Which exchange has the largest number of altcoins available?

[Fafabol]

Definitely depends on what coins you'll trade because there's some coins that have a higher trading volume in this exchange and some are not. So better to check it on coinmarketcap to see what exchange site have a higher volume. But mostly higher volume is in major exchange sites.

[Edrahil67]

Forkdelta add a lot of select coin every week. I won't be surprise if they reach 1000 altcoin soon