Hacker ApprovedDepartments

Zotero

Hacker Approved

Reference manager in Productivity & writing

Free, open-source reference manager for capturing, organizing and annotating papers, with easy sync. Critics say it slows with large libraries and extracts BibTeX unreliably.

Free, open-source reference manager for capturing, organizing and annotating papers, with easy sync. Critics say it slows with large libraries and extracts BibTeX unreliably.

81 people gave an opinion

recommend it
64
criticize it
17
approval share
79%
Each figure is one person. RecommendsCriticizes

Recommended in 11 of 13 months

  1. November 2025: recommended
  2. December 2025: recommended
  3. January 2026: recommended
  4. February 2026: recommended
  5. March 2026: recommended
  6. April 2026: recommended
  7. May 2026: recommended
  8. June 2026: not recommended
  9. July 2026: recommended
  10. August 2026: recommended
  11. September 2026: recommended
  12. October 2026: recommended
  13. November 2026: not recommended (month in progress)

Owned for 15 years

Median of the 5 owners who said how long they have had it.

Each square is one year.

Why it carries the badge

  • 64 people recommend itNeeds 10 or more, met.
  • 3.8 recommenders for every criticNeeds 2 to 1 or better, met.
  • Recommended in 11 of 13 monthsNeeds 4 or more, met.

The same three rules apply to every product, and the badge can’t be bought. How the badge works

What people say about it

The reasons people give, with the number of comments that give each one. Open a reason to read what they said.

Why people recommend it

Each mark is one comment

  • Browse, read and annotate PDFs

    “The killer feature isn't organizing the citation information, it's allowing me to browse and read local copies of the actual articles.”

    Comment from 14 Jul 2026 in “Ditching Zotero for a Text File”

    “I run the Zotero iOS app and it's absolutely perfect for annotating papers and keeping my bibliography organized.”

    Comment from 4 Mar 2026 in “Apple Introduces MacBook Neo”

    “it organizes my PDFs and lets me search them, instead of manually searching through directories”

    Comment from 23 Jan 2026 in “Zotero 8”
  • One-click web capture and archiving

    “It's obviously more focused on academic research but it takes snapshots and works as a more general purpose archive tool really well.”

    Comment from 12 Nov 2025 in “Perkeep – Personal storage system for life”

    “it allows to put the PDFs also into the collection and has web based browsing included without custom software”

    Comment from 12 Apr 2026 in “Zotero 9”

    “a great way of quickly archiving web pages you've visited, including quick tagging and full text search”

    Comment from 17 Sep 2026 in “Hister: A private search engine for the pages you visit and the files you keep”
  • Multi-device sync

    “I have many issues with Zotero (which has been dumbing down at the expense of power users for some time) – but easy private sync is definitely not one of them.”

    Comment from 8 Oct 2026 in “The Slow Formation of Durable Software”

    “where I can highlight and save my annotations and sync my library between devices”

    Comment from 6 Dec 2025 in “HTML as an Accessible Format for Papers (2023)”

    “for a low yearly price one can have multi-device sync and support the project”

    Comment from 23 Jan 2026 in “Zotero 8”
  • Fetches metadata from DOI or URL

    “Zotero will accept a doi/arxiv link (among other) and download the public metadata (authors, journal, abstract) for you”

    Comment from 19 Mar 2026 in “I may 'hire' AI instead of a graduate student”

    “With proper bibliography management tools, everything (that has one) is centered around the DOI.”

    Comment from 15 May 2026 in “New arXiv policy: 1-year ban for hallucinated references”

    “you can drag and drop files and it generates a reference based on the metadata”

    Comment from 12 Jul 2026 in “Ditching Zotero for a Text File”

What people warn about

Each mark is one comment

  • Slow and memory-heavy with large libraries

    “Zotero was slow when my single collection started pushing over 1,000 papers”

    Comment from 24 Jan 2026 in “Zotero 8”

    “Its unbearably slow though, and it doesn't seem this will ever get better.”

    Comment from 23 Jan 2026 in “Zotero 8”

    “it gets slow as hell eventually because it is a whole-ass firefox instance”

    Comment from 11 Aug 2026 in “Google Search Is Dying. What Comes Next Is Worse”
  • Unreliable BibTeX and metadata extraction

    “Tools like Zotero have certainly made it significantly easier to extract citations, but I still find issues with the extracted BibTeX details”

    Comment from 15 May 2026 in “New arXiv policy: 1-year ban for hallucinated references”

    “Zotero has only like 50% hit rate with finding the correct bibtex, and those are not that high quality either.”

    Comment from 13 Jul 2026 in “Ditching Zotero for a Text File”
  • Removed features and breaking upgrades

    “Zotero seems to have removed this killer import feature in later versions”

    Comment from 12 Jul 2026 in “Ditching Zotero for a Text File”

    “The Zotero 6 to 7 upgrade completely broke this, and modified the database so that rollback is not possible.”

    Comment from 23 Jan 2026 in “Zotero 8”

What people said

40 of the 101 comments that mention it, newest first. Each links to the original comment.

“I'm a big user and advocate of Zotero, but "it just works" is not a description that I'd say applies to it.”

MixedComment from 10 Oct 2026 in “The Slow Formation of Durable Software”

“it is owned by a non-profit who hasn’t made a single controversial update in 20 years”

RecommendsComment from 8 Oct 2026 in “The Slow Formation of Durable Software”

“I have many issues with Zotero (which has been dumbing down at the expense of power users for some time) – but easy private sync is definitely not one of them.”

MixedComment from 8 Oct 2026 in “The Slow Formation of Durable Software”

“I enjoy this setup because it allows me the convenience of saving files quickly using Zotero”

RecommendsComment from 8 Oct 2026 in “The Slow Formation of Durable Software”

“Zotero's and Mendeley's own readers are good, and for straight reading they may be all you need.”

