Cardano (ADA), Toncoin (TON), and Avalanche (AVAX) are emerging Solana rivals to buy, as the SOL price signals a continuation of a sideways trend. Over the past five months, the Solana coin has wavered around the $160 level, projecting a lack of luster performance. Thus, the sellers could strengthen their grip in September if this altcoin fails to gain sufficient momentum in the coming week.