Notational Velocity - Notational Velocity: modeless, mouseless Mac OS X note-taking application
Notational FZF - Notational Velocity for Vim.
nvPY - nvPY is a note-taking tool inspired by Notational Velocity, nvALT and ResophNotes.
Trilium Notes - Trilium Notes is a hierarchical note taking application.
NVim - NVim is a ...
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.