KnowledgeBase Builder Lite

InfoRapid

About this app

The infinite mind map: millions of connected ideas

Conventional mind mapping apps hit their limits at 50 to 100 nodes and force you into a rigid tree structure. The InfoRapid KnowledgeBase Builder is a true knowledge network for personal knowledge management and your digital “second brain”: any node can be linked to any other and every relationship carries its own label.

★ What the Lite edition does
Lite includes every feature of the full version – no time limit, no ads. The only difference: you work with exactly one knowledge base. It holds millions of items; only the full version manages several database files side by side.

★ Spectacular 3D view
Experience your knowledge in space: the interactive 3D view arranges your network in a planetarium layout. Fly from node to node with animated camera moves, or let presentation mode carry you through a guided tour.

★ Whiteboard, mind map & kanban in one app
Start out free-form in whiteboard mode: ideas, notes and tasks float loosely on an infinite canvas. Later on, arrange them as a classic mind map – or as a kanban and scrum board for projects and tasks.

★ Every kind of diagram, tidied up automatically
Connect nodes by drag and drop, then label and weight every relationship. One click sorts the whole network radially, symmetrically, hierarchically or as a table. That is how mind maps, concept maps, flowcharts, org charts, family trees and even mathematical formulas (LaTeX) come together.

★ Notes, rich text & attachments
Every node holds far more than a title: formatted notes, tables, checklists and cross-references. Attach PDFs, Word and Excel files, images or web links directly – with previews.

★ Full-text search that reaches into your documents
The lightning-fast search covers not only the titles of your nodes, but the text content of every attached document.

★ Wikipedia, Wikidata & Obsidian import
Search Wikipedia or Wikidata straight from the app and import entire articles along with their semantic relations as a finished mind map. From your own text, the analysis extracts keywords for brainstorming. Obsidian vaults can be imported too.

★ AI support for automatic diagrams
Let modern AI models expand your diagrams, summarize text or insert entire structures – thanks to full support for the Model Context Protocol (MCP).

★ Categories, tags & live filters
Group nodes by color and topic, and instantly hide the branches you do not need right now.

★ Open formats
Export and import your knowledge network or sub-branches as JSON, XML, CSV, text document, image or 3D model.

Also included:

• Flashcard trainer: the app automatically generates flashcards and cloze tests from your mind maps for studying at school and university (spaced repetition).


• Flowcharts from pseudocode: write simple logic text and the app draws the flowchart.


• History that lasts: up to 200 undo steps – even after restarting the app.


• Your data stays local: your knowledge base is stored as a fast SQLite file (.kdb) on your device instead of in someone else's cloud. No account, no forced cloud, no tracking. You only need the internet for the optional Wikipedia/Wikidata import and for AI support.


• On all your devices: share your .kdb file through the cloud storage of your choice with the editions for Windows, iOS, macOS and the browser.


• Made for trying it out: no time limit, no ads, no subscription. To keep several knowledge bases side by side, move up to the full version “InfoRapid KnowledgeBase Builder” – your .kdb file comes with you.

More information and sample databases: https://inforapid.org/

Ratings and reviews

Within a few minutes I bought the paid version out of sheer gratitude. This is the best app in its category that I've found in months. I spent 8 hours today reading about data visualization, relational modeling, etc, and looking for the best software to map cognitive processes and personal goals. This blows much larger developers' products out of the water! Absolutely superb. I particularly appreciate the ability to categorize relationships. Thank you so much!

I believe this is my first five star ever. Beautiful and intuitive. Easy to use and flows so well. Would like a different color scheme for the gui. A darker scheme for those with vision issues. I may update later on but i don't foresee it. It has a nostalgic feel when building like from the 90s bulletin board days. This is free? A gift! Thank you.

Really excellent app. I don't know what's free and what premium would be like, but simply graphing tons of data into 3-D structures, charts, whatever your thing is, is easy and seamless. Switching views or type of visual grouping is instant and you can even link urls or Wikipedia entries for swift research or presentation. I've only made one very detailed data map thus far but quite impressed. No nonsense. Does what it say it do 👍🛸

What’s new

• New: Comprehensive AI integration via Model Context Protocol (MCP) – Introduced a new local MCP server and an MCP bridge with secure file-based communication.
• UI Update: Text bubbles are now used for clearer illustrations during AI interactions in Screenplay and MCP modes.
• Improved: Additional updates feature Kanban board optimizations (drag & drop animations, immediate tag saving), new whiteboard tools.