Few scripts for AviSynth+ (for full info read the scripts):

• AddBordersMod - due to MPEG-2 subsampling dirty lines / chroma bleeding could appear when AddBorders is used (more visible when the area is very saturared).
• AnimeMask - port of VapourSynth AnimeMask.
• AnimeMask2 - port of VapourSynth AnimeMask2.
• AutoResize_ - intelligent resize/crop to 1080p, 720p, SD (720px wide) or any custom resolution.
• band_det - banding detection.
• bborders - it fixes dirty lines on the borders.
• bbmodY - apply bbmod from random column and row.
• bt2390_pq - tone mapping based on BT.2390 (PQ).
• ChromaShiftSP2_ - high bit depth support.
• ChubbyRain2_ - high bit depth support.
• ComparisonGen - it takes images from two videos in order to compare them.
• debandmask_.
• dldet - helper function for finding black/dirty lines on the borders.
• Drawrect_ - additional color spaces support.
• f3kpf - f3kdb with a simple prefilter.
• FFMS2_ - additional parameters for better font styling.
• FixBrightnessProtect3 - it changes the brightness of column/row.
• Fixer - a wrapper of EdgeFixer.
• getnative - finds the native resolution(s) of upscaled material (mostly anime).
• GMSD - port of the VapourSynth GMSD.
• GradFun3DBmod - based on GradFun2DBmod but it uses GradFun3 and support 10..16-bit clips.
• HDR10_Content_Metadata - calculating MaxFall and MaxCLL of HDR10 video.
• HDR10_Content_Metadata_chunks - running HDR10_Content_Metadata in 4 chunks simultaneously.
• IQA_downsample - downsampler for image quality assessment model.
• lfdeband - f3kdb only on low frequencies.
• LWLInfo - script displaying LSMASHSource/FFMS2/D2VSource frame properties.
• MDSI - port of the VapourSynth MDSI.
• MCTD_ - see the changelog in the script.
• Offset_video_ - see the changelog in the script.
• rainbow_smooth2 - see the changelog in the script.
• retinex_edgemask.
• RoundHalfToEven.
• sc_stats_det - detection for red and blue scenes, and for scene exposure.
• solarCurve - function similar to Histogram(mode="luma").
• spline36resizemod_ - Spline36Resize for MPEG-2 chroma placement.
• SSIM_downsample - port of the VapourSynth SSIM_downsample.
• Tonemapper - script for tonemapping.
• vsSSIM - port of the VapourSynth SSIM.