Here is a list of links to free plugins and samples.
When I’m making music, I try to use a maximum of free samples and plugins, together with FL Studio (All Plugins Edition).
That’s a free pack by Native Instruments containing 7 synthesizers, 9 sampled instruments (through Kontakt Player) and 2 effects.
You need to have/create a NI account to use them.
A great effect pack from dblue
It has Glitch, Crusher, Stretch and TapeStop.
A well-known multiband compressor in the EDM/Dubstep scene.
Hysteresis is a FREE glitch delay geared toward creating robotic artifacts and musical malfunctions.
Hysteresis is a versatile effects processor geared toward electronic musicians and sound designers. Process anything from drums to synths, guitars, vocals and sound effects. On top of being able to create contorted signal mutations, it can also be tamed to generate classic delay effects.
Fracture is a FREE buffer effect geared toward creating robotic artifacts and musical malfunctions.
Fracture is a versatile effects processor geared toward electronic musicians and sound designers. This plugin was designed to add glitchy articulations and abstract textures to your projects. Use it on anything from drums and percussion to synth lines and sound effects. Fracture’s intuitive interface and diverse features make it simple to give your projects a unique technical edge.
Another well-known effect, this time for compression and distortion.
Quite difficult to find since Camel Audio was bought by Apple.
Not necessarily stoned, but beautiful.
Freq Echo is perfect for dub, Dr. Who, and all of your psychedelic needs.
Bode-Style Frequency Shifter + Analog Echo Emulation create surprising sonic effects. Subtle chorusing and double tracking to barberpole phasing and flanging to endless glissandos and runaway echos.
Other free effects by ValhallaDSP:
A plugin useful for lo-fi sounds officially dubbed as “The ultimate lofi plug-in”.
You need to have/create an account.
Other free effects by iZotope:
I think Surge XT is the greatest open-source virtual instrument ever released.
It contains lot of features, you have to go to their website.
To me, it’s a great free alternative to the massive xfer Serum synth.
The free version contains 75 presets and 25 wavetables.
A lot of free samples.