We did some searching for resources that are helpful for musicians and engineers. Here are five.

1. EQ you ears
This tool is great for improving your mixing ability. Do this a couple minutes a day to recognize certain frequencies faster.

2. drumbot
This sequencer is simple and not a bad way to make beats. You can export the wav files and then import them into your main DAW.

3. modulardgrid
The graphic interface looks great and it's fun to play with. You can also export the sounds. Sweet

4. autochords

alright so maybe it's not an ideal way to compose a song but it might not be bad for generating some of your own ideas

5. Thinking Inside The Box
This is a great article about EQ. Talks about mixing within a DAW and paints some interesting perspective.