Abstrakt Bass library requires NI Kontakt (not player version. I wonder if it can be imported to Ableton Live for example) - it offers 140 bass presets, that's about 1.6 GB Size.
it's a cool product [...] The problem is that we're updating some of our older products to keep things fresh, and this one is really, really hard to update. This is because each kontakt instrument was built individually, in the early days of scripting! So, to update it, we'd kind of have to start again from scratch. And we'd rather make new products than do that
More info: Sonic Couture Abstrakt Bass