Downloading AviSynth 2.6.0.6 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. AviSynth is included in Multimedia Tools.
This PC program is suitable for 32-bit versions of Windows XP/XP Professional/Vista/7/8/10/11. This free tool was originally produced by Ben Rudiak-Gould.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The most popular versions among the program users are 2.6 and 2.5. The program's installer is commonly called avi.exe, AVSGenie.exe, AVSInfoTool.exe, AvsP.exe or AvsPmod.exe etc.
From the developer:
AviSynth is a tool for video post-production, it works as a frameserver, providing instant editing without the need for temporary files. This program doesn’t have an interface on its own, and works using a scripting language. Since text-based scripts are human readable, projects are inherently self-documenting.
You may want to check out more software, such as AviSynth+, AVISynth UI or Pantarheon 3D AviSynth Toolbox, which might be similar to AviSynth.