Markwhen creates cascading timelines from Markdown-like text, with date formats, links, images, and location support described in its repository.
Open source
24 alternativesTimeline Cascade
Markwhen is a Markdown-like language for writing journals, logs, Gantt charts, and timelines.
About Timeline Cascade
Markwhen is a Markdown-like language for writing things that happen over time, such as logs, journals, diaries, notes, to-dos, Gantt charts, timelines, calendars, feeds and blogs. Entries written in the language can be rendered as JSON, a timeline, a calendar or a oneview display. The parser issues a warning when no timezone is set in the header, where specifying one is recommended.
The Meridiem editor for Markwhen and Markdown adds collaborative editing, autocomplete, snippets, custom commands, event highlighting and custom visualizations. Markwhen also has a VS Code extension, an Obsidian plugin and a command-line tool, and the Remark.ing site presents each Markwhen entry as a tweet-like remark. Pricing is not stated on the homepage.
Key features
- Markdown-like syntax for logs, journals, timelines, Gantt charts and calendars
- Renders entries as JSON, timeline, calendar or oneview output
- Supports groups, tags, checklists, links, frontmatter and properties
- Custom date formats, timezones and recurring events
- Meridiem editor: collaborative editing, autocomplete, snippets, custom commands, event highlighting
- VS Code extension, Obsidian plugin and command-line tool
Best for: Writers, journalers and planners who prefer plain text and want their dated entries shown as timelines, calendars or Gantt-style charts.
Good for
- Entries are written in a readable Markdown-like syntax rather than a graphical editor
- The same input can be output as JSON, a timeline, a calendar or a oneview display
- Editors and integrations exist for the browser (Meridiem), VS Code, Obsidian and the command line
Watch out for
- Omitting a timezone in the header produces a parser warning, and specifying one is recommended
- Pricing is not stated on the homepage
Timeline Cascade at a glance
- Website
- markwhen.com
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Timeline Cascade FAQ
What kinds of documents can be written in Markwhen?
Logs, journals, diaries, notes, to-dos, Gantt charts, timelines, calendars, feeds and blogs, or anything else that happens over time.
What output formats does Markwhen provide?
Output can be JSON, a timeline, a calendar or a oneview display.
Is there an editor for Markwhen?
Meridiem is a Markwhen and Markdown editor with collaborative editing, custom commands, snippets, custom visualizations, autocomplete and event highlighting.
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