# StackScout

> StackScout is a curated directory of AI developer tools and LLMOps infrastructure.
> Opinionated reviews and comparisons for engineering teams evaluating AI tooling for production.

## Categories

- [LLM Observability & Monitoring](https://stackscout.dev/category/llm-observability): Tools for tracing, debugging, monitoring, and optimizing LLM-powered applications in production. Track costs, latency, token usage, and prompt performance.
- [AI Agent Frameworks](https://stackscout.dev/category/agent-frameworks): Frameworks and libraries for building autonomous AI agents, multi-agent systems, and tool-using LLM applications.
- [Vector Databases](https://stackscout.dev/category/vector-databases): Purpose-built and general-purpose databases for storing and querying vector embeddings. Essential infrastructure for RAG, semantic search, and recommendation systems.
- [AI Code Review](https://stackscout.dev/category/ai-code-review): AI-powered pull request review tools that use LLMs, codebase indexing, and agentic workflows to catch bugs, enforce standards, and accelerate code review cycles.
- [AI Code Assistants](https://stackscout.dev/category/ai-code-assistants): IDE-integrated assistants, terminal agents, and vibe-coding platforms that help developers write, review, and ship code with AI.
- [LLM Infrastructure & APIs](https://stackscout.dev/category/llm-infrastructure): LLM API providers, inference hosting platforms, custom silicon accelerators, and enterprise AI gateways — the full stack for running and managing large language models in production.

## Articles & Guides

- [The LLM Infrastructure Landscape in 2025–2026](https://stackscout.dev/articles/llm-infrastructure-landscape-2025-2026): A comprehensive analysis of the LLM infrastructure market — from frontier API providers and open-weight models to custom silicon accelerators and enterprise AI gateways — covering pricing, capabilities, and actionable tradeoffs.
- [The AI Code Assistant Landscape in 2026: A Market Transformed by Agents](https://stackscout.dev/articles/ai-code-assistant-landscape-2026): A comprehensive analysis of the AI code assistant market — from IDE copilots and terminal agents to vibe-coding platforms — covering the big three, funding frenzy, open-source alternatives, and what comes next.
- [Best AI Agent Frameworks in 2026](https://stackscout.dev/articles/best-agent-frameworks): A curated comparison of the top AI agent frameworks — from LangGraph's graph-based control flow to OpenAI's batteries-included SDK. Which framework should you build on?
- [Best Vector Databases in 2026](https://stackscout.dev/articles/best-vector-databases): The definitive vector database landscape — 35+ tools across four tiers, head-to-head benchmarks, pricing at three scales, and a decision framework for choosing the right tool for your AI application.
- [Best AI Code Review Tools in 2026](https://stackscout.dev/articles/best-ai-code-review-tools): A curated comparison of the top AI-powered pull request review platforms — from diff-based bots to full codebase-aware agents.
- [Best LLM Observability Tools in 2026](https://stackscout.dev/articles/best-llm-observability-tools): A curated comparison of the top LLM observability and monitoring platforms for production AI applications.
- [CodeRabbit vs Greptile](https://stackscout.dev/articles/coderabbit-vs-greptile): Head-to-head comparison of CodeRabbit's plug-and-play PR review vs Greptile's deep codebase-aware analysis.
- [Langfuse vs LangSmith](https://stackscout.dev/articles/langfuse-vs-langsmith): Head-to-head comparison of the two leading LLM observability platforms — open-source Langfuse vs LangChain's LangSmith.
- [Qodo vs GitHub Copilot Code Review](https://stackscout.dev/articles/qodo-vs-github-copilot-review): Head-to-head comparison of Qodo's deep security-focused review agents vs GitHub Copilot's built-in convenience.

