Astra Image 5.5.8.1 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The most popular versions among Astra Image users are 5.5, 5.2 and 4.0.
The most frequent installer filenames for the software are: ai3pro.exe, ai3si.exe, ai40.exe, AstraImage25MAX.exe and AstraImageWindows.exe etc. Astra Image works fine with 32-bit versions of Windows XP/Vista/7/8/10/11. This tool was originally designed by Phase Space Technology. Astra Image is included in Photo & Graphics Tools. We recommend checking the downloaded files with any free antivirus.
From the developer:
Astra Image is an advanced image processor that enables you to deblur, denoise and sharpen your images. Using the advanced Astra Image deconvolution tools, you can remove motion blur from your images. It can help you to correct out-of-focus images using deconvolution quickly and easily.
You may want to check out more software, such as Astra Image Pro, Apex Image Watermark or Image Components for WPF, which might be similar to Astra Image.