SubSquare is a company that provides RPC services for Polkadot, Statemint, and Westend. They are requesting funding to continue running these services and cover maintenance costs.
They have one Milestone in their proposal which is to continue running the RPC services on dedicated hardware in Sweden.
In Q1 2022, their Polkadot RPC service served an average of 8,122,333 requests per day.
They also turned on public RPC services for Statemint and Westend in mid Q1 2022. Since then, Statemint has served an average of 245,000 requests per day, and Westend has served 26,900 requests per day.
You can read their full proposal in the link provided.