পদ্ধতির তুলনা করুন

	ওপেন অ্যাক্সেস জার্নালের ডিরেক্টরি	জার্নাল সাইটেশন রিপোর্টস	Web of Science ডাটাবেস
ক্ষেত্র	গ্রন্থমিতি	গ্রন্থমিতি	গ্রন্থমিতি
পরিবার	Process / pipeline	Process / pipeline	Process / pipeline
উদ্ভবের বছর	2003	1975	1964
প্রবর্তক	DOAJ Community (Swedish library consortium, later expanded to international consortium)	Institute for Scientific Information (ISI), now Clarivate Analytics	Institute for Scientific Information (ISI), now Clarivate Analytics
ধরন	Database	Tool	Database
মৌলিক উৎস	Directory of Open Access Journals. (2024). About DOAJ. Retrieved from https://doaj.org/	Clarivate Analytics. (2024). Journal Citation Reports. Retrieved from https://clarivate.com/webofsciencegroup/solutions/journal-citation-reports/	Clarivate Analytics. (2024). Web of Science Core Collection. Retrieved from https://clarivate.com/webofsciencegroup/solutions/web-of-science-core-collection/
অপর নাম	DOAJ, Directory of Open Access	JCR, Clarivate Journal Citation Reports	WoS, ISI Web of Science, Clarivate Analytics
সম্পর্কিত	5	5	5
সারসংক্ষেপ	The Directory of Open Access Journals (DOAJ) is a community-maintained, freely accessible directory of high-quality, peer-reviewed open-access journals and articles established in 2003. DOAJ indexes over 20,000 open-access journals across all disciplines (sciences, social sciences, humanities, arts) from diverse geographic regions. The directory serves researchers, librarians, and administrators as the authoritative curated list of legitimate open-access journals—differentiating quality open-access publications from predatory journals that lack genuine peer review. DOAJ quality seal, awarded to journals meeting stricter governance and transparency criteria, enables identification of the highest-caliber open-access publications.	Journal Citation Reports (JCR) is an annual publication by Clarivate Analytics providing comprehensive citation metrics and performance analytics for journals indexed in Web of Science Core Collection. Launched in 1975, JCR publishes Impact Factor, the most widely recognized journal quality metric, alongside supplementary metrics (5-year IF, Journal Citation Indicator, Immediacy Index, Cited Half-Life, and citation distribution analysis). JCR is the authoritative source for journal ranking, benchmarking, and impact assessment in research evaluation systems globally. Access requires institutional subscription, though some institutions provide free access to affiliated researchers.	Web of Science (WoS) is the oldest and most established multidisciplinary citation database, maintained by Clarivate Analytics since 1964. It indexes over 21,000 peer-reviewed journals, conference proceedings, and books across sciences, social sciences, and humanities. WoS provides researchers, librarians, and administrators with comprehensive citation tracking, publication metrics, and research evaluation tools essential for literature review, impact assessment, and research strategy.