Sure, Miro Miro is awesome.

But have you considered these open source alternatives?

They are free, self-hostable and community-driven.

Check by yourself: Excalidraw  Excalidraw , AFFiNE  Affine , diagrams.net  Draw.io , 🔄  Scrumlr .

  1. So is Excalidraw Excalidraw

    Whiteboard for sketching hand-drawn like diagrams

    ★ 88.3k diagram whiteboard License: MIT

    An open source virtual hand-drawn style whiteboard. Collaborative and end-to-end encrypted.

    preview

  2. So is AFFiNE Affine

    Collaborative workspace for your knowledge base

    ★ 44.1k knowledge-base note-taking collaboration whiteboard License: MIT

    This is the Community Edition of Affine.

  3. So is diagrams.net Draw.io

    JavaScript, client-side editor for general diagramming

    ★ 51.8k diagram License: Apache-2.0

    Browser-based diagramming components and applications.

    preview

  4. So is 🔄 Scrumlr

    Webapp for collaborative online retrospectives

    ★ 270 retrospective agile scrum License: MIT

    Scrumlr is an online collaboration tool that helps teams reach new heights. Start your first retrospective or collaborative session in an instant - no registration required and completely free and open source.

    preview