Autofocus is described as 'System is a simple yet effective time management system. It was developed by Mark Forster. Autofocus is a Windows desktop application based on the Autofocus System concepts and ideas' and is an app in the Office & Productivity category. There are more than 100 alternatives to Autofocus for a variety of platforms, including Windows, Mac, Android, Linux and Online / Web-based. The best alternative is Joplin. It's not free, so if you're looking for a free alternative, you could try Standard Notes or Microsoft OneNote. Other great apps like Autofocus are Evernote (Freemium), 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.