Atuin has encrypted sync, that'll be a big difference.
I've used mcfly for years and I appreciate the hard work cantino has put into it, but mcfly is currently looking for a maintainer while the maintainer of Atuin has recently committed to doing so full time (https://ellie.wtf/posts/i-quit-my-job-to-work-full-time-on-m...). That may make a difference to some people considering which one to pick.
Both are implemented in Rust and use SQLite as storage, so both should be equally performant in terms of startup latency and storage capacity.
The ctrl+R UI of each is different but that comes down to personal taste.
I just tried to use atuin... I have to login, but I don't want to :( I tried to run a search locally... but I have to run a PostgreSQL server??? Why isn't it just allowing embedded DB like mcfly? I know this isn't the place for support, but I give up trying to get it to work :(
I'll also plug my project [0] as another alternative that supports syncing (similar to Autumn) and also has a number of powerful customization features (e.g. custom columns to collect arbitrary metadata with each command, like the git remote) and an AI shell command generator.
> The key feature of McFly is smart command prioritization powered by a small neural network that runs in real time. The goal is for the command you want to run to always be one of the top suggestions.
