Unconventional digital modeling synthesizer released by HrastProgrammer. It comes with no presets but it has its own kind of sounds/textures.
Excellent Roland SH-101 emulation. TAL-BassLine is a plugin with a unique -18dB resonant filter, released by Togu Audio Line. It features an arpeggiator, LFO, MIDI automation and comes with 23 presets and a tutorial.
Trumpet instrument distributed on bigcat Instruments blog, available as plugin for Mac and PC.
Lethality is an electric guitar VST released Iridium Iris, suitable for alternative and rock genres, with open and muted power / octave / refused chords and open and muted single notes.
VR-08 is a free and close tR-808 emulation released by Alipapa, built around whopping 2134 samples.
KORG DL-50 (Korg Delta) freeware simulation, develope by Full Bucket Music. Great retro synth strings and fat bass synth tones. In addendum to the original machine, Nabla features a phaser, a delay and true polyphony.
SFZ sample player released by Plogue with a single instrument slot. It comes without effects.