@123e16e8 @2da88588 For the past 20+ years I've maintained a bibliography (now at ~13 000 entries) using nothing but #Emacs #auctex & #bibtex mode on what's basically just a text (.bib) file. A short #elisp function also allows me to immediately open the document (say, pdf or djvu) corresponding to the entry, simply by entering F9 anywhere on the entry. This system has several advantages:

Emacs's regexp-search together with reftex-citation allow for incredibly powerful and flexible searches through the database
Any other interaction niceties more or less easily implementable through elisp code. For instance, I have a custom function that abbreviates a selected piece of text according to ISO 4 standard
It's basically just a text file, so in particular situations one can search or modify with any text editor
Automatically integrated with Emacs & AUCTeX when writing TeX files (in Emacs of course :) )

Of course it's a purely subjective choice, I'm not saying it's objectively better than any other. But worth considering and trying!

https://media.emacs.ch/media_attachments/files/111/057/553/524/343/906/original/7d12273d5c1fec5a.png 

 @2a286e20 @123e16e8 @2da88588 Very impressive! A good showcase of the power of Emacs, Elisp and auctex. Thanks for sharing.