Mendeley vs Zotero vs Paperguide vs Research Rabbit

A side-by-side look at scores, pricing and features — with RECATOOLS' ASEAN-aware verdict for each.

	Mendeley Academic reference manager (Elsevier) Visit	Zotero Open-source reference manager Visit	Paperguide AI research assistant with semantic paper search Visit	Research Rabbit Visual citation-network mapper for papers — still free, now has RR+. Visit
RECATOOLS Score	6.8 / 10	8.4 / 10	6.8 / 10	7.7 / 10
Capability	6	8	6	7.5
Value for money	8	10	8	9
Ease of use	7	7	7	7.5
ASEAN readiness	7	6	5	6.5
API quality	6	7	5	0
Pricing	Freemium	Open Source	Freemium	Free
Free tier	—	—	—	Full access for free
Paid from	—	—	—	—
Has API	✗	✓	✗	✗
Open source	✗	✓	✗	✗
Free to use	✓	✓	✗	✓
Users	—	—	—	1m+ researchers
Founded	2007	2006	2023	2021
Maker	—	—	—	Riley Davis, Timothy Chang
Verdict	Mendeley is a long-established, free reference manager from Elsevier for collecting, organising, annotating, and citing research papers, with a desktop reference manager, PDF annotation, and citation plugins for Word. Fo...	Zotero is the open-source benchmark for reference management: free, no account tier required to use the core app, with one-click capture from the browser, automatic metadata extraction, a deep citation-style library, and...	Paperguide bundles AI literature search, citation-backed answers, a reference manager and an academic writing assistant over a large paper database, putting several research workflows in one tool. The free tier is unusua...	Research Rabbit maps citation networks, co-authorship, and topic timelines around any paper, and for years operated as a fully free public good for researchers. That changed on October 30, 2025: a redesign kept the core...
	Full review →	Full review →	Full review →	Full review →

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Comparisons cover up to 4 tools. Scores are RECATOOLS editorial assessments; verify current pricing on each vendor's site.