I used to use Mendeley, but after the evil empire bought them out and added anti-features like preventing export of the DB (or something like that, I don't remember exactly what it was anymore), I switched to Zotero. I was on the verge of exiting academic research at the time, so I don't have as much experience of Zotero, but it seems very solid. Strongly recommended!
(Occasionally I wonder about how Zotero development is going. IIRC they were planning to switch from XUL to Electron many years ago, maybe that plan got shelved or they just don't have the manpower to do it..)
(Occasionally I wonder about how Zotero development is going. IIRC they were planning to switch from XUL to Electron many years ago, maybe that plan got shelved or they just don't have the manpower to do it..)