Zoterovs
Obsidian


Obsidian: A powerful knowledge base on top of a local folder of plain text Markdown files

Collect, organize, annotate, cite and share your research
As of 28 August 2026, Zotero has a free plan and paid plans start at $20/year. Open source citation and reference management tool with optional paid cloud storage plans for syncing libraries. Softwr lists it under Research.
Overview
Open source citation and reference management tool with optional paid cloud storage plans for syncing libraries.
The honest half
Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about Zotero.
Cross-shopped
Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.


Obsidian: A powerful knowledge base on top of a local folder of plain text Markdown files


Roam Research: A note-taking tool for networked thought


Elicit: The AI research assistant


Mendeley: The free all-in-one reference manager
Pricing
Taken from the vendor's own pricing page. Prices move, so check before you buy.
Free
Free
2 GB Storage
$20 /yr
6 GB Storage
$60 /yr
Unlimited Storage
$120 /yr
Answered, with sources
Each answer names the page it came from, so you can check it rather than take our word for it.
The free tier includes 300 MB of storage for research materials, citations, and related files. Collaboration features in group libraries are available at no additional cost.
SourceZotero offers three paid storage tiers: 2 GB for $20 per year ($1.67 monthly), 6 GB for $60 per year ($5 monthly), and Unlimited storage for $120 per year ($10 monthly).
SourceGroup library file storage draws from the group owner's personal storage account, not a separate quota. Collaboration in group libraries is available at no additional charge.
SourceKeep looking
A powerful knowledge base on top of a local folder of plain text Markdown files
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Softwr does not host reviews and shows no star rating for Zotero, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.
What people switch to, and what they give up
Every tier, and where the cost actually lands
Put it head to head with anything we hold
Its rating, and an embed for your own site
Science-aware laboratory platform combining LIMS, ELN and scientific data management
quoteR&D cloud for biotechnology research and molecular biology
Free for academics, quoted for organisationsUX research repository for tagging notes, building insights and finding them again years later
Flat monthly fee, unlimited usersElectronic data capture and eConsent for clinical trials, built for investigator-initiated studies as well as sponsors
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