Solana is described as 'Ultra-fast and low-cost blockchain platform that uses a unique "cryptographic clock" technology (Proof-of-History) to power decentralized applications and digital assets like NFTs' and is an website in the bitcoin & cryptocurrency category. There are more than 50 alternatives to Solana, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and Android apps. The best Solana alternative is Bitcoin, which is both free and Open Source. Other great sites and apps similar to Solana are Ethereum, Litecoin, Zcash and Alephium.