Who is Solana's competitor?

Could you please elaborate on the question, "Who is Solana's competitor?" I'm interested in understanding the various players in the cryptocurrency sphere that pose a challenge to Solana's market position. Could you name a few key competitors and perhaps discuss their unique selling points or technological advancements that make them stand out? Additionally, I'm curious to know how Solana differs from these competitors and what strategies it might employ to maintain its competitiveness in the rapidly evolving crypto landscape. Thank you for your insights!