## Tool Reviews

- [Aider](https://stackscout.dev/tool/aider): Git-native terminal coding agent that works with any LLM
- [Amazon Q Developer](https://stackscout.dev/tool/amazon-q-developer): AWS-native AI assistant that excels at cloud migrations and Java modernization
- [Arize Phoenix](https://stackscout.dev/tool/arize-phoenix): Open-source LLM observability with ML monitoring roots
- [Augment Code](https://stackscout.dev/tool/augment-code): AI coding assistant with deep codebase understanding for enterprises
- [AutoGen](https://stackscout.dev/tool/autogen): Microsoft's multi-agent framework (succeeded by Microsoft Agent Framework)
- [Bito AI](https://stackscout.dev/tool/bito-ai): Live knowledge graph-powered code review and intelligence
- [Bolt](https://stackscout.dev/tool/bolt): Browser-based app builder powered by WebContainers that runs full Node.js in the browser
- [Braintrust](https://stackscout.dev/tool/braintrust): Enterprise AI product platform with eval-first approach
- [Cerebras](https://stackscout.dev/tool/cerebras): Wafer-scale AI chip delivering the fastest inference and training performance
- [Chroma](https://stackscout.dev/tool/chroma): The developer-first open-source vector database
- [Claude Code](https://stackscout.dev/tool/claude-code): Terminal-based coding agent that became the #1 tool among senior engineers in under a year
- [Cline](https://stackscout.dev/tool/cline): Open-source agentic VS Code extension with 59K stars and a thriving fork ecosystem
- [CodeRabbit](https://stackscout.dev/tool/coderabbit): Cut code review time and bugs in half instantly
- [Continue.dev](https://stackscout.dev/tool/continue-dev): Most flexible open-source model-agnostic IDE extension for AI coding
- [CrewAI](https://stackscout.dev/tool/crewai): Framework for orchestrating role-playing AI agents
- [Cursor](https://stackscout.dev/tool/cursor): AI-native IDE that rewrote the playbook for agentic code editing
- [DeepInfra](https://stackscout.dev/tool/deepinfra): Cost-optimized inference platform with 100+ models at industry-lowest prices
- [Devin](https://stackscout.dev/tool/devin): Ambitious autonomous AI software engineer with a $10.2B valuation and Windsurf acquisition
- [Fireworks AI](https://stackscout.dev/tool/fireworks-ai): Fastest inference platform with Multi-LoRA serving and compound AI systems
- [Gemini CLI](https://stackscout.dev/tool/gemini-cli): Google's open-source terminal agent with the most generous free tier and 1M-token context
- [GitHub Copilot](https://stackscout.dev/tool/github-copilot): AI pair programmer with the largest user base and deepest GitHub integration
- [GitHub Copilot Code Review](https://stackscout.dev/tool/github-copilot-review): AI code review built into the world's largest dev platform
- [Google Gemini Code Assist](https://stackscout.dev/tool/google-gemini-code-assist): Google's AI coding assistant with the largest context window and most generous free tier
- [Graphite Agent](https://stackscout.dev/tool/graphite-agent): Code review platform built for stacked PRs
- [Greptile](https://stackscout.dev/tool/greptile): Automated PR reviews with full codebase understanding
- [Groq](https://stackscout.dev/tool/groq): Custom LPU silicon delivering ultra-fast, deterministic LLM inference
- [Helicone](https://stackscout.dev/tool/helicone): LLM observability platform with one-line integration
- [JetBrains AI Assistant](https://stackscout.dev/tool/jetbrains-ai-assistant): AI coding assistant with the deepest IDE semantic integration in the market
- [Kilo Code](https://stackscout.dev/tool/kilo-code): Open-source agentic platform with transparent pricing
- [LanceDB](https://stackscout.dev/tool/lancedb): Serverless embedded vector database built on Lance columnar format
- [Langfuse](https://stackscout.dev/tool/langfuse): Open-source LLM engineering platform
- [LangGraph](https://stackscout.dev/tool/langgraph): Stateful, controllable agent orchestration by the LangChain team
