Sigma Prime is developing a fully open-source Serenity (Ethereum 2.0 / ETH 2.0) client called Lighthouse, using the Rust programming language. The focus of Lighthouse will be to maximise both simplicity and security.
The Lighthouse project has received funding from the Ethereum Foundation and Vitalik Buterin; however, such funding is not adequate for a project of this scale. We still rely upon contributions from developers who are either working for free, or at a highly discounted rate.
Financial contributions to Lighthouse go directly to funding developers that work on Serenity, in order to realize a faster, safer, and more efficient Ethereum. The amount we have listed here can provide a conservative monthly salary for an additional developer.