ConceptDraw DIAGRAM AlternativesOnly Free apps categorised as Prototyping Tools

The best free Prototyping alternative to ConceptDraw DIAGRAM is Pencil Project, which is also Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to ConceptDraw DIAGRAM and three of them are free Prototyping Tools so hopefully you can find a suitable replacement. Other interesting free Prototyping Tool alternatives to ConceptDraw DIAGRAM are Lucidchart and Fluid UI.

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ConceptDraw DIAGRAM alternatives are mainly Mind Mapping Tools but may also be Diagram Editors or Prototyping Tools.  Filter by these or use the filter bar below if you want a narrower list of alternatives or looking for a specific functionality of ConceptDraw DIAGRAM.
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ConceptDraw DIAGRAM v14 is the only product that supports Visio legacy, runs on macOS and Windows, and is a perpetual license. Import/Export VDX, VSDX, VSSX and Import VSD, VSS files.

More about ConceptDraw DIAGRAM
ConceptDraw DIAGRAM alternatives page was last updated Sep 9, 2022
  1. Pencil Project icon
     412 likes

    Pencil is a standalone app that lets you create diagrams or UI mockups. It doesn't have collaboration/multi-user features.

    79 Pencil Project alternatives
    Pencil Project screenshot 1

    License model

    • FreeOpen Source

    Platforms

    • Mac
    • Windows
    • Linux
    • PortableApps.com

    Pencil Project Features

    1.  Prototyping
    2.  Sketching
    3.  Cliparts
    4.  Works Offline
    5.  Ad-free
    6.  Export to HTML
    7.  Export to SVG
    8.  Export to PDF
    9.  Export to PNG
    Discontinued

    It seems that this project is inactive. Since late 2023 there has been virtually no development in their GitHub repository.

    Pencil Project iconConceptDraw DIAGRAM Icon

    Pencil Project VS ConceptDraw DIAGRAM

    Is Pencil Project a good alternative to ConceptDraw DIAGRAM?
     
    • Pencil Project is the most popular Windows, Mac & Linux alternative to ConceptDraw DIAGRAM.

    • Pencil Project is the most popular Open Source & free alternative to ConceptDraw DIAGRAM.

    • Pencil Project is Free and Open SourceConceptDraw DIAGRAM is Paid and Proprietary
  2. Lucidchart icon
     534 likes

    Lucidchart is a cloud-based platform that promotes teamwork through diagramming, collaboration, and data visualization. It serves millions worldwide, offering flowcharts, UML, real-time collaboration, Visio support, and browser access. Designed for innovation and understanding, it integrates easily into work...

    47 Lucidchart alternatives
    Lucidchart Templates and Examples: With hundreds of template examples to choose from, you can start diagramming in no time.

    License model

    • FreemiumProprietary

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Software as a Service (SaaS)

    Top Lucidchart Features

    1.  Real time collaboration
    2.  Flow Chart
    3.  Web-Based
    4.  Export to PDF
    5.  General-purpose diagramming
    6.  Ad-free
    7.  Support for @mentions
    8.  Works Offline
    9.  AI-Powered
    10.  Charts
    11.  Scalable UI
    12.  Online collaboration
    Lucidchart iconConceptDraw DIAGRAM Icon

    Lucidchart VS ConceptDraw DIAGRAM

    Is Lucidchart a good alternative to ConceptDraw DIAGRAM?
     
    • Lucidchart is the most popular Android, iPhone, iPad, SaaS & Android Tablet alternative to ConceptDraw DIAGRAM.

    • Lucidchart is Freemium and ProprietaryConceptDraw DIAGRAM is Paid and Proprietary
  3. Fluid UI icon
     16 likes

    Fluid UI is the fastest mobile app prototyping tool available. Design and test your low and high fidelity app mockups on a mobile device with ease. Simple and UX oriented, this UI tool helps unlock creativity and will save your team time and money while gathering app...

    72 Fluid UI alternatives
    A screen flow export of the iPhone library

    License model

    • FreemiumProprietary

    Platforms

    • Online
    • Software as a Service (SaaS)

    Fluid UI Features

    1.  Real time collaboration
    2.  Live Preview
    3.  User Testing
    4.  Usability Testing
    5.  Website wireframing
    6.  Flow diagram visualisation
    7.  Export to PDF
    Fluid UI iconConceptDraw DIAGRAM Icon

    Fluid UI VS ConceptDraw DIAGRAM

    Is Fluid UI a good alternative to ConceptDraw DIAGRAM?
     
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