TiddlyWiki គឺជាវិគីភីឌាផ្ទាល់ខ្លួននិងសៀវភៅកត់ត្រាដែលមិនមែនជាលីនេអ៊ែរសម្រាប់រៀបចំនិងចែករំលែកព័ត៌មានស្មុគស្មាញ។ វាគឺជាកម្មវិធីទំព័រតែមួយដែលមានប្រភពបើកចំហរវីគីក្នុងទំរង់នៃឯកសារ HTML តែមួយដែលរួមបញ្ចូល CSS, JavaScript និងមាតិកា។ វាត្រូវបានរចនាឡើងដើម្បីងាយស្រួលក្នុងការប្តូរតាមបំណងនិងមានរាងឡើងវិញអាស្រ័យលើពាក្យសុំ។ វាជួយសម្រួលដល់ការប្រើប្រាស់មាតិកាឡើងវិញដោយបែងចែកវាទៅជាបំណែកតូចៗដែលគេហៅថា 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.