Claude
Anthropic · AI assistants & chat
Anthropic's consumer and team assistant on web, desktop and mobile, with projects, artifacts, memory, connectors and web search, sold on Pro, Max, Team and Enterprise plans
ProprietaryFreemiumPaidNov 2, 2026
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Obsidian
Dynalist Inc. (Obsidian) · Personal knowledge management
Local-first Markdown note-taking app with bidirectional links, graph view and a large community plugin ecosystem; optional paid Sync and Publish
ProprietaryFreePaidLocalBroken
Zotero
Corporation for Digital Scholarship · Citation management
Free, open-source reference manager with browser connectors, word-processor plugins, a PDF reader, group libraries and optional paid file storage
AGPL-3.0-onlyFreeOpen sourceLocalNov 2, 2026
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