Who is Solana's biggest competitor?

Could you please elaborate on who Solana's primary contender in the cryptocurrency market is? I'm particularly interested in understanding the key factors that distinguish its main rival, such as their technological advancements, market capitalization, and overall popularity among investors. Additionally, how does this competition affect Solana's position in the industry? Is there a significant gap between them, or is the race tighter than it appears? I'm keen to gain insights into this dynamic relationship within the cryptocurrency ecosystem.