Odin is very good sounding and open source synth. Its not well known as Surge but it sounds way more warm. It can produce classic analog sounds and has lot of filters which works very well, this is its strongest point.
It has built in amp distortion, delay, phaser, chorus, flanger reverb. It supports 11 Oscillator types and 13 filters, 4 LFO and 4 Envelopes. It needs more envelopes because lot of things can be modulated, more LFO would not hurt but I do not use LFOs so much. It can be called "free Diva".
Weakest part is ARP. Most synth authors are simply unwilling to make proper ARP. This ARP has 16 steps only and you can't set gate and velocity to each step. Just very few synths (Viper, Omnisphere) implements proper ARP with at least 32 steps.
Wake up guys Korg Triton in 90's had 48 steps polyphonic ARP which can do not just basic notes but also note number in chord played and velocity/gate to each step. In dance music we use 1/16 steps - 16 step ARP can play just one bar - not enough for making riff.
Would I use it as my workhorse synth every day? No. Without more envelopes and proper ARP is worthless for me but if you are just starting and do not have these $200 synths yet then its must have.
Great sounding and versatile synth. Indeed one of the best freeware synths out there! One of those synths that you want to tweak and see and hear, what is possible and not one of those rather uninspiring synths or incarnations of what's already been done a dozen times. It fits perfectly into many genres and it will be one of my new go-to machines. Great! Thanks for programming such a nice piece of audio software!.
It's been an absolute joy beta testing this monster and it has become my favourite free synth. I have been looking forward to it's release and now here it is! Fantastic work wavewarden and thank you for keeping it free.