Spek!

Adobe Audition software delivers the professional tools you need to make your video and audio productions sound their best. Handle a wide range of audio production tasks efficiently, including recording, mixing, and sound restoration.

Ocenaudio is a cross-platform, easy to use, fast and functional audio editor. It is the ideal software for people who need to edit and analyze audio files without complications. ocenaudio also has powerful features that will please more advanced users.

auCDtect Task Manager is a free GUI tool that lets you check if your lossless audio files were upconverted from a "lossy" file format.

Spectro is a freeware audio file analyzer for windows. Currently capable of reading FLAC, APE, MP3 and WAV files. Spectro lets you view vital data about compressed audio files and creates a spectrogram of the wave data. This allows you to quickly and easily spot quality issues with a file and also look for transcodes.

Podium is a modern digital audio workstation (DAW) for Windows. It supports recording and editing of audio and MIDI, and hosts VST instrument and effect plugins.

Lossless Audio Checker is a utility to check whether a FLAC or WAVE file is truly lossless or not, by detecting cutoff frequencies. It can show you the full frequency range for each file.

Audiochecker is a tiny and portable tool which analyzes the source of WAV, LPAC, SHN, APE and FLAC audio formats, in order to verify if the encoding is lossless. If not, it means that the files in question are converted from other formats with lower quality, such as MP3.

Detect the true quality of your audio files in one batch!

Tau Analyzer is a free program, which can help you to distinguish with reasonable accuracy the original studio-based CDs from poor quality fakes, that have been "reconstructed" using a lossy audio source, such as MP3. Using this program you can check the authenticity of your purchased or borrowed music CDs. Tau Analyzer features an intuitive user interface, allowing users to work directly with audio CDs, and has some additional functions such as a Spectrum and Frequency analyzers, ATIP and ISRC data readers, etc. »

sndpeek is just what it sounds (and looks) like:

S_TOOLS-STx provides tools for digitization of sound, single or multi (up to 128) channel signal recorder, 16/24 bit, sampling frequencies depending on audio hardware; analogue to digital transfer.