Evernote software could be described as a ‘digital notebook’. It can be used to write notes and to compile research materials in various formats; text, entire webpages, images, video & audio. It can be used to store files, create moodboards and sketches.
All of this information is stored in your account and synced across applications on your mobile phone, desktop and other devices. Information is retrieved by keyword search, tag or even printed and handwritten text inside images. The basic version is free.
Try it out and compare the features with Zotero to see which best suits your aims. You may fins one system is better for academic work and the other more useful for your studio practice.