Bass rider does the job of leveling your basslines without affecting it with compression. It balances it easily with only a few levers. You might want to consider if you want you bassline to stay consistant in volume as this plug-in does that. Also if you would like you can make subtle changes in volume or at whatever change in volume you'd like to affect it at within it's ability.
It's great for dramatically or subtely changing your volume level on the basslines it's applied to.