#1
[EMNLP2025] "LightRAG: Simple and Fast Retrieval-Augmented Generation"
37K starsJun 18, 2026 pushrag-knowledgePythonKnowledge Graph
$ npx skills add HKUDS/LightRAGAlternatives
Langchain Course alternatives for AI agents.
Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.
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Langchain Course
A project-based course repository for developing AI agents using LangChain v1+ and LangGraph: search agents, RAG systems, reflection agents, and code interpreters.
89
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#2
๐ PageIndex: Document Index for Vectorless, Reasoning-based RAG
34K starsJul 18, 2026 pushrag-knowledgePythonVector Search
$ npx skills add VectifyAI/PageIndex#3
Free and Open Source, Distributed, RESTful Search Engine
77K starsJun 16, 2026 pushrag-knowledgeJavaSearch
$ npx skills add elastic/elasticsearch#4
Private AI platform for agents, assistants and enterprise search. Built-in Agent Builder, Deep research, Document analysis, Multi-model support, and API connectivity for agents.
18K starsSep 14, 2026 pushrag-knowledgePythonSemantic Search
$ npx skills add arc53/DocsGPT#5
This repository showcases various advanced techniques for Retrieval-Augmented Generation (RAG) systems. Each technique has a detailed notebook tutorial.
28K starsJun 17, 2026 pushrag-knowledgeJupyter NotebookSemantic Search
$ npx skills add NirDiamant/RAG_Techniques#6
high-performance graph database for real-time use cases
22K starsJun 19, 2026 pushrag-knowledgeGoKnowledge Graph
$ npx skills add dgraph-io/dgraph#7
Tantivy is a full-text search engine library inspired by Apache Lucene and written in Rust
15K starsJun 16, 2026 pushrag-knowledgeRustSearch
$ npx skills add quickwit-oss/tantivy#8
๐ก All-in-one AI framework for semantic search, LLM orchestration and language model workflows
13K starsJun 22, 2026 pushrag-knowledgePythonSemantic Search
$ npx skills add neuml/txtai#9
๐ Open source distributed and RESTful search engine.
13K starsJun 16, 2026 pushrag-knowledgeJavaSearch
$ npx skills add opensearch-project/OpenSearch#10
Apache Lucene open-source search software
3.5K starsAug 26, 2026 pushrag-knowledgeJavaSearch
$ npx skills add apache/lucene#11
100+ AI Agent & RAG apps you can actually run โ clone, customize, ship.
114K starsJun 13, 2026 pushdataPythonRAG
$ npx skills add Shubhamsaboo/awesome-llm-apps#12
Build Real-Time Knowledge Graphs for AI Agents
28K starsJun 20, 2026 pushdataPythonRAG
$ npx skills add getzep/graphiti#13
An open source, privacy focused alternative to NotebookLM for teams with no data limits. Join our Discord: https://discord.gg/ejRNvftDp9
15K starsJun 27, 2026 pushdataPythonRAG
$ npx skills add MODSetter/SurfSense#14
A Simple and Universal Swarm Intelligence Engine, Predicting Anything. ็ฎๆด้็จ็็พคไฝๆบ่ฝๅผๆ๏ผ้ขๆตไธ็ฉ
70K starsAug 3, 2026 pushrag-knowledgePythonKnowledge Graph
$ npx skills add 666ghj/MiroFish#15
SearXNG is a free internet metasearch engine which aggregates results from various search services and databases. Users are neither tracked nor profiled.
32K starsJun 16, 2026 pushrag-knowledgePythonSearch
$ npx skills add searxng/searxng#16
Qdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the next generation of AI. Also available in the cloud https://cloud.qdrant.io/
33K starsJul 18, 2026 pushrag-knowledgeRustVector Search
$ npx skills add qdrant/qdrantHow to choose
When should you switch?
Use an alternative when it has a clearer install path, higher trust score, fresher maintenance, or better platform fit for your current agent stack. Keep Langchain Course if it already passes your workflow test and repository review.
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Open the compare page, test the install commands in a sandbox, and check each repository before using a skill in production.