Markwhen
Claim this toolPlainly write logs, gantt charts, timelines, and more using a markdown-like journal language.
Visit WebsiteFreemiumVisit Website
Tracked since2026
0 reviews trackedThe Bottom Line
Entry price
Free plan available, paid tiers above
Biggest pro
Simple, human-readable syntax for time-based data
Biggest con
Requires learning a new syntax
TL;DR - Markwhen
- A markdown-like language for defining time-based events.
- Generates structured data (JSON) from plain text input.
- Supports various outputs like timelines, calendars, and logs.
Pricing: Free plan available
Best for: Growing teams
What is Markwhen?
Markwhen is a markdown-like journal language designed for easily creating time-based content such as logs, gantt charts, blogs, feeds, notes, journals, diaries, todos, timelines, and calendars. It allows users to define events and time ranges using a simple, human-readable syntax, which is then parsed into structured data like JSON. This structured output can be visualized in various formats, including timelines and calendars.
The ecosystem includes Meridiem, a collaborative editor that enhances the Markwhen experience with features like custom commands, snippets, visualizations, autocomplete, and event highlighting. For broader integration, Markwhen offers a VS Code extension and an Obsidian plugin, enabling users to leverage its capabilities within their preferred development and note-taking environments. It's ideal for anyone who needs to organize and visualize events over time with minimal effort, from developers tracking project milestones to individuals managing personal schedules.
Available on: Web, macOS, Windows, Linux
Pros & Cons
Pros
- Simple, human-readable syntax for time-based data
- Versatile for various use cases (timelines, logs, calendars)
- Integrates with popular tools like VS Code and Obsidian
- Outputs structured JSON for programmatic use
- Collaborative editing available through Meridiem
Cons
- Requires learning a new syntax
- Limited information on advanced features without documentation access
- Beta status for macOS editor might imply instability
Key Features
Markdown-like journal languageBasic syntax for events and datesSupport for groups and tagsChecklists and linksTimezone and recurrence definitionsFrontmatter and propertiesJSON outputTimeline visualization
Pricing Plans
Free TrialPricing checked Jul 13, 2026
Free
Free
- 1 user
- 1 project
- 100 MB storage
- Basic features
Basic
$10 / month
- 5 users
- 5 projects
- 1 GB storage
- Advanced features
Pro
$25 / month
- Unlimited users
- Unlimited projects
- 10 GB storage
- All features
- Priority support
How Markwhen's pricing compares
At $10/mo, Markwhen is the most premium of its 3 direct competitors.
Entry paid plan, monthly. Pricing checked Jul 13, 2026.
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Markwhen FAQ
How does Markwhen help in visualizing project timelines?
Markwhen allows users to define events and time ranges using a simple, markdown-like journal language. This input is then parsed into structured data, which can be visualized in various formats, including detailed timelines and gantt charts, making it useful for tracking project milestones.
Which teams would benefit most from using Markwhen?
Markwhen is ideal for teams or individuals who need to organize and visualize events over time with minimal effort. This includes developers tracking project milestones, content creators managing editorial calendars, or anyone needing to structure time-based data.
How is Markwhen's approach to diagrams different from Mermaid?
Markwhen focuses on creating time-based content like logs, gantt charts, and timelines using a markdown-like journal language. In contrast, Mermaid is a general-purpose diagramming tool that supports a wider array of diagram types beyond just time-based visualizations.
What kind of limitations should users be aware of when adopting Markwhen?
Users should be prepared to learn a new syntax, as Markwhen uses its own markdown-like journal language. Additionally, the macOS editor is currently in beta, which might imply potential instability or evolving features.
Does Markwhen integrate with existing development and note-taking workflows?
Yes, Markwhen offers integrations with popular tools to enhance existing workflows. It provides a VS Code extension for developers and an Obsidian plugin for note-takers, allowing users to leverage its capabilities within their preferred environments.
How is Markwhen priced?
Markwhen is available on a free tier, allowing users to get started without initial cost. For those requiring more extensive usage or additional features, paid plans are offered.
Can Markwhen be used for collaborative editing of time-based content?
Yes, Markwhen supports collaborative editing through Meridiem, its dedicated editor. Meridiem enhances the Markwhen experience with features like custom commands, snippets, visualizations, and event highlighting for shared work.
Source: markwhen.com