Omnisphere - Piano, pad and synth VST for DAW's.

Dexed - Dexed is a multi-platform, multi-format plugin synth that is closely modeled on the Yamaha DX7.

Serum - VST for FL Studio, Ableton Live, and many other VST supported DAWs. Heavily utilized in EDM.

Surge XT - Open-source subtractive-hybrid synthesizer formerly sold commercially as Vember Audio Surge.

Nexus 2 - Nexus 2 is a synthesizing tool that comes with easy navigation columns, categories, presets, color tags, bookmarks, and other features, which makes it an easy-to-use but powerful software.

Synth1 - Synth1 is a software synthesizer. Functionally it is modeled on the Clavia Nord Lead 2 Red Synth.