LangChain
by Various
LangChain provides the engineering platform and open source frameworks developers use to build, test, and deploy reliable AI agents.
Apps
LangChain
Added 1 June 2026
Overview
LangChain offers open source frameworks and a platform for building, testing, and deploying AI agents. Developers use its modular components to chain together language model calls, tools, and data sources.
Best for
Best for
Developers building multi-step LLM applications or agentic systems
Use cases
- Build custom AI agents that call APIs and databases
- Create retrieval-augmented generation pipelines for document Q&A
- Orchestrate multi-step workflows with language models
Notes
LangChain offers open source frameworks and a platform for building, testing, and deploying AI agents. Developers use its modular components to chain together language model calls, tools, and data sources.
Use cases
- Build custom AI agents that call APIs and databases
- Create retrieval-augmented generation pipelines for document Q&A
- Orchestrate multi-step workflows with language models
Pros
- Modular design lets you swap models and components easily
- Large community and extensive documentation
- Supports many model providers and integrations out of the box
Cons
- Abstraction layers can obscure debugging and performance tuning
- Rapidly evolving API can break existing code between versions
- Learning curve for complex chains and agent patterns
Indexed from awesome-generative-ai and enriched against its public facts.
Pros
- Modular design lets you swap models and components easily
- Large community and extensive documentation
- Supports many model providers and integrations out of the box
Cons
- Abstraction layers can obscure debugging and performance tuning
- Rapidly evolving API can break existing code between versions
- Learning curve for complex chains and agent patterns
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About OneKEOneKE is a new v...
OpenAI o3-mini
Community
Pushing the frontier of cost-effective reasoning.
OpenLIT
Community
Open source platform for AI Engineering: OpenTelemetry-native LLM Observability, GPU Monitoring, Guardrails, Evaluations, Prompt Management, Vault, Playground. 🚀💻 Integrates with
OpenLLM
Community
Run any open-source LLMs, such as DeepSeek and Llama, as OpenAI compatible API endpoint in the cloud.
Opik
Community
Debug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations, and production-ready dashboards.
Parea AI
Community
The experimentation and human annotation platform for AI teams.
Pezzo 🕹️
Community
🕹️ Open-source, developer-first LLMOps platform designed to streamline prompt design, version management, instant delivery, collaboration, troubleshooting, observability and more.
Pinecone
Community
Search through billions of items for similar matches to any object, in milliseconds. It’s the next generation of search, an API call away.
Portkey
Community
Democratize and productionize Gen AI across your entire org with Portkey
promptfoo
Community
Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, DeepSeek, and more. Simple declarative config
PromptLayer 🍰
Community
Version, test, and monitor every prompt and agent with robust evals, tracing, and regression sets. Empower domain experts to collaborate in the visual editor.
PromptSource
Community
Toolkit for creating, sharing and using natural language prompts.
Puzzlet AI
Community
Redirecting...
Qdrant
Community
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/
Qwen2-0.5B|1.5B|7B|57B-A14B-MoE|72B
Community
GITHUB HUGGING FACE MODELSCOPE DEMO DISCORD Introduction After months of efforts, we are pleased to announce the evolution from Qwen1.5 to Qwen2. This time, we bring to you: Pret
RagTune
Community
EXPLAIN ANALYZE for RAG retrieval — inspect, debug, benchmark, and tune your retrieval layer
semantic-coverage
Community
Automated detection of knowledge gaps and blind spots in RAG vector stores.
Semantic Kernel
Microsoft
Microsoft's enterprise-flavoured framework for AI agents. .NET-first, with Python and Java siblings.
SGLang
Community
SGLang is a high-performance serving framework for large language models and multimodal models.
StableLM-v2-12B
Community
We’re on a journey to advance and democratize artificial intelligence through open source and open science.
Temporal
Temporal
Durable execution at enterprise scale. The control plane that survives anything.
TensorZero
Community
TensorZero builds open-source tools for production-grade LLM applications: LLM gateway, observability, optimization, evaluations, and experimentation.
Text-Embeddings-Inference
Community
A blazing fast inference solution for text embeddings models
text-generation-inference
Community
Large Language Model Text Generation Inference
traceAI
Community
Open Source AI Tracing Framework built on Opentelemetry for AI Applications and Frameworks
vLLM
Community
A high-throughput and memory-efficient inference and serving engine for LLMs
VisualWebArena
Community
Project webpage for the VisualWebArena paper.
Weights & Biases
Community
W&B Weave helps developers evaluate, monitor, and iterate continuously to deliver generative AI applications with confidence.
Yi-34B
Community
We’re on a journey to advance and democratize artificial intelligence through open source and open science.
Zeno
Community
AI Data Management & Evaluation Platform
Cleanlab
Various
Check every AI response in real time with guardrails. Cleanlab detects hallucinations, missing context, and other issues by scoring each output for trust and accuracy.
Cohere
Various
Cohere builds powerful models and AI solutions enabling enterprises to automate processes, empower employees, and turn fragmented data into actionable insights.
Gemini
Various
A family of multimodal large language model developed by Google Deepmind.
Helicone AI
Various
AI Gateway & LLM Observability
QuillBot
Various
Write effortlessly and efficiently with Quillbot's suite of AI tools. Paraphrase, check grammar, analyze tone, improve fluency, and more. Start doing your best work.
Together AI
Various
Build what's next on the AI Native Cloud. Full-stack AI platform for inference, fine-tuning, and GPU clusters — powered by cutting-edge research.
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A 27-page field guide to the AI coding workflow with Claude. Claude Code, MCP servers, the prompt patterns that work, and what to delegate. Free.
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