An open standardized format of the multimedia container type. Ogg is in the public domain and has no patent and license restrictions. Allows for playing and editing high-quality digital multimedia files. This format is not supported by devices powered by any Apple platform. An Ogg file can contain audio information and metadata. After compression, you can get files of different quality: medium or high. The compression process entails minimal loss.

WavPack: a free lossless audio codec

This format is completely open. WavPack allows for both lossy and lossless compression. After compression, there is created a small file that can be played separately. WavPack also contains a correction file, which allows you to restore the original version. Supported only by certain audio players. This format has high sampling frequencies (192 kHz) and can be multi-channel (up to 255). It is easily converted to the mp3 format.