There are 4 file types use the .TRX file extension:
- PASSOLO Translation List File
- Firmware Image File
- Visual Studio Test Results File
- WebAuthorize Batch File
1. PASSOLO Translation List File

- Developer SDL
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Popularity
- Category Settings Files
- Format Binary
Translation list created by PASSOLO, a program used for language translation of user interfaces; contains a collection of strings in multiple languages; used within a specific program to recognize key phrases and translate them from one language to another.
NOTE: Once TRX files have been exported, they are locked and cannot be modified again in PASSOLO.
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Updated: June 1, 2010
2. Firmware Image File

- Developer N/A
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Popularity
- Category Data Files
- Format Binary
Firmware image used by various embedded computer devices, including the Linksys WT54G router series; contains the firmware image contents as well as a header that provides the file length, a checksum, and the partition offsets within the file; used to recover or update the firmware on a device.
TRX files may also be provided in .BIN format, which typically is a vendor-specific version of a TRX file.
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Updated: January 12, 2010
3. Visual Studio Test Results File

- Developer Microsoft
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Popularity
- Category Developer Files
- Format XML
Test results file created by Visual Studio, a Microsoft application used to develop Windows software; contains test results stored in an XML format; used to display test results in Visual Studio as well as save historical test case results.
TRX files may also be created using Microsoft MSTest, a command-line utility that runs unit tests created in Visual Studio 2005 and later. The program executable file MSTest.exe has various command-line options that can be used to customize the output of tests.
NOTE: Test results remain in memory in Visual Studio until they are explicitly written to disk into a TRX file. They can be saved by using the "Export Test Run Results" option in Visual Studio.
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Updated: July 5, 2010