Alternote is described as 'Gorgeous note-taking app for Mac with Evernote integration. Alternote has pixel-perfect interface, robust search, distraction-free mode and lots more' and is a popular app in the Office & Productivity category. There are more than 100 alternatives to Alternote for a variety of platforms, including Windows, Mac, Android, Online / Web-based and iPhone. The best alternative is Joplin, which is both free and Open Source. Other great apps like Alternote are Standard Notes (Freemium, Open Source), Google Keep (Free), Microsoft OneNote (Freemium) and Evernote (Freemium).
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.