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CLUSTER ANSWERS-DOCUMENTS-KNOWLEDGE · 24 ENTRIES · EARLIEST ENTRY 2026-09-16

Enterprise document Q&A with citations

This cluster covers enterprise knowledge platforms that ingest documents and answer questions with cited sources via chat and retrieval-augmented generation. The dated history is too thin to read a shape from, with only 3 entries predating the index start, so the cluster likely predates the index or many members are undated. Traction leaders are DocVectra (8 stars), ResearchAI-MultiAgent (3 stars), and langchainrag (2 stars).

Entry timeline

ENTRY TIMELINE

MAY 2026: 1AUG 2026: 2SEP 2026: 15OCT 2026: 6
MAY 2026OCT 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 1 ai-built · 1 hand-coded · 18 unlabelled

Operator · 11 hobby · 1 indie · 1 commercial · 7 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 20 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01openkb2★19 days—Open-source knowledge base with collaborative editing, review workflows, and AI chat that cites sources.
  2. 02notework-ai1★2 dayslivehobbyObsidian plugin that turns notes into a queryable knowledge graph and answers questions with cited source passages.
  3. 03graph-rag-knowledge-base1★8 days—hobbyKnowledge-base assistant that ingests PDFs, Markdown, and images, then answers questions about the documents with cited evidence.
  4. 04OmniRag-AI1★3 dayslivehobbyDocument question-answering assistant that ingests PDFs, CSV files, and code, then answers questions with cited source passages and summaries.
  5. 05vectapass0★16 days—Event platform that ingests the organizer's rules document and answers attendees' questions using it as the source.
  6. 06feedback-intelligence0★16 days—hobbyPlatform that ingests customer feedback and knowledge documents, labels them, and answers questions with AI-generated responses and citations.
  7. 07zhixing-notes0★23 dayslivehobbyWeb platform that hosts documentation and an AI assistant for cited Q&A, and lets users generate, review, and publish their own knowledge-base articles.
  8. 08Aether0★3 days—Knowledge engine that ingests documents into a cited knowledge graph and answers queries with evidence-backed claims reviewed by humans.
  9. 09second-brain0★8 days—hobbySelf-hosted personal knowledge base that captures browsing history and uploaded documents, then answers questions from them with cited sources.
  10. 10rag-assistant0★12 days—Knowledge-base assistant that answers questions strictly from provided documents with cited sources via chat and command line.
  11. 11infinite-knowledge-ai0★17 days—commercialAI knowledge platform that turns uploaded documents into searchable answers with traceable source citations.
  12. 12Inkwell0★4 days—hobbyKnowledge platform that ingests documents and provides AI-generated, cited answers through a chat interface, with dashboards and analytics.
  13. 13kb-agent0★12 days—hobbyDocument question-answering system that ingests internal files and answers questions with cited sources from the knowledge base.
  14. 14contextos0★25 daysliveAI knowledge platform that ingests documents and answers questions through chat with cited sources.
  15. 15enterprise-document-intelligence-rag0★12 days—hobbyFull-stack platform that ingests enterprise documents, retrieves grounded context, and delivers citation-backed answers with access controls.
  16. 16AI--MEMORY-VAULT0★18 days—Personal AI memory system that imports documents and notes and answers natural-language questions with cited evidence.
  17. 17DocVectra8★1 mo—Enterprise-grade knowledge base that ingests documents and provides precise AI-powered search and Q&A for vertical domains.
  18. 18ragkg1★1 mo—hobbySelf-hosted question-answering system that builds a knowledge graph from documents and answers queries with citations and graph visualization.
  19. 19unified-ops0★1 molivehand-codedindieDocument Q&A system that ingests scanned documents, extracts text, and answers user questions grounded in retrieved content.
  20. 20Prompt-to-Ontology14★3 mo—ai-builthobbyIndustrial knowledge graph platform that ingests CSV data, builds typed ontologies, and supports rule evaluation and agentic reasoning.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.