How do you mine altcoins via web browser? Is it profitable?
Which is the best cryptocurrency to mine except bitcoin?
You should try genesis mining, it can give you nice passive income. I personally prefer like to run masternode than buy mining tools. I already have more than 50k of XCPO coin which required to run it masternode. The income that you can get from masternode of XCPO is about $25 every day. You also can staking it, just buy XCPO in Cryptopia then move it to your wallet then you can start staking it. Although the income is not as much as masternode but it's better than only hold coin for long term. Which is the best cryptocurrency to mine except bitcoin?
Its not profitable at all, if you wanna mine for yourself. It could be profitable in case if visitors of your site mine crypto for you via coinhive and similar javascript ))) But even in this case its profitable only for huge sites with long-last visits. 
