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 (Free), Simplenote (Free, Open Source), CherryTree (Free, Open Source) and Zim (Free, Open Source).
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, can be copied, tagged and modified either from the applications directly or from your own text editor.
Todoist is a task manager thats useful, fast and easy to use. Accomplish more, every day. Millions of people rely on Todoist to get things done. Todoist lets you manage your tasks anywhere. At home. At school. At work. Online. Offline. And on 13 platforms and devices.