Meridiem (Markwhen)

Write dated events in plain text and view them as a timeline, calendar or Gantt chart.

Artifact by Markwhen

IndexedMIT★ 4,880Charts & diagramsNo sign-up

Open tool ↗

Write a review

Use it

Opens meridiem.markwhen.com in a new tab. Nothing to install.

Open Meridiem (Markwhen) Source code

You provide: Markwhen text events
You get: Timeline, calendar and Gantt views
Account: No sign-up needed
AI: No AI: a plain tool
Your input: Not stated: check the tool's privacy notes before using private data
Price: Free to use
Made with: Open-source web app
Source: Open source
Link check: Answered on Oct 31, 2026

About

Meridiem (Markwhen) is an open-source web app in the visualization category (timeline maker). It opens in your browser, so there is nothing to install. You provide markwhen text events and get timeline, calendar and Gantt views. It needs no account. It is a plain tool: no AI model is involved. The source code is public on GitHub (mark-when/markwhen).

Category: Charts & diagrams · timeline maker

Reviews

Write a review

No reviews yet. Used it? Sign in with an established GitHub account to rate it. How reviews work

More charts & diagrams tools

See all charts & diagrams tools →

Signals

Stars: 4,880

Details

Auth: No auth
License: MIT
Repository: github.com/mark-when/markwhen
Website: meridiem.markwhen.com/
First seen: Oct 31, 2026
Last checked: Oct 31, 2026
Source: GitHub

Cite this page

Meridiem (Markwhen): free online tool. Agent Mart. https://agentmart.dev/artifacts/meridiem-markwhen (last updated 2026-10-31)