I've got fruity loops version (second only to the sexpress edition in cheapness) so I'll see what all I can use.
I'm pretty sure it's limited to full edition stuff, though.
So... if you can write everything and save it, and you aren't using external samples or plugins, then you're fine. External means you have to buy it separately or in one of the uber-packs, like Sytrus...
So here's a list of things I can use. This may or may not be exhaustive.
Layer
Audio clip/Sampler (as long as what you're sampling is rendered by you from these instruments, or is preset in FL)
TS404
Speech Synthesizer
3xOSC
Beepmap
Chrome
Dashboard
FL Keys
Slayer
FPC
Fruit Kick
Envelope controller
Granulizer
Keyboard controller,
Fruity Slicer
MIDI out (use this with fruity LSD (special effect) if you want to hear sound)
ReWired
Wave Traveller
Now for effects,
EQUO
7 band EQ
Center
Chorus
Compressor
dB meter
Delay
Delay 2
Delay Bank
fast Dist
Filter
Flanger
Flangus
Formula Controller
Free Filter
HTML NoteBook
Love Philter
Multiband Compressor
PanOMatic
Parametric EQ
Parametric EQ2
Peak controller
Phaser
Reeverb
Reeverb 2
Soft Clipper
Spectroman
Squeeze
Stereo Enhancer
Vocoder
WaveShaper
X-Y controller
So pretty much everything but Edison.
I'd list all the samples, but that would take a loong time...