VS-Code extension. Last commit was 2 days ago. Very active and up to date... [https://github.com/pragmagic/vscode-nim](https://github.com/pragmagic/vscode-nim)
Vim extension. Last commit was 3 days ago, and the main author is very active on the nim irc channel. [https://github.com/alaviss/nim.nvim](https://github.com/alaviss/nim.nvim)
