DeepSkyStacker Alternatives
DeepSkyStacker is described as 'Freeware for astrophotographers that simplifies all the pre-processing steps of deep sky pictures' and is an app. There are more than 10 alternatives to DeepSkyStacker for a variety of platforms, including Windows, Linux, Mac, Web-based and Flathub apps. The best DeepSkyStacker alternative is Siril, which is both free and Open Source. Other great apps like DeepSkyStacker are FITS Liberator, SAOImageDS9, PixInsight and Regim.
Alternatives list
FITS Liberator GUI image processing software has meant that it is even easier and faster to create color images using raw observations from a range of telescopes.
Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux


SAOImageDS9 is an astronomical imaging and data visualization application. DS9 supports FITS images and binary tables, multiple frame buffers, region manipulation, and many scale algorithms and colormaps.
Cost / License
- Free
- Open Source (GPL-3.0)
Platforms
- Mac
- Windows
- Linux


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- 7 PixInsight alternatives
PixInsight is an advanced image processing platform specialized in astrophotography and other technical imaging fields, constantly pushing the boundaries of astronomical image processing with the most powerful toolset available.
Cost / License
- Paid
- Proprietary
Platforms
- Linux
- Mac
- Windows

Starry Landscape Stacker makes it possible to produce landscape photographs taken at night that have both low noise and stars rendered as points.
Cost / License
- Paid
- Proprietary
Platforms
- Mac



Cost / License
- Free Personal
- Proprietary
Platforms
- Windows

Fitswork is a windows image processing program, mainly designed for astronomic purposes. It contains batch processing, histogram functions, many filters, etc. Fitswork works entirely in floating-point arithmetic.
Cost / License
- Free
- Proprietary
Platforms
- Windows

The Astro App is a tool for exploring the night sky and tracking celestial events. It's primarily targeted for amateur astrophotographers.
Cost / License
- Free
- Proprietary
Platforms
- Online


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Astroart is a software for image processing, image analysis, astrometry, photometry, camera and telescope control.
Cost / License
- Paid
- Proprietary
Platforms
- Windows


- 13 Qastrocam alternatives
Qastrocam is a capture program to do astrophotography. It can control a telescope to do guiding with the images received from a V4L device. It can also control the extended features of a webcam modified to do long exposure (several seconds) captures.
Cost / License
- Free
- Open Source
Platforms
- Linux
































Siril is the number one software alternative to DeepSkyStacker