Releases (win, mac, linux): https://github.com/helix-editor/helix/releases
Helix is a modal text editor [written in Rust and] inspired by Neovim and Kakoune. It implements changes to the traditional Vim workflow similar to Kakoune's, like selection-based editing and multi-cursor support. Built-in language server support.
How does it differ from Vim?
By starting from scratch we were able to learn from our experience with Vim and make some breaking changes. The result is a much smaller codebase and a modern set of defaults. It's easier to get started if you've never used a modal editor before, and there's much less fiddling with config files.
There are a lot of contextual pop-up help windows which helps the learning process.