Reminder: this is undercounting. Some of most active projects are private (@binance), un-launched (@CodaProtocol), or not a coin (@lightning)
@block_one_
@Dogecoin is abandoned, @Litecoin lost almost all its developers in 2018, and forks like @BitcoinDiamond and @bitcoingold have fewer than 5 developers working on them a month (perspective: Bitcoin itself has ~50 developers a month)
If you spot an error/missing project, let us know🤝
Methodology: de-duped commit data to eliminate forks, open source libraries, and separated the "core" protocol code from "total" updates from website, wallets, and docs