AI diagram generator for software architecture - the open-source Eraser.io alternative. Describe your system in plain English, get editable system design, sequence, ERD & cloud diagrams on an Excalidraw canvas. Self-hostable, bring your own key. Vibe diagramming for engineers.
Overarch provides a knowledge graph for IT architecture on various levels for human and AI consumtion, opening various use cases on the model data. Supports artifact generation (e.g. code, docs and diagrams).
Local-first, MCP-native tool for modelling software architecture. C4-style semantic model, React Flow editor, SQLite, single container — a self-hosted Structurizr alternative your AI client can edit over MCP.