Sonic Atom is described as 'Multi-instrument, audio analysis and metering software for Post and Broadcast Engineers, Music Engineers, Video Editors, Sound Designers and Composers and everyone else that works with audio' and is an app in the Audio & Music category. There are more than 10 alternatives to Sonic Atom for Windows, Mac, Linux, iPhone and iPad. The best alternative is Sonic Visualiser, which is both free and Open Source. Other great apps like Sonic Atom are AudioTools (Paid), Spectralissime (Free Personal), sndpeek (Free, Open Source) and TrueRTA (Freemium).
sndpeek is just what it sounds (and looks) like: - real-time 3D animated display/playback - can use mic-input or wav/aiff/snd/raw/mat file (with playback) - time-domain waveform - FFT magnitude spectrum - 3D waterfall plot
TrueRTA's audio spectrum analyzer software shows you a detailed picture of what you're hearing in real-time, that is, as it happens. You can create your own professional measurement system starting with TrueRTA software on your PC.
iSpectrum is an easy to use audio spectrum analyzer that allows you to view live audio in a standard frequency plot, a stereo oscilloscope view and a waterfall display. You can adjust the display resolution, center frequency and save images to disk.
LoudLAB is an audio application designed to Monitoring & Control loudness levels. LoudLAB can be used to measure: Long-term, Short-term and Momentary loudness, LRA (Loudness Range) and True-Peaks (EBU R 128, ITU-R BS.1770) of Audio Files and Real-Time audio.
dpMeterXT2 is a professional loudness metering plugin and application fully compliant with the EBU R128-2014, ITU-R BS.1770-4, ATSC A/85 and several other region-specific loudness standards. dpMeterXT2 supports multiple channel configurations, from 1.0 up to 9.1/10.