K-Lite Codec Pack - K-Lite Codec Pack is a collection of codecs, DirectShow filters and tools.
SageThumbs - SageThumbs is a powerful shell extension allowing to preview enormous amount of image formats...
CCCP: Combined Community Codec Pack - The CCCP: Combined Community Codec Pack is a codec pack specifically built for playing videos (including mkv).
MysticThumbs - MysticThumbs generates thumbnails of many image types not natively supported by Windows.
AC3Filter - AC3Filter is a high quality free audio decoder and processor filter.
Icaros - Icaros is a collection of lightweight, high quality, Windows Shell Extensions