InstaSwap is a non-custodial cryptocurrency exchange. It allows buying, selling, and swapping cryptocurrencies. The platform is launched by Blocktech Private Company which is registered with Hellenic Capital Markets Commission. This registration is a sign telling us that the company is legit and is subjected to thorough audits. InstaSwap is available for use in the US.
Coinmate is a UK-based cryptocurrency exchange, launched in 2013. According to its official website, the exchange is aimed at Security, Speed, and Reliability.