Open Source OmniGraffle Alternatives

    The best open source alternative to OmniGraffle is diagrams.net, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to OmniGraffle and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to OmniGraffle are Pencil Project (Free, Open Source), LibreOffice - Draw (Free, Open Source), Dia (Free, Open Source) and PlantUML (Free, Open Source).

    This page was last updated Sep 15, 2021

    1. diagrams.net (previously draw.io) is a free online diagram drawing application for workflow, BPM, org charts, UML, ER, network diagrams. No login or registration are required and features include the ability to save locally (including SVG), a range of stencils, .
      show more
      Most users think diagrams.net is a great alternative to OmniGraffle.
    2. Pencil is a standalone app or Firefox extension* that lets you create diagrams or UI mockups. It doesn't have collaboration/multi-user features.

      Discontinued

      It's Discontinued and no longer maintained.

      show more
      Most users think Pencil Project is a great alternative to OmniGraffle.


    3. Draw lets you produce anything from a quick sketch to a complex plan, and gives you the means to communicate with graphics and diagrams. With a maximum page size of 300cm by 300cm, Draw is a an excellent package for producing technical drawings, general posters, and much else.
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • PortableApps.com
      • FreeBSD
      • Xfce
      • DragonFly BSD
      • NetBSD
      • OpenBSD
      Dia is a GTK+ based diagram creation program for Linux, Unix, Mac OS X and Windows released under the GPL license.
      show more
    4. PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams. The generator can be run anywhere within JVM and integrated with various application such as wiki, text editor, IDE, programming language, documentation generator, and others.
      show more


    5. Penpot is the first Open Source design and prototyping platform meant for cross-domain teams. Non dependent on operating systems, Penpot is web based and works with open web standards (SVG). For all and empowered by the community.
      show more
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • Online
      Graphviz is open source graph visualization software. It has several main graph layout programs. It also has web and interactive graphical interfaces, and auxiliary tools, libraries, and language bindings.
      show more
    6. Gephi is an open-source software for visualizing and analyzing large networks graphs. Gephi uses a 3D render engine to display graphs in real-time and speed up the exploration.
      show more
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      Umbrello is a Unified Modelling Language (UML) modelling tool and code generator. It can create diagrams of software and other systems in the industry-standard UML format, and can also generate code from UML diagrams in a variety of programming languages.
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • BSD
      Xfig is an interactive drawing tool which runs under X Window System Version 11 Release 4 (X11R4) or later, on most UNIX-compatible platforms, and e.g. under Darwin on the MacIntosh and any X server under Microsoft Windows.
      show more
    Showing 10 of 21 alternatives