RecommendsComment from 22 Sep 2026 in “Show HN: A desktop reader for Zotero and Mendeley that reflows two-column papers”

“a great way of quickly archiving web pages you've visited, including quick tagging and full text search”

RecommendsComment from 17 Sep 2026 in “Hister: A private search engine for the pages you visit and the files you keep”

“it gets slow as hell eventually because it is a whole-ass firefox instance”

MixedComment from 11 Aug 2026 in “Google Search Is Dying. What Comes Next Is Worse”

“I needed to use a reference management system like zotero to keep track of it”

MixedComment from 29 Jul 2026 in “Ask HN: How many AI agents do you actively use?”

“Recommend supporting Zotero as a first class citizen for importing papers”

RecommendsComment from 22 Jul 2026 in “Show HN: MindBase – an LLM that maintains a wiki from your notes and papers”

“The killer feature isn't organizing the citation information, it's allowing me to browse and read local copies of the actual articles.”

RecommendsComment from 14 Jul 2026 in “Ditching Zotero for a Text File”

“Zotero has only like 50% hit rate with finding the correct bibtex, and those are not that high quality either.”

CriticizesComment from 13 Jul 2026 in “Ditching Zotero for a Text File”

“the place where zotero and alike become useful is when you start to need a tree-like structure”

RecommendsComment from 13 Jul 2026 in “Ditching Zotero for a Text File”

“ebooks mean you can search highlights, categorize them, see summaries of them”

RecommendsComment from 13 Jul 2026 in “How to Read More Books”

“any document with > 100 references makes a very fast apple silicon computer slow as hell”

CriticizesComment from 12 Jul 2026 in “Ditching Zotero for a Text File”

“you can drag and drop files and it generates a reference based on the metadata”

RecommendsComment from 12 Jul 2026 in “Ditching Zotero for a Text File”

“Drag-and-drop of the PDF file worked for me in Zotero 9 (latest version).”

RecommendsComment from 12 Jul 2026 in “Ditching Zotero for a Text File”

“Zotero seems to have removed this killer import feature in later versions”

MixedComment from 12 Jul 2026 in “Ditching Zotero for a Text File”

“What's really cool is that you can use Zotero built in web APIs to get an external tool to manipulate your collection directly.”

MixedComment from 12 Jul 2026 in “Ditching Zotero for a Text File”

“With proper bibliography management tools, everything (that has one) is centered around the DOI.”

RecommendsComment from 15 May 2026 in “New arXiv policy: 1-year ban for hallucinated references”

“Tools like Zotero have certainly made it significantly easier to extract citations, but I still find issues with the extracted BibTeX details”

MixedComment from 15 May 2026 in “New arXiv policy: 1-year ban for hallucinated references”

“it allows to put the PDFs also into the collection and has web based browsing included without custom software”

MixedComment from 12 Apr 2026 in “Zotero 9”

“Zotero will accept a doi/arxiv link (among other) and download the public metadata (authors, journal, abstract) for you”

RecommendsComment from 19 Mar 2026 in “I may 'hire' AI instead of a graduate student”

“I run the Zotero iOS app and it's absolutely perfect for annotating papers and keeping my bibliography organized.”

RecommendsComment from 4 Mar 2026 in “Apple Introduces MacBook Neo”

“scan certain Obsidian folders for article drafts, add the cited literature to Zotero”

MixedComment from 15 Feb 2026 in “Kimi Claw”

“even just the one click capture via browser is immensely worth it”

RecommendsComment from 24 Jan 2026 in “Zotero 8”

“Zotero was slow when my single collection started pushing over 1,000 papers”

MixedComment from 24 Jan 2026 in “Zotero 8”

“I just wish they made it as easy as a compose file to run this on prem.”

MixedComment from 24 Jan 2026 in “Zotero 8”

“The Zotero 6 to 7 upgrade completely broke this, and modified the database so that rollback is not possible.”

CriticizesComment from 23 Jan 2026 in “Zotero 8”

“it organizes my PDFs and lets me search them, instead of manually searching through directories”

RecommendsComment from 23 Jan 2026 in “Zotero 8”

“for a low yearly price one can have multi-device sync and support the project”

RecommendsComment from 23 Jan 2026 in “Zotero 8”

“the piece of software in my life that I have the least issues with ever”

RecommendsComment from 23 Jan 2026 in “Zotero 8”

“Love Zotero, have been using it since I started out as a researcher.”

MixedComment from 23 Jan 2026 in “Zotero 8”

“Zotero is open source and developed by an independent, nonprofit organization”

RecommendsComment from 23 Jan 2026 in “Zotero 8”

“Im unaware of another open source tool that provides all zotero does that's lighter weight.”

RecommendsComment from 23 Jan 2026 in “Zotero 8”

“why does it take 850 MB RAM to open right after installing fresh on windows”

CriticizesComment from 23 Jan 2026 in “Zotero 8”

“Its unbearably slow though, and it doesn't seem this will ever get better.”

MixedComment from 23 Jan 2026 in “Zotero 8”

“very powerful with all the management and annotation possibilities”

RecommendsComment from 23 Jan 2026 in “Zotero 8”

“can't imagine writing an academic paper without it or a similar tool”

RecommendsComment from 7 Dec 2025 in “Over fifty new hallucinations in ICLR 2026 submissions”

“where I can highlight and save my annotations and sync my library between devices”

RecommendsComment from 6 Dec 2025 in “HTML as an Accessible Format for Papers (2023)”

“It's obviously more focused on academic research but it takes snapshots and works as a more general purpose archive tool really well.”

RecommendsComment from 12 Nov 2025 in “Perkeep – Personal storage system for life”

Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.