Castle Image Viewer vs tev: catalog facts
 Castle Image Viewer |  tev |
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Free Free and open source under the GPL. |
Free Free and open source under GPL-3.0. |
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Windows, macOS, Linux, Command line |
macOS, Linux |
- Reads texture formats like KTX and DDS that many viewers cannot
- Alpha bleeding for textures with transparency
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- Fast startup and loading of many images
- Accurate color management for HDR content
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- Editing is limited to a few specialised functions
- Interface is aimed at game developers rather than photographers
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- No published GitHub releases; install through package managers or build from source
- Specialised for HDR and color work rather than general photo browsing
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Downloadable app |
Downloadable app |
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Open source |
Open source |
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License: GPL-2.0-or-later |
License: GPL-3.0 |
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No account needed |
No account needed |
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Works offline |
Works offline |
Checked October 2, 2026 | Checked October 2, 2026 |
Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.
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