What are some alternatives?
When comparing Sound Level Meter and LMMS, you can also consider the following products
AudioTool - Whether you want to make music for the club, or you're aiming to put a few tracks to a film, Audiotool is a website geared towards putting the mixes at your fingertips. Read more about AudioTool.
Reaper - Reaper is a focused digital audio workstation (DAW) developed by Cockos. In the creation of the software, the digital audio technology company intended to make audio editing accessible to the masses.
Sound Meter - Professional sound level meter in your pocket! Features: ------- ¦ direct reading in dB
Ardour - Record, edit, and mix on Linux, Mac OS X, and Windows.
Digital Level Meter - Display sound level
Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.