Tiddlywiki waa qof shaqsiyeed wiki iyo buugaag xusuus ah oo aan toos ahayn oo loogu talagalay abaabulka iyo wadaagista macluumaadka adag. Waa codsi cod ah oo ah Cod-bixiye Bog-bog ah oo ah qaab hal fayl ah oo HTML ah oo ay ku jiraan CSS, javascript, iyo waxa ku jira. Waxaa loogu talagalay in ay fududaato in la habeeyo laguna qaabeeyo iyada oo ku xidhan arjiga. Waxay fududeysaa dib-u-isticmaalida waxyaabaha ku jira iyada oo loo qaybiyo qaybo yaryar oo loo yaqaan 'Toddlers'.

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.