I use Zotero and I like too much, Indeed I use it with web facilities, as collecting references, integration wth Firefox, etc.
I tried Endnote once, but I did'nt like it. Most likely because I use Zotero a lot and I like it, and not because one is better than other.
I think you can try Mendeley too. It is another one, at the first moment was developt for Apple's O.S., but now is avaliable for Windows too (not linux).
Depending on your needs, bur EndNote is a reference. Zotero has other advantages but I think, for create, use your own library and write and prepare your papers, EndNote is extremely good.
If you buy EndNote is good for references, if you one to try a free and open-source reference management software zotero is the best. I don't like proprietary software as EndNote, so my advise use Zotero and prove the power of ope-source.
Zotero is good and it is an open access software. However, I used Endnote most of the time. If you got it, it is better to use it because you can access your referencing every where in endnote referencing.
Unlike zotero, EndNote has more citation styles than any other program, more flexibility, ability to customize styles. Therefore, working with unusual or complex citation styles, cite unusual document types or create your own document type can be easily done. Zotero can't support such important activities.
Personally i am finding endnote easier to use. However, i am trying to learn zotero but i have failed to extract references direct from google scholar to my ward document using zotero.
I am an EndNote user, and I believe the program has many more features than Zotero. That said, Zotero is free, so I think it is hard to make a fair comparison there. Once you learn the features of EndNote (e.g. many citation styles, the ability to modify styles, seamless downloading and modification of citations), it is hard to go back to using freeware.
For those looking for free citation management Software, Zotero is what they're looking for! The paid version of Endnote is the king of citation managers. Here is a good comparison.
Having used endnote yaers ago, I now need to start using RM s/w again. Although I can afford to pay for endnote, I wanted to try the free apps, plus endnote has been very complicated for me (although I am pretty computer literate) back in the years and one reason I git tired and quit...
I first tried Mendely - it was the one that attracted me most, however after a day of experimentation it drove me nuts. First Mendeley recerence manager - the newer app - which lacks way too many features to be useful, then Mendeley desktop, which is comparable to Zotero in terms of features. However, the sync function was not working properly eg after building a trial library on desktop I synced and the online version did not change. I then pressed sync online which changed my local library back to square one. Many times articles were given info of another random paper, not from within my library, or pdfs were attached to the wrong parent item albeit being renamed as the latter. Deduplicating was an absolute mess, with missing papers.There was easy way to locate where pdfs were actually being stored, as not all of them were “downloaded” to a mendeley golder on my pc - some yes but some would stay on the initial fokder I had placed them after dl. Then Mendeley ref crashed and I kept getting strange window boxes of errors. Then I uninstalled all Mendeley products... which btw didnt erase all relative folders and content (and to be honest I havent checked for reg entries).
Zotero performed seamlessly in all the above features so gains my trust. Easier to learn and to use, more consistent and reliable. Importantly, very easy to migrate libraries to another location or software.
Now, I havent tried EndNote this time around, and I suspect it might be a more complete program (from what I remember it had tons of features). However this makes it more difficult to work with and with a very steeper learning curve, plus you have to pay for it. No reason unless you need the extra staff.
I have been using both both as browser plugins and desktop applications. My experience is that the endnote browser plugin works really well with extracting online sources to Zotero (desktop), so perhaps one could keep on using both to take advantage of their strong features.
I was recently pressured into buying EndNote20, I had been using Zotero. If I could take it back I would have saved the money, Zotero is easy to use and doesn't freeze up like EndNote does. Zotero allows you to view and annotate attached PDFs with a more in depth PDF viewer than EndNote. It may be that I'm not used to it yet but, I can't get over how clumsy it feels to import a reference from the internet. The Zotero plugin for Chrome is very effective and will automatically import the PDF of the article or snapshot of webpage. In the rare case it's unable to find the PDF it's just as easy as in EndNote to attach it by dragging and dropping into your library. EndNote looks more polished and I'm sure is more powerful in certain scenarios but I've found you can do anything in Zotero you can in EndNote especially since it is open source and you can edit advanced properties of the reference manager if you are inclined. Just like EndNote, Zotero keeps changes made to references synced and available anywhere with an internet connection. There is limited free space on their cloud server, however it is a decent amount and there is the option to pay for more storage.