Personal AI / PKM / lifelogging memory

Folder + tag hierarchy; iCloud sync. Writing Tools (proofread / rewrite / summarise) across all note content; audio transcription + AI summary; smart search; reminders from to-dos.

Hierarchical block-based documents + nested pages (no native graph). In-document AI assistant: summarise, rewrite, translate, Q&A over docs, proofread.

Windows-native screen-recording memory. Continuously indexes activity across apps, documents, browsing; timeline UI for revisiting work. Distinct from Copilot Memory.

Notion's first-party AI. Reads up to 50 pages per query (as of Jan 2026); Custom Instructions persist brand voice / team structure / preferences. Context follows you across model swaps. Notably not persistent cross-session learning — it …

Hierarchical outline + bidirectional links + spaced-repetition flashcards. AI auto-generates flashcards/quizzes from notes; AI summaries; fill-gap questions.

Tencent's knowledge-management productivity AI, powered by Hunyuan. Copilot mode adds a four-module persistent memory architecture: Soul (agent persona), User (profile), Memory (long-term declarative), Agent (learned skills/task experien…

Tags + bidirectional links + task/calendar integration. "Task Score" priority matrix. AmpleAI plugin supports OpenAI, Anthropic, Gemini, Grok, DeepSeek, Ollama.

Object-graph (people, books, projects as typed objects); daily notes; bidirectional links. AI chat grounded in current note; AI property auto-fill; in-editor writing assistant; pattern-finding across objects.

Visual whiteboard canvas + nested cards + bidirectional links + journal. AI chat with cited sources inside whiteboards; supports OpenAI / Gemini / Anthropic backends.

AI memory and research assistant. Resurfaces pages, highlights, and notes while browsing; saves context, recalls sources, generates summaries.

Open-source local-first outliner. Notes stored as Markdown / Org-mode on disk. AI integration via community plugins (e.g. logseq-ai for chatting with the graph). Graph view + backlinks; daily-journal-driven workflow.

Note-taking with no folders; AI-chat over notes. Focused on connections between notes rather than hierarchy.

No tags, no folders, no manual organisation. Automatic image tagging, OCR search inside screenshots/memes, smart auto-grouping (Smart Spaces), semantic search. Privacy-first.

Obsidian community plugin. Generates embeddings locally with a bundled model (TaylorAI/bge-micro-v2, 384-dim); chat with notes + see semantically related links. No API key required for local; supports 100+ cloud models optionally. Privac…

Personal AI product. Builds a personal language model from your captured memories, messages, and content; queryable as "your AI."

Networked-thought note app with AI features. Apple-ecosystem-native; backlinks + daily notes + AI synthesis.

Auto-tagged flat notes; semantic clusters (no folders). "Skai" personal AI surfaces related notes, semantic search, cross-tool integration (Drive, Slack, Calendar). ADHD-focused.

Infinite whiteboard + bidirectional-linked cards (spatial + networked hybrid). AI assistant for brainstorming, summarisation, rewriting selected cards.

Flat notecards + tags + collections; bidirectional references. AI tag recommendations, grammar suggestions, Vision (notecard editing assistant), Collection Creator.

Outliner + structured-data hybrid (Roam/Logseq + Notion-database influences). "Supertags" turn freeform nodes into queryable databases; Tana AI invokes on any node to summarise, generate action items, or extract structured fields (e.g. M…