Knogra

Knogra is a browser-based knowledge graph explorer that splits large maps into animated scenes, offers a topology-aware AI assistant using your own API key, and stores everything locally as plain JSON with no account.

Knogra is a knowledge graph explorer aimed at visual learners, researchers and anyone who wants to map a whole subject instead of filing it into folders. It supports several map styles in one workspace: free-form mind maps, concept maps with labeled relationships, semantic networks, nested mind maps where any node opens into its own map, memory palaces, and equation collections written in LaTeX. The central idea is the scene. A large graph is split into focused views, each scoped to what matters at that moment, while all of them draw from one connected graph. Moving between scenes is animated, so shared ideas drift to new positions instead of the screen jumping, which is meant to help the brain tie a concept to where it sat. Nodes are shapeable visual objects that can hold rendered equations or SVG illustrations, with more than 20 presets to begin from. An AI assistant reads both the nodes and the connections. Each concept keeps its own conversation on the node, so only the context that concept needs is carried along. Asked to grow a map, the assistant proposes nodes and links that may have been missed. Learning aids include saved paths through the scenes for revision or guided tours, and a quiz mode that hides a share of the nodes to test recall. Mermaid diagrams inside Markdown files can be imported as navigable drill-down scenes, and graphs export back out. Data handling is local. Graphs live in the browser using IndexedDB, work offline, and save as plain JSON. There is no account or server, and the AI features use a key the user supplies, with calls going straight to the chosen provider. The site is designed for desktop use. A public library of hand-built graphs, including quantum mechanics, calculus, chess openings and the Odyssey, can be opened and edited. Compared with Mermaid or typical mind-map apps, Knogra trades quick diagramming for depth and navigation across large subjects.