OneKE alternatives
6 rag tools in the same lane as OneKE, ranked by editorial score.
LA
LangExtract
RAG · Multi-model (Gemini, GPT-4/4o, Ollama-hosted local models)
7.1
Google's open-source Python library for LLM-driven structured extraction from unstructured text, with source-grounded outputs.
Free· Library is free (Apache-2.0); LLM API costs depend on chosen backendstructured-extractiondocument-parsing
WE
WeKnora
RAG · Multi-model
7.2
Tencent's open-source RAG framework that turns raw documents into a queryable knowledge base, ReAct agent, and self-maintaining wiki.
Free· Free, open-source (self-hosted)document-qaenterprise-knowledge-base
UI
Unstructured.io
RAG · In-house layout and table models plus optional OpenAI / Anthropic / Bedrock embeddings and enrichment
Turn unstructured enterprise documents into LLM-ready data
Freemium· Free: Free · Pay-As-You-Go: $0.03 / page · Business: CustomRAG document ingestionPDF and PPTX parsing
OP
OpenDataLoader PDF
RAG
7.1
Open-source PDF parser built for RAG pipelines, with reading-order detection, table extraction, and bounding-box citations.
Freemium· Free (Apache 2.0); enterprise tier for PDF/UA export and visual editorpdf-parsingrag-preprocessing
KO
Kotaemon
RAG · Multi-model (OpenAI, LlamaCPP, any OpenAI-compatible endpoint)
7.0
Open-source RAG UI for chatting with your own documents, locally or self-hosted.
Free· Free, open-source (MIT-style); self-hosted infrastructure costs onlydocument-qaprivate-rag
DO
Docling
RAG · GraniteDocling 258M and other vision-language models
Open-source document parsing for AI: PDFs, Office files, audio and video into clean, structured Markdown/JSON
Free· Free and open source under MIT License. Hosted by the LF AI & Data Foundation; no paid tiers.RAG document ingestionPDF table extraction