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RAG & Retrieval

Connect LLMs to your data — ingestion, indexing, retrieval.

arkon logo
1
nduckmink avatarnduckmink 1.2k · 2 months ago
arkon

Self-hosted enterprise knowledge hub + MCP server: an LLM pipeline compiles SOPs and docs into a traceable, human-reviewed wiki, then serves it to AI clients scoped by department and role.

rag
alternative to MaxKB
11
chroma-core avatarchroma-core 29.1k · yesterday
Chroma

Open-source embedding database for building AI apps with retrieval.

ragmemory
pairs well with xberg, chunkr
chunkr logo
8
lumina-ai-inc avatarlumina-ai-inc 4.1k · 4 months ago
chunkr

Document intelligence API in Rust: layout analysis, OCR with bounding boxes, and semantic chunking that turn PDFs, PPTs and Word docs into RAG-ready structured chunks.

ocrrag
pairs well with LlamaIndex, Chroma
cocoindex logo
4
cocoindex-io avatarcocoindex-io 11.4k · 2 days ago
cocoindex

Rust-core incremental indexing engine: declare Target = F(Source) in Python and it keeps vector/graph/relational targets fresh forever, reprocessing only the delta — with per-row lineage.

rag
alternative to LlamaIndex, tokensave
code-graph-rag logo
4
vitali87 avatarvitali87 4.7k · today
code-graph-rag

Parses a polyglot monorepo with Tree-sitter into a Memgraph knowledge graph: query it in plain English (NL→Cypher), trace data flow, find dead code, edit via AST-surgical patches.

code-intelrag
alternative to codegraph-mcp, codebase-memory-mcp
codegraph-mcp logo
9
cognis-digital avatarcognis-digital 7 · 1 months ago
codegraph-mcp

No-train, on-prem code knowledge graph served to AI agents over MCP — symbols, call edges, cross-language links and blast-radius queries, with a hash-chained audit log of every read.

code-intelrag
pairs well with omnigraph, tokensave
crawl4ai logo
5
unclecode avatarunclecode 78.7k · today
crawl4ai

The 74k-star LLM-native crawler: turns any site into clean, RAG-ready Markdown — adaptive crawling, JS rendering, extraction strategies, Docker deploy. Python, Apache-2.0.

webrag
pairs well with browser, Agent-Reach
DSPy logo
1
stanfordnlp avatarstanfordnlp 37.4k · yesterday
DSPy

Program — don't prompt — your language models. Compile declarative pipelines into optimized prompts.

orchestrationrag
alternative to LangGraph
Graft logo
3
NanoNets avatarNanoNets 3.8k · today
Graft

Context layer for large codebases: a graph of plain-English markdown nodes — no embeddings, no index — agents read like any repo file. Claude Code hooks + MCP; 42% fewer tokens in its bench.

code-intelrag
alternative to codebase-memory-mcp, tokensave
Hyper-Extract logo
5
yifanfeng97 avataryifanfeng97 3.3k · 8 days ago
Hyper-Extract

Knowledge-extraction CLI: LLMs turn documents into structured graphs, hypergraphs and spatio-temporal knowledge — with an MCP server for agents and Obsidian vault export.

knowledge-graphsrag
pairs well with open-ontologies, omnigraph
ktx logo
3
Kaelio avatarKaelio 1.5k · 1 months ago
ktx

Self-improving context layer for data agents — ingests dbt/Looker/wikis, maps your warehouse, builds a semantic layer with approved metrics, and serves Claude Code/Codex via CLI and MCP.

ragagents
alternative to WrenAI, mirage
10
run-llama avatarrun-llama 51.8k · yesterday
LlamaIndex

Data framework for connecting custom data sources to LLMs — ingestion, indexing, retrieval.

ragagents
pairs well with Ragas, MemMachine
4
1Panel-dev avatar1Panel-dev 22.5k · today
MaxKB

Open-source enterprise agent platform: RAG pipelines (upload or crawl docs), a visual workflow engine with MCP tool-use, and zero-code embedding into existing business systems.

agentsrag
pairs well with Ollama, arkon
MinerU logo
12
opendatalab avataropendatalab 78k · yesterday
MinerU

Heavyweight document-to-markdown/JSON parser — PDFs plus Office (docx/pptx/xlsx) through layout analysis and OCR into LLM-ready output for RAG and agentic pipelines. 73k stars, self-hostable.

ocrrag
alternative to olmocr, xberg
morphik-core logo
2
morphik-org avatarmorphik-org 3.7k · 28 days ago
morphik-core

Multimodal retrieval engine for visually rich documents: ingestion, visual-first search over charts, tables and diagrams, knowledge graphs and cache-augmented generation — one engine, not a pipeline.

rag
alternative to PixelRAG, chunkr
olmocr logo
10
allenai avatarallenai 19.4k · 4 months ago
olmocr

Open toolkit that linearizes messy PDFs — scans, tables, equations, handwriting — into clean ordered Markdown with a self-hosted vision-language model. Built for LLM training data and RAG ingestion.

ragocr
pairs well with LlamaIndex, Chroma
open-notebook logo
2
lfnovo avatarlfnovo 37.1k · 4 days ago
open-notebook

Self-hosted NotebookLM alternative: multi-modal sources, vector plus full-text search, context-aware chat and multi-speaker podcast generation — 18+ model providers incl. Ollama, full REST API.

