#1
Deeplake is AI Data Runtime for Agents. It provides serverless postgres with a multimodal datalake, enabling scalable retrieval and training.
9.2K starsMay 21, 2026 pushrag-knowledgeC++Vector Search
$ npx skills add activeloopai/deeplakeAlternatives
Caiss alternatives for AI agents.
Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.
Current skill
Caiss
一款简单好用的 跨平台/多语言的 相似向量/相似词/相似句 高性能检索引擎。欢迎star & fork。Build together! Power another !
49
Quality
74
Trust
549
Stars
#2
Easy to use open source fast database for search | Good alternative to Elasticsearch | Drop-in replacement for E in the ELK stack
12K starsJun 16, 2026 pushrag-knowledgeC++Search
$ npx skills add manticoresoftware/manticoresearch#3
Similarities: a toolkit for similarity calculation and semantic search. 相似度计算、匹配搜索工具包，支持亿级数据文搜文、文搜图、图搜图，python3开发，开箱即用。
901 starsMar 5, 2026 pushrag-knowledgePythonSearch
$ npx skills add shibing624/similarities#4
JVector: the most advanced embedded vector search engine
1.7K starsJun 15, 2026 pushrag-knowledgeJavaSearch
$ npx skills add datastax/jvector#5
Endee.io – A high-performance vector database, designed to handle up to 1B vectors on a single node, delivering significant performance gains through optimized indexing and execution. Also available in cloud https://endee.io/
1.3K starsJun 10, 2026 pushrag-knowledgeC++Vector Search
$ npx skills add endee-io/endee#6
🚀 efficient approximate nearest neighbor search algorithm collections library written in Rust 🦀 .
2.7K starsFeb 17, 2026 pushrag-knowledgeRustSearch
$ npx skills add hora-search/hora#7
Memory layer for AI Agents. Replace complex RAG pipelines with a serverless, single-file memory layer. Give your agents instant retrieval and long-term memory.
16K starsMay 27, 2026 pushrag-knowledgeRustSemantic Search
$ npx skills add memvid/memvid#8
DeepRec is a high-performance recommendation deep learning framework based on TensorFlow. It is hosted in incubation in LF AI & Data Foundation.
1.2K starsJan 21, 2025 pushrag-knowledgeC++Search
$ npx skills add DeepRec-AI/DeepRec#9
rats-search: BitTorrent P2P multi-platform search engine for Desktop and Web servers with integrated torrent client
1.9K starsJun 3, 2026 pushrag-knowledgeC++Search
$ npx skills add librats/rats-search#10
Open-source LLM knowledge platform: turn raw documents into a queryable RAG, an autonomous reasoning agent, and a self-maintaining Wiki.
16K starsJun 18, 2026 pushrag-knowledgeGoSemantic Search
$ npx skills add Tencent/WeKnora#11
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#12
Free and Open Source, Distributed, RESTful Search Engine
77K starsJun 16, 2026 pushrag-knowledgeJavaSearch
$ npx skills add elastic/elasticsearch#13
🦔 Fast, lightweight & schema-less search backend. An alternative to Elasticsearch that runs on a few MBs of RAM.
21K starsJun 12, 2026 pushrag-knowledgeRustSearch
$ npx skills add valeriansaliou/sonic#14
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#15
The AI search platform
7.0K starsJun 18, 2026 pushrag-knowledgeJavaVector Search
$ npx skills add vespa-engine/vespa#16
PISA: Performant Indexes and Search for Academia
1.1K starsMay 6, 2026 pushrag-knowledgeC++Search
$ npx skills add pisa-engine/pisaHow 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 Caiss if it already passes your workflow test and repository review.
Next step
Compare top candidates side by side
Open the compare page, test the install commands in a sandbox, and check each repository before using a skill in production.