.ext file: how to open it on Windows
4 Windows apps register the .ext extension. Install one of them to open the file with a double-click.
About the format
- Format
- Open Access III Document
- PRONOM identifier
- fmt/1889
Format data: freedesktop.org shared-mime-info and PRONOM (The National Archives, UK).
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7-Zip ZSFile archiver with support for Brotli, Fast-LZMA2, Lizard, LZ4, LZ5 and Zstandard
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7-Zip ZS Non DarkmodeFile archiver with support for Brotli, Fast-LZMA2, Lizard, LZ4, LZ5 and Zstandard
- 360 Zip
Free, security, high-speed compression software
- JT2Go
JT2Go Desktop App provides the richest feature set of all the supported platforms. The Desktop App will display not only .jt files but .vfz session files authored in the Siemens Digital Industries Software Flagship Teamcenter Visualization product.
Related guide: Change the default app for a file type in Windows