Reaktor synths work cross platform 
DERP! Duh. Thanks! My reading failed.
theres a good synth made just for that available for free here http://teglegrecords.free.fr/
find it on the FreeStuff page 
its called DogStepper
theres a few 8bit glitchy stand alone synths and sample ganarators also free
layer that shit.
Has anyone mentioned the itchy synths thus far?
http://www.dubstepforum.com/free-synths-itchy-synths-vst-t90924.html
Seriously though, you can achieve a decent wobble bass with a simple square wave, a bandpass filter with a strong negative envelope, Lfoâd to the 1/4 (automate changes in sync rate). Stereo spread can help with the fatness, unison, multiple instances etc.
EDIT: Lfo is for the cutoff frequency sorryâŚ
It should go FHWhomP! (negative env) WhuaaaâŚ(sustain) Whub whub whub whub whub⌠(always include sound bytes of desired effects)
Unfortunately I havenât gotten far enough into renoise to do this with native tools yet (dunno where the option for inverted filter envelope is) but itâs definitely do-able out of the box. (I mean download)
By the way, these are ridiculous 
. Thanks for the heads up!
Itâs no secret what DAW Skream uses thoughâŚ
Fruity Loops
[sub]at least, thats what he told me[/sub]
editz0r
http://www.lo-la.co.uk/2006/12/28/skream-unedited-interview/
@ coopr: could you post the xrns of your example [âreally simple stuff (with some not so nice drums)â]? what your doing there is exactly what i want to achieve and without usung vsts tooâŚnice!! pleeeaaaase!!! 
some one mentioned earlier, using bandpass filters instead of LPFs for wobble, this actually sounds better!
but my extra tip would be, to highpass filter that wobble on the end of the effects-chain, and add a sub sinewave along side it - obviously using the same notes. itâs a little time consuming but well worth it! then maybe send both the sub + wobble(s) to a bus channel and compress it. 
Depends totally and utterly on the bassâ high end. If it reaches beyond 2KHz, it could work better, depending on what sound youâre after. But Iâd not compress sub and wobble together, let them both speak for themselves. To quickly layer something with sub:
- Duplicate track, inl. patterns
- Advanced pattern editor: track in song, replace wobble-instrument with sub-instrument
- Replace wobble on filter with wobble on gain
Interesting topic,
Iâm brand spanking new to renoise and would love a peek at the renoise set you used for the dubstep demo you postedâŚ
but the link for the set is dead
anyone still have it ?
Cheers
I just listened back to it and didnât really like it.
Hereâs a different example: http://drop.io/zdyifna/asset/example-xrns
Try using the native oscilators like so Filthy dirty angry native bass
All credit due to TiiVi for the first part of this .xrns
Working with the ringmod frequencies is not a real choice atm, because the calculated key frequencies are not accurate. Combine it with an accurate tuned VST on your toenails will curl upâŚ
You could always use the keytrack device and empty instrument to set maxima and minima freq values! Itâs accurate if you clamp to A
Itâs a lot of effort I know, but thatâs what effects chains are for.
I work on linux so Iâve been putting alot into just using native FX.
Well, for Windows it isnât accurate (yet). SadlyâŚ
wobble bass ⌠eh
lfoâing the filter on a bass. achieving faster wobble with higher pitch and bla.
use synced lfo and automation âŚ
iâve posted a tutorial once, step lfoâing in renoise. you can achieve
wobble speed synced to notes with this method.
@ coopr: thanks 4 posting the dubstep wobble example! much appreciated.