Almanac vs LightRAG vs obsidian-wiki
Side by side, from each listing’s own data. A row where every column says the same is shown once, dimmed.
 Almanacby AlmanacRemove Almanac from this comparison |  LightRAGby HKU Data Science LabRemove LightRAG from this comparison |  obsidian-wikiby Arnav (Ar9av)Remove obsidian-wiki from this comparison | |
|---|---|---|---|
| Sets it apart | — |
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| What it is | Compiles a company-wide wiki from Slack, files, wikis, and repos, then gives agents its own computer plus MCP search over that shared brain. | Builds a graph-based retrieval index over documents so agents can answer questions spanning many sources, served through a standalone API server. | Compiles what you and your coding agent learn into a linked Obsidian markdown wiki through agent skills, a CLI, and an MCP memory server, for developers who want persistent agent memory. |
| Provider | Almanac | HKU Data Science Lab | Arnav (Ar9av) |
| Official vendor | Not an official listingSame for all | ||
| Verified | YesSame for all | ||
| Access | MCP | API, CLI | API, MCP, CLI, Extension |
| Auth | OAuth 2.0 | None | None |
| MCP server | In its setup guide | No MCP server | In its setup guide |
| CLI install | No CLI | In its docs | In its docs |
| API base URL | No API | In its docs | In its docs |
| Skills | Brain Search, Wiki Compilation, Page Scraping | Graph Index, Hybrid Query, Incremental Update, API Serving | Knowledge Ingest, Cited Wiki Queries, Vault Lint and Dedup, Session Memory, MCP Memory Service |
| Streaming | NoSame for all | ||
| Push notifications | NoSame for all | ||
| Categories | Memory & State, Research & Knowledge | Memory & State, Research & Knowledge, Vector Databases | Memory & State |
| Tags | company-knowledge, shared-wiki, slack-ingest, yc-backed, agent-computer, knowledge-search | graph-rag, retrieval, knowledge-graph, embeddings, document-indexing, question-answering, memory-backend | obsidian, knowledge-base, markdown, agent-memory, second-brain, claude-code, python, llm-wiki |
| Listed since | Sep 2, 2026 | Sep 18, 2026 | Oct 10, 2026 |
| Use it now | |||
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