Bitgesell is a digital currency derived from Bitcoin. It has several enhanced features, including 100% SegWit implementation, a 10x smaller block weight, an annual halving for 4x faster scarcity compared to BTC, utilization of a more efficient Keccak hashing algorithm, and the burning of 90% of transaction fees. Bitgesell aims to be faster, more efficient, and more scarce than Bitcoin. It is primarily driven by the community and does not have a company backing it.