Here is another bass plugin that is free but a step up from 4front bass that I suggested in another blog. You have more control of the sound with this free bass plugin as opposed to 4front bass. You can download it here. Click here to download
You can visit their website to read up on the plugin. Click here for more information
I have used their guitar vst Ample sound GT2 for a number of years and can attest to fact that their products are absolutely top notch.
I have a ton of information on VST's here
So download this free plugin and let me know what you think about it. Can't hurt to try it for free.
Please visit my website http://www.davidwaynerecording.com