Tiddlywiki yog tus kheej wiki thiab cov phau ntawv uas tsis yog linear rau kev teeb tsa thiab sib qhia cov ntaub ntawv. Nws yog qhov qhib-qhov chaw ib nrab ntawm ib nplooj ntawv thov wiki nyob rau hauv daim ntawv ntawm ib html file uas suav nrog CSS, JavaScript, thiab cov ntsiab lus. Nws yog tsim kom yooj yim rau kev hloov kho thiab rov ua dua tshiab nyob ntawm daim ntawv thov. Nws txhawb nqa rov siv cov ntsiab lus los ntawm faib nws mus rau hauv cov ntawv me me hu ua tiddlers.

TiddlyWiki is designed for customization and to be shaped according to users’ specific needs, perhaps comparable to a high-end programming language. As such, it can be shaped into a wide and arbitrary range of special applications. Examples include niche note taking applications, to-do lists, presentations, collections, authoring tools, personal databases, recipe collections, etc.

Although there are many TiddlyWiki documents on the Web, the majority of TiddlyWikis reside on personal computers or in the cloud, or are exchanged over email, in a manner similar to word processing documents and spreadsheets. As a single HTML file, or saved as an HTA file in Microsoft Windows (allowing corporate IE lockdown to be bypassed), TiddlyWiki can be useful in corporate environments where red tape or IT resources might prevent the use of a wiki that requires a more complicated installation.