I'm not trying to advocate for shiny object syndrome here, but as an app Capacities has to be one of the best for PKM. It's not perfect - no app is - but as a tool for me to organise information from the literature, it's a delight to use.

Here are the major features, over other apps, that keep me going back:

• It's simple to use. Once you grasp the main feature, which is that it relies on objects as catch pots for notes, rather than files per se, you'll be flying.

• It looks nice with just the right amount of customisation. Always a bonus.

• It uses backlinks, which are a useful feature over the likes of OneNote.

• Images, PDFs and websites are also objects which mean they can have their own attributes.

• Everything is anchored to both the calendar and an object type, meaning you know what you worked on when, and where it is.