Knowledge Graph AI Tools

AI Search HubOpen Source

One Query. All Search Skill. 聚合 Gemini、Grok、豆包、元宝等平台原生 AI 搜索能力，免费获取科技趋势、行业舆情、热点追踪、旅行规划、日常问题统一接进自己的 Agent 与工作流，指定链接免费爬取

MemoraOpen Source

Give your AI agents persistent, collective memory — with deduplicating absorb, supersession lineage, semantic search, and a graph UI. Speaks MCP.

Mcp Memory ServiceOpen Source

Open-source persistent memory for AI agent pipelines (LangGraph, CrewAI, AutoGen) and Claude. REST API + knowledge graph + autonomous consolidation.

Open OntologiesOpen Source

Plan, apply and roll back changes to a production ontology, with a blast radius report and a proof an auditor can re-check.

Second Brain OsOpen Source

Guides and resources for AI engineers: an agents course, five handbooks, a hands-on second-brain project and a vetted reading list.

SpecflowOpen Source

One shared knowledge base for agentic delivery