What can I write? An easy scripting language tool with a lot of comfort ideas for easy prototyping of dsp algos or just doing some non-so-mainstream fx/gen and that crossplatform, fast, quite stable and free? How could I vote below 10 then?
Try it! Quite some interesting algos available in the package and also the forum. Ok the preset loading is quite rudimentary and could provide more comfort. A donate button is missing on the webpage.
Synth1 is just the best cross platform freeware synth. It perfectly fits for pads, leads, basses with an analog and slightly randomized touch. It even features a mono stable stereo widener, very good sounding unison features. Only the Mac version seems to be quite unstable, it also crashes when it comes to preset saving/loading, at least on OS X 10.9+. The gui code has a bunch of bugs. preset loading can be a pain because of bugs. A pity the author doesn't seem to fix it anymore. You can use Synth1 for kick drums, too, but then you should sample it, because of the unstable sound character. Synth1 is one of the rarely synths that features oscillator sync. What's missing for me is another filter that doesn't colorize the sound so much as the current filter does.