Free & Open Source

Visualize your Notes.

Create interactive timelines for worldbuilding and history. Local‑first and fully open source.

The Building Blocks

Events, Spans, and Eras.

Place a moment at a single point, stretch a period across centuries, and layer broad eras behind it all with three primitives that compose into any timeline you can imagine. Tags and groups make it easy to filter and organize everything.

Events

Pin a dated moment, parent it to a span, and customize it with thumbnail images and icons so key moments stand out at a glance.

Spans

Draw a period that runs from one date to another. Spans can branch from or merge into other spans to show how timelines split and converge.

Eras

Wrap stretches of time into named eras that wash across the whole canvas, giving structure and rhythm to even the busiest timeline.

Linked Notes

Keep your research beside the timeline.

Attach .md notes, sources, and MediaWiki content to any timeline element in the right panel. Set your notes folder to an existing vault to keep your research, lore, and context right alongside your timeline.

Multiple Views

More than a timeline.

Access the same timeline data through multiple interfaces, with map and spreadsheet views available now and additional views to follow.

Map View

Give any event or span coordinates and watch your timeline unfold across geography, with campaigns, trade routes, and migrations traced where they actually happened.

Spreadsheet View

Flip the whole canvas into a sortable table to edit dates, rename entries, and bulk-fix details, then jump straight back to the timeline.

Fully Customizable

A marketplace for themes.

Recolor the entire app or set different themes for each timeline with 100+ community themes. One tap to install, one tap to enable.

Browse the marketplace
Parchment v2by sreegjl · light
Nebulaby sreegjl · dark
Lightby sreegjl · light
Darkby sreegjl · dark
Ancient GreeceEdited yesterday
Version History
Ancient Greece
  • Update 1 timeline (ryans-macbook)Timelines · 2 hours ago+3 elements
  • Update 1 timeline (ryans-desktop)Timelines · Yesterday+1 element, -1 element
  • Update 15 timelines (ryans-desktop)Timelines · Jul 21added

Restore any version as a copy. Nothing is overwritten.

How Git Sync works
Pick an item to see what it does
Sync and Publish

Sync freely.

Connect your library to a GitHub repo you own. Every device stays in step, every sync is a version you can restore, and any timeline in a public repo gets a link that opens in the browser with its images and notes intact.

FAQ

Questions, answered.

Is Timelines Studio free?

Yes. Timelines Studio is free and open-source under the GPL-3.0 license. There is no paid tier, no account, no ads, and no feature limit. Development is supported by optional donations.

Does Timelines Studio work offline?

Yes. The desktop app works offline and saves everything to your computer, with no account or sign-in. A few optional extras, such as Git Sync and the map tiles in Map View, need an internet connection.

Which platforms does Timelines Studio run on?

Windows 10 and 11, macOS 12 Monterey or later, and 64-bit Linux as an AppImage. The web viewer opens .timeline files in any modern browser for viewing. Download Timelines

Where is my data stored?

In plain files on your computer: each timeline is a .timeline JSON file, notes are Markdown files, and images sit in an assets folder. You can change these locations in settings, and nothing is uploaded to a server we run. How files work

Does Timelines Studio work with Obsidian?

Yes. Notes in Timelines are plain Markdown files, so you can point the notes folder at your Obsidian vault or link notes you already have to any event, span, or era. Your vault stays as it is, and Timelines keeps the timeline itself in its own .timeline file. How notes work

Can I share a timeline with other people?

Yes. Export a timeline as a PNG, a video, JSON, or a packaged .timeline file that bundles its images and notes. Anyone can open a .timeline file in the web viewer without installing anything. With Git Sync and a public GitHub repo, every synced timeline also gets a shareable link. Exporting guide

What time scales and dates does it support?

Anything from a few days to billions of years. Dates can be years, months, or full calendar dates, with era labels like BCE and circa markers for approximate dates. Writing dates

How is Timelines Studio different from Aeon Timeline or World Anvil?

Timelines Studio is free, open-source, and focused only on timelines, with your data kept as local files. Aeon Timeline is a paid desktop app, and World Anvil is a browser-based worldbuilding platform where timelines are one feature among many. See the full comparison

Is Timelines Studio ready to use?

It is in early alpha. It is usable today, but expect bugs, missing features, and occasional breaking changes, so keep backups of timelines you care about.

Open Source, Forever

Built in the open.

Timelines is GPL-3.0 licensed and free for everyone: no paid tier, no accounts, no ads. Donations help support ongoing development.

Free and open-source, always
100%Local-first, your notes stay on device

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