- [LangSmith](https://stackscout.dev/tool/langsmith): Developer platform for LLM application lifecycle
- [LiteLLM](https://stackscout.dev/tool/litellm): Open-source LLM gateway supporting 2,000+ APIs in OpenAI-compatible format
- [LlamaIndex Workflows](https://stackscout.dev/tool/llamaindex-agents): Event-driven agent orchestration from the LlamaIndex team
- [Lovable](https://stackscout.dev/tool/lovable): Fastest-growing vibe coding platform — $100M ARR in 8 months
- [Milvus](https://stackscout.dev/tool/milvus): Cloud-native vector database for billion-scale enterprise AI
- [OpenAI Agents SDK](https://stackscout.dev/tool/openai-agents-sdk): OpenAI's lightweight SDK for building agentic workflows
- [OpenAI Codex CLI](https://stackscout.dev/tool/openai-codex-cli): Open-source terminal coding agent from OpenAI with 67K GitHub stars
- [pgvector](https://stackscout.dev/tool/pgvector): Vector similarity search for PostgreSQL
- [Pinecone](https://stackscout.dev/tool/pinecone): Fully managed vector database built for scale
- [Portkey](https://stackscout.dev/tool/portkey): Enterprise AI gateway with 1,600+ LLM integrations and policy-as-code governance
- [Pydantic AI](https://stackscout.dev/tool/pydantic-ai): Type-safe agent framework from the creators of Pydantic
- [Qdrant](https://stackscout.dev/tool/qdrant): High-performance open-source vector database written in Rust
- [Qodo](https://stackscout.dev/tool/qodo): Context-aware AI code review for complex codebases
- [Replit](https://stackscout.dev/tool/replit): Cloud IDE that pivoted to vibe coding and grew ARR 1,556% in one year
- [Reviewpad](https://stackscout.dev/tool/reviewpad): Workflow orchestration for human-in-the-loop code review
- [Semantic Kernel](https://stackscout.dev/tool/semantic-kernel): Microsoft's enterprise SDK for AI orchestration
- [smolagents](https://stackscout.dev/tool/smolagents): Hugging Face's minimalist library for code-writing agents
- [Sourcegraph Cody](https://stackscout.dev/tool/sourcegraph-cody): Enterprise AI assistant built on Sourcegraph's code graph for deep codebase understanding
- [Sourcery](https://stackscout.dev/tool/sourcery): Continuous code reviews and security scanning
- [Sweep AI](https://stackscout.dev/tool/sweep-ai): The fastest coding assistant for JetBrains IDEs
- [Tabnine](https://stackscout.dev/tool/tabnine): Enterprise-grade AI assistant built for air-gapped deployment in regulated industries
- [Together AI](https://stackscout.dev/tool/together-ai): Full-stack inference platform with 200+ models, fine-tuning, and custom training
- [Turbopuffer](https://stackscout.dev/tool/turbopuffer): Object-storage-first vector database with 10–100x cost savings
- [Upstash Vector](https://stackscout.dev/tool/upstash-vector): Serverless vector database with true pay-per-request pricing
- [Vespa](https://stackscout.dev/tool/vespa): Hybrid search and ML serving engine for billion-scale applications
- [Weaviate](https://stackscout.dev/tool/weaviate): Open-source vector database with best-in-class hybrid search

## Comparisons

- [Langfuse vs LangSmith](https://stackscout.dev/compare/langfuse-vs-langsmith): Open-source vs ecosystem-integrated LLM observability
- [CodeRabbit vs Greptile](https://stackscout.dev/compare/coderabbit-vs-greptile): Plug-and-play PR review vs deep codebase-aware analysis
- [Qodo vs GitHub Copilot Code Review](https://stackscout.dev/compare/qodo-vs-github-copilot-review): Enterprise security-focused vs platform-native AI review
- [Pinecone vs Weaviate](https://stackscout.dev/compare/pinecone-vs-weaviate): Managed serverless vs open-source vector database

## Best-of Guides

- [Best LLM Observability Tools 2026](https://stackscout.dev/best/llm-observability-tools): Top LLM monitoring and tracing platforms compared
- [Best AI Code Review Tools 2026](https://stackscout.dev/best/ai-code-review-tools): Top AI-powered PR review platforms compared