Soundly

Great essential tool, 10 bands, solo mode, spectrum analyzer.

There is cramping, but no complaints about the free tool.

A really easy to use mix-checking plugin for making sure your songs sound okay coming from e.g. a car radio. The presets are very helpful, I just wish it had a studio monitors simulation and some different headphone models.

Soundly is a great tool for searching around for sounds to add to your DAW project. Not only that but there is also the voice designer tool where you can create text to speech with a selection of eerily realistic voices. However, with the free plan, there is a limit of 25 voices renders. The problem with that is whenever you preview a voice (to hear what it sounds like) each preview counts towards the 25 limit. So be careful when using the voice designer on the free plan.