Sioyek: https://sioyek.info https://sioyek.info It's a PDF viewer that automatically finds and previews references in documents, even when the PDF doesn't have

Sioyek: https://sioyek.info https://sioyek.info It's a PDF viewer that automatically finds and previews references in documents, even when the PDF doesn't have links. Makes reading some math books a very enjoyable experience instead of a chore.