Self-hostable software: Diagramming Tools (33)

An open source virtual hand-drawn style whiteboard for creating diagrams and wireframes.

AFFiNE is an open-source, local-first workspace for writing, drawing, planning, and knowledge management, positioned as an alternative to Notion and Miro.

AFFiNE is an open-source, local-first workspace for writing, drawing, planning, and knowledge management, positioned as an alternative to Notion and Miro.

Penpot is an open-source, self-hostable design and prototype platform for teams building digital products.

A React SDK for building infinite canvas apps with customizable shapes, tools, and collaborative whiteboarding.

A free, open-source, cross-platform hierarchical note-taking application for building large personal knowledge bases.

Netron is a viewer for neural network, deep learning, and machine learning models.

An open-source platform for building AI agents and orchestrating agentic workflows with integrations, LLMs, and vector databases.

ChartDB is a web-based open-source database diagram editor that visualizes schemas, edits diagrams, and generates SQL/DDL exports.

Open-source collaborative wiki and documentation software.

FossFLOW is an open-source progressive web app for creating isometric diagrams in the browser.

Gollum is a git-based wiki system that lets users edit repository-backed pages in a web interface or with a local editor.