Tiddlywiki shine Wiki na sirri da kuma littafin rubutu mara layi don shirya da raba bayanan hadaddun. Aikace-open ne tushe guda ɗaya na shafi Wiki a cikin nau'in fayil ɗin HTML guda ɗaya wanda ya haɗa da CSS, Javascript, da abun ciki. An tsara shi don kasancewa da sauƙi don tsara da sake fasalin dangane da aikace-aikace. Yana sauƙaƙe sake amfani da abun ciki ta hanyar rarraba shi cikin kananan kaya da ake kira magunguna.

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.