Best Self-hosted Whiteboards, Diagrams & Mind Maps tools in 2026

Excalidraw is an open-source collaborative whiteboard for sketching hand-drawn style diagrams, wireframes, and flowcharts with real-time sharing.

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Excalidraw++15

Penpot is an open-source UI design and prototyping platform with real-time collaboration, design systems support, and developer-friendly inspect mode with CSS/SVG/HTML ou...

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Figma+6

Logseq is a privacy-first, open-source knowledge management app for networked notes, tasks, and collaboration using local Markdown or Org-mode graphs.

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Roam Research+19

Open-source, web-based ERD and database schema diagram editor. Import schemas via a single query, edit visually, and export DDL scripts and images for documentation or mi...

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DrawSQL+6

Browser and desktop diagram editor for flowcharts, UML, wireframes and network diagrams with cloud storage integrations and offline apps.

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Microsoft Visio+16

WBO is a lightweight, real-time collaborative whiteboard where multiple users can draw simultaneously, with persistent boards and optional JWT-based access control.

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Microsoft Whiteboard+8

Web-based virtual tabletop for TTRPGs offering infinite canvas, layers, dynamic lighting, player vision, initiative tracking, offline support and self-hosting.

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Foundry Virtual Tabletop+2

Real-time collaborative mind-mapping web app with import/export, sharing via links/QR, undo/redo and Postgres storage. Runs with a TypeScript/NestJS backend and Angular f...

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Xmind+8

Sticky is a digital sticky-note board for organizing ideas, collaborating in real time, and syncing across devices with customizable notes and drag-and-drop layout.

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Microsoft Whiteboard+9