.cml file: how to open it on Windows

20 Windows apps register the .cml extension. Install one of them to open the file with a double-click.

About the format

Format

Chemical Markup Language

PRONOM identifier

fmt/333

Format data: freedesktop.org shared-mime-info and PRONOM (The National Archives, UK).

• A
  Altova MissionKit 2026 Enterprise Edition

  Suite of XML, JSON, and SQL tools including XMLSpy & MapForce

  Proprietary 2026.02.00.01
• A
  Altova MissionKit 2026 Professional Edition

  Suite of XML, JSON, and SQL tools including XMLSpy & MapForce

  Proprietary 2026.02.00.01
• A
  Altova Authentic 2026 Enterprise Edition

  XML content authoring tool and document editor for non-technical users

  Proprietary 2026.02.00.01
• A
  Altova XMLSpy 2026 Enterprise Edition

  JSON and XML Editor

  Proprietary 2026.02.00
• A
  Altova XMLSpy 2026 Professional Edition

  JSON and XML Editor

  Proprietary 2026.02.00
• A
  Altova Authentic 2025 Enterprise Edition

  XML content authoring tool and document editor for non-technical users

  Proprietary 2025.02.00.01
• A
  Altova MissionKit 2025 Enterprise Edition

  Suite of XML, JSON, and SQL tools including XMLSpy & MapForce

  Proprietary 2025.02.00.07
• A
  Altova MissionKit 2025 Professional Edition

  Suite of XML, JSON, and SQL tools including XMLSpy & MapForce

  Proprietary 2025.02.00.07
• A
  Altova XMLSpy 2025 Enterprise Edition

  JSON and XML Editor

  Proprietary 2025.02.00.07
• A
  Altova XMLSpy 2025 Professional Edition

  JSON and XML Editor

  Proprietary 2025.02.00.07
• A
  Altova Authentic 2023 Enterprise Edition

  XML content authoring tool and document editor for non-technical users

  Proprietary 2023.02.00.04
• A
  Altova Authentic 2024 Enterprise Edition

  XML content authoring tool and document editor for non-technical users

  Proprietary 2024.02.01
• A
  Altova MissionKit 2023 Enterprise Edition

  Suite of XML, JSON, and SQL tools including XMLSpy & MapForce

  Proprietary 2023.02.00.05
• A
  Altova MissionKit 2023 Professional Edition

  Suite of XML, JSON, and SQL tools including XMLSpy & MapForce

  Proprietary 2023.02.00.05
• A
  Altova MissionKit 2024 Enterprise Edition

  Suite of XML, JSON, and SQL tools including XMLSpy & MapForce

  Proprietary 2024.02.01
• A
  Altova MissionKit 2024 Professional Edition

  Suite of XML, JSON, and SQL tools including XMLSpy & MapForce

  Proprietary 2024.02.01
• A
  Altova XMLSpy 2023 Enterprise Edition

  JSON and XML Editor

  Proprietary 2023.02.00.04
• A
  Altova XMLSpy 2023 Professional Edition

  JSON and XML Editor

  Proprietary 2023.02.00.04
• A
  Altova XMLSpy 2024 Enterprise Edition

  JSON and XML Editor

  Proprietary 2024.02.01
• A
  Altova XMLSpy 2024 Professional Edition

  JSON and XML Editor

  Proprietary 2024.02.01

Related guide: Change the default app for a file type in Windows