Quiver is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best Linux alternative is Joplin. It's not free, so if you're looking for a free alternative, you could try Standard Notes or Google Keep. If that doesn't suit you, our users have ranked more than 100 alternatives to Quiver and loads of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Quiver are Typora (Paid), Simplenote (Free, Open Source), CherryTree (Free, Open Source) and Zim (Free, Open Source).
Terminal Velocity is a fast, cross-platform (pip installable) note-taking application for the UNIX terminal, it’s a clone of the OS X app Notational Velocity that runs in a terminal and uses your $EDITOR.
Flashnote is a quick notes manager created for such cases. When you need a rough copy to save or to process some pieces of a text, Flashnote is small, quick and convenient. Press the shortcut-key combination and a rough copy is on the screen in a flash of a second.
Ora is an all-in-one realtime workspace for teams. It has everything your team might need to be productive. Task management, kanban, time tracking, chat, reports on projects and team productivity. It is powerful, yet simple and easy to use.
TaskLite is built from the ground up to be a command line task manager. It's functionality is similar to Taskwarrior but with a simpler codebase, reduced complexity, faster performance, and more active development.