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Liminary vs OpenCrab
Liminary 记录了 12,246 月访问量，月度环比增长为 -30.4%，定价为免费增值。OpenCrab 记录了 0 月访问量，增长率为 -100%，定价为免费增值。
Liminary 记录了 12,246 月访问量，月度环比增长为 -30.4%，定价为免费增值。OpenCrab 记录了 0 月访问量，增长率为 -100%，定价为免费增值。
OpenCrab is an ontology-centered Graph RAG platform that turns documents, URLs and notes into reusable knowledge packs you can query from any AI client over MCP.
| 维度 / 指标 |  | |
|---|---|---|
| 官方域名 | liminary.io | opencrab.sh |
| 定价模式 | 免费增值 | 免费增值 |
| 月访问量 | 1.22万 (12,246) | 0 (0) |
| 月度环比流量变化 | -5342 (-30.4%) | -1888 (-100%) |
| 主要市场与份额 | 🇺🇸 美国 (59.1%) | 🌐 全球 (—) |
| 直接访问 / 月 | 4874 | 0 |
| 用户评分 | 4.1 | 4.1 |
| 支持的平台 | 网站 | 网站 |
在你需要时主动浮现记忆的 AI 知识层
浏览时抓取网页、PDF、视频、报告与大模型对话，并可加入自己的笔记与背景。
无需等待你搜索，Liminary 在你写作与开会时主动浮现相关的已保存材料。
在恰当时机拉入正确信息的会议伙伴，事后保存摘要、完整转录与你的笔记以备后续召回。
每个回答都指明来源，无论内部还是外部，让你核实说法而不是信任黑箱。
OpenCrab is an ontology-centered Graph RAG platform that turns documents, URLs and notes into reusable knowledge packs you can query from any AI client over MCP.
Upload documents, URLs, notes or code and let the platform handle parsing, OCR and chunking automatically.
Extract entities, concepts, evidence, relationships and claims into a graph where every node traces back to a source.
Bundle a graph into a versioned, reusable pack you can share with your team or sell in the marketplace.
One MCP server lets Claude, ChatGPT, Cursor, Codex and other clients query the same graph.
Studocu is a global study platform where students share and access lecture notes, summaries, study guides and past exams, with an AI assistant, quizzes, flashcards and note tools to help them learn faster.
专项更强用可视化论文图谱探索学术文献
Paper Digest is an AI research platform that summarizes literature, generates literature reviews with citations, and delivers daily digests of new papers across arXiv, PubMed, bioRxiv and major conferences. Launched in 2018 and used by millions of researchers, it combines a citation-backed review engine that avoids inventing results with tools for reading PDFs, writing, question answering, claim verification and topic tracking.
Paper Digest is an AI research platform that summarizes literature, generates literature reviews with citations, and delivers daily digests of new papers across arXiv, PubMed, bioRxiv and major conferences. Launched in 2018 and used by millions of researchers, it combines a citation-backed review engine that avoids inventing results with tools for reading PDFs, writing, question answering, claim verification and topic tracking.
