-first, open-source platform for knowledge management and collaboration

  Open source 2.0.2 29.3K ↓ ★ 45.3K note, notes
• 
  Evernote

  Remember everything and tackle any project with your notes, tasks, and schedule all in one place.

  Proprietary 11.39.2 902.6K ↓ notes
• 
  TagSpaces

  Offline file organizer and browser with tagging support.

  Open source 6.14.3 14.9K ↓ ★ 5.3K electron, note
• 
  Notesnook

  A fully end-to-end encrypted note taking alternative to Evernote.

  Open source 3.4.9 24.3K ↓ ★ 14.8K electron, notes, notebook
• 
  Super Productivity

  Personal Task Management App to help you with your daily struggle with JIRA etc.

  Open source 19.3.0 18.8K ↓ ★ 23.1K
• 
  AFFiNE

  A privacy-focused, local-first, open-source, and ready-to-use alternative for Notion & Miro. One hyper-fused platform for wildly creative minds.

  Proprietary 0.27.4 6.8K ↓ ★ 73.8K notes
• 
  Boost Note

  An intuitive and stylish markdown note app for the developers.

  Open source 0.23.1 25.3K ↓ ★ 4K electron, note, programmer
• 
  Xournal++

  Take handwritten notes with ease.

  Open source 1.3.8 19K ↓ ★ 15.6K notes, notetaking
• 
  Notable

  The Markdown-based note-taking app that doesnt suck.

  Proprietary 1.8.4 9.2K ↓ ★ 23.5K electron, note, notes
• 
  CherryTree

  A hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file.

  Open source 1.7.2 34.4K ↓ ★ 4K note, notes

Comparison

App	Licence	Version	Updated	GitHub stars	Chocolatey downloads
Codex	Other licence	2.0.5	March 24, 2025	583	—
Obsidian	Proprietary	1.14.5	October 23, 2026	22.5K	337.3K
QOwnNotes	Open source	26.10.12	October 26, 2026	5.9K	100.4K
Logseq	Open source	2.0.2	October 7, 2026	45.3K	29.3K
Evernote	Proprietary	11.39.2	October 22, 2026	—	902.6K
TagSpaces	Open source	6.14.3	October 16, 2026	5.3K	14.9K
Notesnook	Open source	3.4.9	October 15, 2026	14.8K	24.3K
Super Productivity	Open source	19.3.0	October 24, 2026	23.1K	18.8K
AFFiNE	Proprietary	0.27.4	August 26, 2026	73.8K	6.8K
Boost Note	Open source	0.23.1	November 29, 2021	4K	25.3K
Xournal++	Open source	1.3.8	September 26, 2026	15.6K	19K
Notable	Proprietary	1.8.4	March 30, 2021	23.5K	9.2K
CherryTree	Open source	1.7.2	August 23, 2026	4K	34.4K