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TiddlyWiki

Personal wiki software.

What it is

TiddlyWiki is a non-linear personal wiki that lives in a single HTML file. Each note is a small 'tiddler', and tiddlers can be linked, tagged and transcluded to build a personal knowledge base that works offline in any browser. Because the whole wiki is one file, it can be stored anywhere — synced, emailed, put on a USB stick — or served on the web. A plugin ecosystem adds search, task lists and other extensions, and it is free and open source.

TiddlyWiki pricing

TiddlyWiki does not publish a plan ladder we could verify. Pricing not verified.

Prices read from the vendor's own pricing page on 2026-09-03. Vendors change plans without notice — check the source before you budget. Price verification log.

Key features

  • Single-file wiki

    The entire wiki is one portable HTML file that works offline.

  • Tiddlers

    Small linked, tagged and transcludable notes instead of long pages.

  • Plugins

    Add search, task lists, calendars and other extensions.

  • Host it anywhere

    Serve it on the web, sync it or carry it on a USB stick.

Strengths and trade-offs

What works well

  • Entire wiki is one portable file
  • No server or account needed
  • Highly customisable

Where it falls short

  • Setup and sync require effort
  • Concepts are unusual at first
  • Not built for collaboration

Who it is for

People who want a personal knowledge base with no dependencies at all.

Our verdict

Remarkable engineering and genuinely yours forever. The learning curve is the price.

Frequently asked questions

Can TiddlyWiki be used by a team?
It is designed as a single-writer tool. Multi-user use means hosting a server-based edition, which trades away the simplicity of the single file.
Where does TiddlyWiki save data?
In the single HTML file itself. Saving takes either the browser's download flow or one of the saver plugins that write to a server or storage service.
Who is TiddlyWiki best for?
People who want a personal knowledge base with no dependencies at all.
What are the main drawbacks of TiddlyWiki?
The trade-offs we noted: Setup and sync require effort; Concepts are unusual at first; Not built for collaboration.

What we checked

  • Public APIOffers a documented API you can build against.Yes
  • Mobile appHas a native app for iOS or Android, not just a mobile website.Yes
  • Open source / self-hostableSource is open and the tool can be run on your own infrastructure.Yes
  • SSO (SAML)Supports SAML single sign-on on at least one plan.Yes

“Not checked” means exactly that — we have not verified it, and we do not guess.

Evidence and freshness

Status: Source listed, figures not recordedReviewed: 2026-09-03

Limit: Automated check: the vendor page states the software is open source and free to use. An editor has not read it line by line. Covers the open-source edition only; the same vendor may sell a paid cloud or enterprise tier.

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Work at TiddlyWiki? Embed the verified-pricing badge

We read this pricing from TiddlyWiki’s own pricing page on 2026-09-03. The badge says that and nothing more: no rating, no payment. How the badge works

TiddlyWiki pricing verified by ToolCompare

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