Sorry for bumping but I have a general question about security of Atomic wallet:

I have been using Atomic as my second wallet for rather small amounts of many "exotic" altcoins. Recently on some FB groups and crypto related forums I have seen many bad opinions about Atomic - not only high fees, but DISSAPEARING coins suggesting that they might had been stolen! Is this just some FUD? Is this wallet safe to use when you have a strong password and your seed is hidden in a good way? My main concern is: is it open or closed source, so it is possible that the makers of Atomic are able to see and... steal my coins?

And the second question: what is the best alternative for a desktop with multi-coin support? Exodus?