Apps tagged with 'Second Brain'

All apps in Apps tagged with 'Second Brain' category. Use the filters below to narrow down your search. 
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  1. Tolaria icon
     36 likes

    Desktop app for large markdown knowledge bases, using plain files, Git versioning, YAML frontmatter, offline use, open source, and Claude Code AI integration.

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • IT flagItaly
    • European Union flagEU
    Tolaria screenshot 1
    Tolaria screenshot 1
    Tolaria screenshot 2
    47 alternatives
  2. OwnSpace icon
     3 likes

    Private, local-first knowledge storage for notes, documents, and projects. Offline access, Markdown support, fast search, and PARA organization method included.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Online
    OwnSpace screenshot 1
    OwnSpace screenshot 1
    OwnSpace screenshot 2
    14 alternatives
  3. Mnemosyne OS icon
     3 likes

    A control room for AI memory. Your files and conversations become searchable memory any model you connect can draw on, and you decide what enters, what moves and what leaves. Vaults live on your hardware.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Mac
    • Windows
    • Linux
    • US flagUnited States
    Your own memory, recalled with its reasons
    The control room dashboard, on an infinite canvas
    Neural Graph - Explore your memory
    +1
    Mnemosyne OS screenshot 3
    5 alternatives
  4. DANO icon
     1 like

    DANO is not another productivity app. It’s a digital mirror of your life — a single, connected space where everything you track lives together and nothing stays isolated.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Mac
    • Windows
    • Linux
    7 alternatives
  5. zk icon
     1 like

    zk is a plain text note-taking assistant meant for use alongside a separate text editor program.

    Cost / License

    Platforms

    • Mac
    • Linux
    zk screenshot 1
    27 alternatives
  6. Notes Plus icon
     1 like

    A macOS note editor that stores notes as local Markdown files in folders, with tags, priorities, attachments, Kanban boards, code, math and diagrams.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Mac
    • DE flagGermany
    • European Union flagEU
    Chemical notations (mhchem)
    Kanban / JIRA view, see your notes in vertical swimlanes, drag&drop them, sort, tag, prio them
    Support for ExcaliDraw
    +3
    Support for AsciiMath
    6 alternatives
  7. Dim0 icon
     2 likes

    An open-source AI canvas where you think and research visually - notes, diagrams, code, and an AI agent that builds directly on the board.

    Cost / License

    • Freemium
    • Open Source (MIT)

    Platforms

    • Online
    • FR flagFrance
    • European Union flagEU
    A Dim0 rich-text note explaining attention mechanisms, 
showing the scaled dot-product attention formula with 
math notation, numbered computation steps, and sections 
on Self-Attention vs Cross-Attention. ML mindmap visible 
in the background.
    Dim0's landing page hero section showing the tagline 
"Your canvas thinks back." with the subtitle "Research 
visually. Think spatially. Build with AI." and the 
handwritten line "Your thoughts deserve more than a chat 
window." Below is the AI agent input bar with an example 
prompt "Why do we dream, i..." powered by Claude Sonnet 4.5.
    A Dim0 canvas titled "Machine Learning Mindmap" showing 
an AI-generated mind map with a central node explaining 
Machine Learning, connected to five color-coded nodes: 
Key Concepts, Supervised Learning, Unsupervised Learning, 
Reinforcement Learning, and Common Applications. The agent 
panel shows 11 steps completed.
    +2
    A four-node horizontal flow diagram on a Dim0 canvas 
explaining DeepSeek's Visual Primitives: The Core Idea 
(green) ? The Old Way with Text CoT and its problems 
(pink) ? The New Way with direct spatial markers (orange) 
? Results showing smaller models matching GPT-5.4 and 
Claude Sonnet 4.6 (light orange).
    8 alternatives
  8. Minota icon
     1 like

    Minota turns WhatsApp into your everyday control center. Chat to save notes, photos, and links, manage reminders, track personal expenses, and store sensitive data in a secure vault.

