Waypoint.nvim is a Neovim plugin that lets developers bookmark and navigate specific lines of code within unfamiliar codebases, with features to rearrange waypoints and view surrounding context. It's gaining minimal traction (9 HN points) but addresses a real developer pain point—staying oriented in large legacy code during feature work.

One insight: This is a niche developer tool with low friction to build (a Lua plugin scaffold is trivial to copy), but the actual wedge opportunity is thin: Neovim adoption is still small, the problem is solved adequately by existing IDE bookmarks and comment-based workflows, and the founder shows no prior shipping history or audience to amplify distribution.