ragstorage
pairs well with Ollama, karakeep
opendataloader-pdf logo
3
opendataloader-project avataropendataloader-project 28.6k · 2 days ago
opendataloader-pdf

Deterministic PDF parser for AI pipelines: #1 extraction accuracy (0.907) on its public bench, bounding boxes on every element, 0.015s/page — plus the first open PDF auto-tagging for accessibility.

ocrrag
pairs well with PageIndex, MinerU
PageIndex logo
5
VectifyAI avatarVectifyAI 35.3k · today
PageIndex

Vectorless, reasoning-based RAG — builds a hierarchical tree index from long documents so an LLM retrieves by relevance instead of similarity. No chunking, no embeddings, no vector DB.

rag
pairs well with opendataloader-pdf, Ragas
6
firecrawl avatarfirecrawl 16.3k · yesterday
pdf-inspector

Firecrawl's Rust PDF triage: classifies text-based vs scanned in ~10-50ms, extracts positioned text and clean Markdown without OCR — routing the ~54% of PDFs that never needed a model.

ocrrag
pairs well with anydoc, chandra
pgGraph logo
2
Evokoa avatarEvokoa 1k · 4 days ago
pgGraph

PostgreSQL extension adding graph search, traversal and shortest-path over your existing tables — a derived graph index queried from plain SQL, no separate graph DB or query language. Rust.

knowledge-graphsrag
alternative to ontobricks, omnigraph
PixelRAG logo
3
StarTrail-org avatarStarTrail-org 9.6k · 20 days ago
PixelRAG

Berkeley's visual RAG: render pages and PDFs to screenshot tiles and retrieve with a VLM embedder — tables, charts and layout survive. pixelshot CLI plus a hosted 8.28M-page Wikipedia index.

ragvision
alternative to MinerU, morphik-core
Ragas logo
7
explodinggradients avatarexplodinggradients 15.4k · 5 months ago
Ragas

Evaluation toolkit for your RAG and agent pipelines — faithfulness, relevance, and more.

evalsrag
pairs well with LlamaIndex, AutoGen
searchbox logo
3
hanxiao avatarhanxiao 52 · 1 months ago
searchbox

Airgapped closed-corpus QA testbed: a local Qwen agent in a Pi harness explores a .zip dataroom with grep/embeddings/rerankers under a token budget — a bed to study search as test-time compute.

localragagents
pairs well with Ollama, Ragas
sie logo
3
superlinked avatarsuperlinked 2.8k · 10 days ago
sie

Self-hosted inference cluster for everything agents call besides the big LLM: embeddings, rerankers, OCR, NER, guardrails and small LLMs — 100+ models, one OpenAI-compatible API, K8s stack included.

localrag
alternative to vLLM, Ollama
supavec logo
3
supavec avatarsupavec 1.2k · 7 months ago
supavec

Open-source RAG-as-a-service (the Carbon.ai alternative): upload any data source, get vector search and a chat API in minutes — Supabase-based, multi-tenant with RLS, streaming responses.

rag
alternative to PageIndex, MaxKB
SurfSense logo
5
MODSetter avatarMODSetter 16k · yesterday
SurfSense

Open-source competitive-intelligence platform for agents: live Reddit/YouTube/TikTok/Maps/search connectors; scheduled agents produce briefs and alerts into a cited knowledge base. REST + MCP.

webrag
pairs well with flowsint, last30days-skill
swiftide logo
2
bosun-ai avatarbosun-ai 774 · yesterday
swiftide

Rust framework for LLM apps: an agent harness, compile-time-typed task graphs, and streaming RAG pipelines — MCP toolboxes, human-in-the-loop approval, tracing with Langfuse support.

ragagents
alternative to LangGraph, cocoindex
txtai logo
2
neuml avatarneuml 12.9k · yesterday
txtai

All-in-one AI framework around an embeddings database — dense, sparse, graph and relational fused — with pipelines, workflows, agents and MCP/web APIs. Python, bindings for JS/Java/Rust/Go.

rag
alternative to LlamaIndex, Chroma
Unlimited-OCR logo
5
baidu avatarbaidu 24.2k · 22 days ago
Unlimited-OCR

Baidu's open OCR VLM that parses entire multi-page documents in one shot — 'unlimited' long-horizon parsing pushing DeepSeek-OCR further. MIT weights on HF; serve via transformers, vLLM or SGLang.

ocrrag
alternative to olmocr, MinerU
unstract logo
2
Zipstack avatarZipstack 7.1k · today
unstract

LLM-driven platform turning unstructured documents into structured data: a no-code Prompt Studio to define extractions, then deploy as APIs or ETL pipelines. Self-hosted, AGPL + enterprise.

ocrrag
alternative to chunkr, MinerU
xberg logo
6
xberg-io avatarxberg-io 9.2k · yesterday
xberg

Rust-core document-intelligence engine with 15 language bindings: turns 96 formats — PDF, Office, images, audio, code — into clean text, tables and RAG-ready chunks. Library, CLI, REST or MCP.

ocrraglocal
pairs well with Chroma, LlamaIndex
zvec logo
1
alibaba avataralibaba 15.5k · today
zvec

Alibaba's open-source in-process vector database: billion-scale similarity search embedded in your app, with DiskANN on-disk indexing, native full-text search and hybrid retrieval.

rag
alternative to Chroma