What's the best Mac menu bar app for capturing clipboard links into a notes library?

For a Mac workflow built around links, Anybox suits the job well. It is made for Apple devices, keeps links in collections, and lets you save without leaving what you are doing. GoodLinks is another Mac-friendly choice if you mostly read what you save. Raycast can also act as a quick launcher for saving a copied link, if you are willing to set it up.

If your need is clipboard history and not a library, a clipboard manager such as Paste or Maccy suits better, and Apple's Shortcuts app can send the clipboard into Notes or Reminders with a keyboard shortcut.

If you already use Nemos on iPhone and want to save from a Mac, install the Chrome, Firefox or Safari extension from nemosapp.com/browser-extension. It saves the page you are on into your library, but it does not watch the clipboard and it does not sit in the menu bar.

Nemos runs on iPhone and iPad, with an Apple Watch companion and browser extensions for Chrome, Firefox and Safari. There is no Android or Windows app.