.cs1 file: how to open it on Windows
16 Windows apps register the .cs1 extension. Install one of them to open the file with a double-click.
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darktablePhotography workflow application and raw developer
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XnView MPProfessional Image Viewer & Photo Management
- GIMP
GIMP is an acronym for GNU Image Manipulation Program. It is a freely distributed program for such tasks as photo retouching, image composition and image authoring.
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SageThumbsA powerful shell extension allowing to preview enormous amount of image formats directly in Windows Explorer.
- ACDSee Free
ACDSee Free is a fast and powerful file browser, ideal for viewing RAW images, as well as searching and sorting your media libraries.
- PicPick
All-in-one design tool for everyone
- ACDSee Photo Studio Ultimate 2026
Navigate Your Creative Path and Digital Assets with AI-Powered Precision
- ACDSee Photo Studio Home 2026
ACDSee Photo Studio Home 2026 equips you with the tools to master your extensive photo collection.
- ACDSee Photo Studio Professional 2026
ACDSee Photo Studio Professional supplies you with a resourceful toolkit that blends cutting-edge, locally powered Artificial Intelligence (AI) with legendary digital asset management and sophisticated RAW image editing.
- XnView
Best Photo Viewer, Image Resizer & Batch Converter for Windows.
- ACDSee Gemstone Photo Editor 15
ACDSee Gemstone Photo Editor 15 is your launchpad for limitless creativity, built to fuel every graphic design and photo editing journey. Engineered for both precision and ease, Gemstone gives you the freedom to explore new creative frontiers.
- FastPictureViewer Professional
A fast raw image viewer designed for digital photographers
- Movavi Photo Editor
Create awesome photos easily
- Movavi Picverse
Quickly edit and manage images
- PicPick
All-in-one design tool for everyone
- QQ影像
QQ Image is a desktop image processing software launched by Tencent. With its refreshing interface and simple operation, it provides you with a one-stop image processing experience.
Related guide: Change the default app for a file type in Windows