Many tech stocks got punished in 2018, but some companies with still-strong organic growth and good prospects may have gotten unduly hurt -- like streaming-media company Roku (ROKU - Get Report)  .

Roku went into a tailspin after missing third-quarter revenue expectations and issuing weaker-than-expected guidance. All told, the stock lost more than 40% in 2018. But TheStreet's tech columnist Eric Jhonsa thinks Roku's strong user growth and profitability make its beaten-down share price very attractive right now.

Listen below to a full podcast about tech names that Jhonsa thinks could be good buys now -- including Amazon (AMZN - Get Report) , Alibaba (BABA - Get Report) , Netflix (NFLX - Get Report) and Dropbox (DBX - Get Report)  :