Applications that aid in the creation, maintenance and usage of a [[Personal knowledge base|personal knowledge base]]. Qualities of a personal knowledge management system (PKMS) can include: - **Bi-directional linking** ([[Zettlekasten|zettlekasten]]) (eg. [[Obsidian]], [[Roam research]]) - **Graph view** (eg. [[Obsidian]]) - **Data ownership** - **Local-first** (eg. [[Logseq]]) - **Cloud-first** (eg. [[Notion]]) - **Structure of storage** - **Document** (eg. [[Obsidian]]) - **Outliners** (eg. [[Logseq]]) - **Database** (eg. [[Notion]], [[Anki]]) - **Extensibility** (eg. [[Obsidian]] vs Apple notes) - **[[Spaced repetition]]** (eg. [[Anki]], [[Supermemo]]) - **Open-source / closed-source** - **Capture** **& Processing** (eg. [[Obsidian]] web clipper & [[Supermemo]] [[Wiki/cards/Incremental reading|incremental reading]]) - **Portability** (eg. markdown files vs proprietary structure) - **Multimodal support** (eg. handwriting in [[Goodnotes]]) - **Cross-device smoothness** (eg. apple notes) - **Collaboration** (eg. google docs) - **Publishing** ([[Digital garden|digital garden]]) (eg. [[Notion]] pages, [[Obsidian]] publish) - **Task management** (eg. ticktick) - **Versioning/history** - **Search & retrieval** - **Deep semantic connections** (eg. [[Xanadu]])