Pcheneg Tremolo is a free tremolo effect with the possibility to adjust the modulating curve shape and a host synchronized frequency.
Gravel from Taiga DSP, a freeware bitcrusher/distortion effect with a built-in envelope follower, available as a 32-bit and 64-bit VST plugin for Windows based machines.
RETRO BEAT MK2 is a module which combines 27 vintage beatboxes and drums synth sound. On the menu: Roland, Mxr, Vermona, Hohner, LinnDrum, mattel, simmons, boss, korg, wersimatic, hammond, boehm, mfb, polyvox, casio, electro harmonix, etc. Every sound has been treated through analog peripherals worthy of the name: Preamp Cartec Audio, Eq Chandler Limited, compressor Shadow Hills. Note that Retro Beat Mk2 is usable in multi-out.
Filterjam is a free (Registration) multi-band resonant filter delivering weird ringmod-like filtered sounds. The input signal is divided into 4 bands that are then summed or multiplied together according to the selected mode. Filterjam can be very harsh or gentle, it can add brightness or depth to synth sounds, but it can also completely mangle acoustic sources.
3 free game console synthesis plugins. Emulations of some of the most iconic chips including the Ricoh A203 (Nintendo), PAPU (Gameboy), MOS Technology SID (Commodore 64, 128 & MAX) and TI SN76489 (Sega, BBC etc).
TAL-Tube is a free saturation plugin that have the characteristic of tubes and an additional amplifier mode. It’s very suitable for adding higher harmonics and can give more excitement and analog character to digital sounds or drums. At extreme values it can also be used as a grungy distortion effect.