    Cost / License

    • Paid
    • Proprietary

    Platforms

    • Online
    • WhatsApp
    Capture ideas, links, and notes instantly by chatting with Minota on WhatsApp, automatically organized in your personal dashboard.
    Manage your schedule, set reminders, and track routines effortlessly through WhatsApp, with seamless calendar organization.
    Track everyday expenses, income, and budgets simply by messaging Minota, backed by clear visual charts and category breakdowns.
    +1
    Securely store passwords, API keys, and sensitive data in an encrypted private vault directly via WhatsApp chat.
    17 alternatives
  9. Harbor is a private, cross-platform second brain for everything you want to keep for life: notes, scanned mail and documents, PDFs, receipts, web clips, photos, and meeting recordings.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Android
    • iPhone
    • iPad
    • Online
    • US flagUnited States
    Harbor Notes screenshot 1
    Harbor Notes screenshot 1
    Harbor Notes screenshot 2
    +1
    Harbor Notes screenshot 3
    9 alternatives
  10. BuddyPro icon
     Like

    BuddyPro is a platform where experts and coaches can build their own white-labelled relationship-based AI coach from their know-how and sell it to their audience as a $1-2K / year digital product. AI digital twins built on BuddyPro maintain up to 60% daily and 80% weekly active...

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Online
    • Software as a Service (SaaS)
    • GB flagUnited Kingdom
    AI digital twin from know-how
    6 alternatives
  11. An agent on its own computer, signed into your tools, with a wiki of everything your company knows. You text it work. It texts you when it's done.

    Cost / License

    • Paid
    • Proprietary

    Platforms

    • Online
    • Software as a Service (SaaS)
    • US flagUnited States
    Almanac Agent screenshot 1
    Almanac Agent screenshot 1
    Almanac Agent screenshot 2
    51 alternatives
  12. All-in-one life organizer combining journal, planner, notes, habits, and goals in one interconnected system. Mobile-first, offline-first, with optional E2E encryption.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Mac
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Online
    • EE flagEstonia
    • European Union flagEU
    Journal it! screenshot 1
    Journal it! screenshot 1
    Journal it! screenshot 2
    +15
    Journal it! screenshot 3
    54 alternatives
  13. Jurnily icon
     Like

    An intelligent journaling platform that uses AI and ancient philosophical wisdom to transform personal entries into actionable growth insights.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Online
    • Software as a Service (SaaS)
    • US flagUnited States
    Jurnily screenshot 1
    Jurnily screenshot 1
    Jurnily screenshot 2
    +1
    Jurnily screenshot 3
    56 alternatives
  14. Brainfo icon
     Like

    Brainfo is an all-in-one, AI-native second brain that brings Notes, Docs, Bookmarks, Databases, Tasks, and Goals together with a built-in multi-model AI Chat Hub — so you can capture, organize, write, plan, and execute in one place instead of juggling a notes app, a docs editor...

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Online
    • Software as a Service (SaaS)
    • CA flagCanada
    Brainfo screenshot 1
    Brainfo screenshot 1
    Brainfo screenshot 2
    +8
    Brainfo screenshot 3
    5 alternatives
  15. Record a thought by voice or type it. Seconds later it comes back to you titled, summarised, and broken into the things it actually contained: the observations you made, the tasks you committed to, the questions you left open, and the people and places you mentioned.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Online
    • PT flagPortugal
    • European Union flagEU
    Speak or type a thought and Pensatorium files it by what it's about — or you pick the folder yourself. Any date you mention becomes a scheduled action, shown here on the home screen. Connect your calendar once and they all appear in Google Calendar, Apple Calendar or Outlook too.
    The thought as it comes back: titled, filed, and still in your own words — with a reflection on it already waiting underneath.
    Underneath every thought: a reflection on what you were weighing, the tasks you committed to, and the dates you mentioned.
    +4
    Everything you mentioned a date for, gathered into one month. Open any entry to see the exact phrase that created it, its recurrence, and the thought it came from — and edit any of it.
    10 alternatives
  16. Altretta icon
     Like

    AI connects notes and code locally, cites every file and line. Works offline, supports 16 languages, real-time graphing, team privacy, and plugin extensions.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • EE flagEstonia
    • European Union flagEU
    A note open in the editor, with the vault index on the left and the inspector on the right: images, quotes and Japanese text inline, as plain Markdown on disk.
    Split view: the local graph of the open note beside the note itself, so the links around a passage are visible while you read it.
    The 3D graph groups notes into labelled layers — Art, Character, Film, Music, Studio — so clusters in a vault are something you see rather than something you infer.
    +1
    The home dashboard: recent notes, tasks due today, bookmarks, a saved query and your vault in numbers.
    26 alternatives
  17. Hjarni icon
     Like

    The knowledge base for ChatGPT and Claude. Save notes once, connect via MCP, stop re-explaining context every conversation.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Online
    • Software as a Service (SaaS)
    • BE flagBelgium
    • European Union flagEU
    Hjarni screenshot 1
    Hjarni screenshot 1
    Hjarni screenshot 2
    +4
    Hjarni screenshot 3
    19 alternatives