StreamEye is described as 'Essential tools for video quality analysis and video compression optimization'. There are three alternatives to StreamEye for Windows, Linux and Mac. The best alternative is CodecVisa. It's not free, so if you're looking for a free alternative, you could try GitlHEVCAnalyzer.
CodecVisa is a powerful real-time analyzer for H.265/HEVC, H.264/AVC/MVC, GOOGLE VP9/VP8, MPEG2 Video and YUV video codecs. It can analyze H.265/HEVC, H.264/AVC/MVC, GOOGLE VP8/VP9, MPEG2 Video on different formats.
Parabola Explorer is a comprehensive bitstream analyzer for HEVC. It gives an unrivalled insight into inner codec workings via an intuitive user interface backed with powerful, multi-faceted analysis of video bitstreams.