Capability
ScrozzFree · GPL-3.0 · Mac, Windows, Linux
Desktop support
CleanShot XmacOS only
ShareXWindows only
FlameshotmacOS, Windows, Linux
macOS, Windows, Linux
Free and open source
CleanShot X$29 · proprietary
ShareXFree · GPL-3.0
FlameshotFree · GPL-3.0
Free · GPL-3.0
Screen recording
CleanShot XMP4 and GIF
ShareXScreen and GIF recording
FlameshotNot documented
MP4 and GIF
Camera in recordings
CleanShot XYes
ShareXNot documented
FlameshotNot documented
Yes
Text recognition
CleanShot XOn-device
ShareXOCR
FlameshotNot documented
On-device
Pin to screen
CleanShot XYes
ShareXYes
FlameshotNot documented
Yes
Annotation
CleanShot XDeep editor
ShareXDeep editor
FlameshotFocused editor
Deep · secure redaction
Background and beautify
CleanShot XYes
ShareXImage beautifier
FlameshotNot documented
Yes
All-in-One capture picker
CleanShot XYes
ShareXNot documented
FlameshotNot documented
Yes
Upload destinations
CleanShot XCleanShot Cloud
ShareXMany built in · custom uploaders
FlameshotImgur
Your S3-compatible bucket
“Not documented” means it was not found in first-party sources. It does not mean impossible.
ShareX supports more uploaders.
Scrozz only supports S3-compatible storage you own. If you need many destinations or custom uploaders, ShareX wins.
Questions
Is there a free, open-source CleanShot X alternative for Windows and Linux?
Yes: Scrozz. CleanShot X says it is Mac-only, with no Windows version planned. Scrozz runs on all three under GPL-3.0.
Is CleanShot X open source?
No. It is paid and proprietary. Scrozz, ShareX, and Flameshot are GPL-3.0.
How is Scrozz different from ShareX?
ShareX goes much deeper on uploaders, but only runs on Windows. Scrozz keeps one workflow across Mac, Windows, and Linux.
What does Flameshot focus on?
Screenshot capture and annotation on all three desktops. Its feature list does not mention recording, OCR, pinning, or beautification.
Primary sources
All links are first-party.
Try Scrozz.
Free and open source for Mac, Windows, and Linux.