Python bib-file Projects
Bibcure helps in boring tasks by keeping your bibfile up to date and normalized...also allows you to easily download all papers inside your bibtexProject mention: Papis 0.13: A CLI document and bibliography manager | news.ycombinator.com | 2023-05-07
You don't normally need to enter metadata manually. You can import it using the publication's doi, arxiv etc. Then papis gives you an opportunity to review and update the metadata. The other functionality that papis provides is a quick search through titles, authors etc.
Of course much of that can be done with doi2bib , arxiv2bib , etc., which you can combine with the wonderful bibtool  to keep a clean bibtex file. That's what I use and the advantage of this over papis is that you can version control it.
That said papis has its use. It's less heavy than zotero, a bit less proprietary format (the info is stored in yaml files iirc) and it provides a layer over bibtex. If it had full text indexing and search I could see myself using it more.
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