--- title: "Tech Stack" source: "https://sebastien.morel.me/stack.md" description: "Technologies, frameworks and tools used, past and present." --- # Tech Stack Technologies, frameworks and tools used, past and present. ## Stack ### AI & Agentic Tooling The AI tools and frameworks I use daily to build agentic workflows, MCP servers, and AI-augmented development pipelines. - **Claude Code** — My daily driver! Anthropic’s agentic coding CLI that turns Claude into an autonomous software engineer, capable of editing files, running commands, and managing entire workflows. - **CMUX** — Multi-agent orchestration! A terminal multiplexer for coding agents that enables running and managing multiple Claude Code sessions in parallel across isolated worktrees. - **Codex** — OpenAI’s agent CLI! OpenAI’s open-source agentic coding CLI that runs as a terminal-based agent, executing code changes and shell commands autonomously. - **Vercel AI SDK** — Build AI apps fast! A TypeScript toolkit for building AI-powered applications with streaming, tool calling, and multi-provider support for LLMs. ### Living on the Edge This is the fun stack, the cutting-edge tech I experiment with in my free time and, occasionally, at work. - **Cloudflare** — Just ship it! An all-in-one cloud platform offering security, performance, and scalable infrastructure with Workers, KV storage, and more. - **Hono JS** — The new kid on the blockt that rocks! A fast, lightweight web framework designed for building APIs and microservices with support for multiple runtimes, including Cloudflare Workers and Bun. - **Bun** — Fast, Fast, Fast! A fast, modern JavaScript runtime designed for efficiency, supporting TypeScript natively and ideal for CLI tools. - **React Router v7** — Embrace the platform! A lightweight, intuitive routing library for React, enabling nested routes and progressive enhancement. - **Astro** — Static, new dynamic! A fast, modern static site builder that optimizes content-driven websites using islands architecture and MDX. - **Meilisearch** — OSS fast search! An open-source, highly performant, and typo-tolerant search engine designed for fast indexing and querying. ### Professional The technologies I use exclusively at work. Not always cutting-edge, but reliable and efficient. - **Nest JS** — I can't say I love it but I use it! A progressive Node.js framework built on top of Express and Fastify, using TypeScript and modular architecture to create scalable and maintainable backend applications. - **MongoDB** — Database and more! A NoSQL database designed for high performance and scalability, storing data in a flexible, JSON-like format. - **Next.JS** — (Too) magical frontend? A React framework for full-stack development, offering server-side rendering, static generation, and API routes. - **AWS** — Everything on it! A leading cloud provider offering scalable computing, storage, networking, and managed services for web applications. ### The Basics Timeless technologies I use daily or whenever they make sense for a project. - **Typescript** — (Type) safety first! A statically typed superset of JavaScript that improves code quality, maintainability, and developer experience. - **PostgreSQL** — THE database! A powerful, open-source relational database with advanced features, strong ACID compliance, and extensibility. - **Redis** — Cache and Pub/Sub in one! An in-memory key-value store optimized for caching, session management, and real-time analytics. - **SQLite** — The swiss knife of databases! A self-contained, serverless, zero-configuration, transactional SQL database engine used in embedded systems and small applications. - **React JS** — The component Way! A declarative JavaScript library for building component-based user interfaces with a focus on performance and reusability. - **Tailwind CSS** — I just follow on that one A utility-first CSS framework that enables rapid UI development with a focus on customization and consistency. - **Docker** — Easy provisioning! A containerization platform that simplifies application deployment and scaling by packaging dependencies together. - **Git** — What would we do without it? A distributed version control system that enables collaborative development and efficient code management. - **Github** — Certified and fan boy! A cloud-based Git repository hosting service with collaboration, CI/CD, and project management features. - **RabbitMQ** — Async is The Way! A message broker that enables asynchronous communication between distributed services. - **Varnish** — HTTP Cache on Steroids! A high-performance HTTP accelerator that speeds up web applications by caching frequently requested content. - **Algolia** — (Expensive) fast search! A fast, developer-friendly search-as-a-service platform offering real-time search and instant filtering. - **Shell** — Because we need it! A command-line interface for executing scripts, automating system tasks, and managing processes efficiently. - **Makefile** — Can't live without it! A tool used for build automation, dependency tracking, and task execution in development environments. ### My Previous Life - Up to the Late 2010s The stack I worked with during my PHP web agency days. - **Ibexa** — Multiple times Certified! A digital experience platform (DXP) providing content management, e-commerce, and personalization capabilities. - **PHP** — My first love! A server-side scripting language widely used in web development, powering many CMSs and web applications. - **Symfony** — Certified 5.x, still love it! A modular PHP framework with a vast ecosystem, used for building scalable and maintainable web applications. - **MySQL** — My first database! A widely-used open-source relational database, known for its reliability, performance, and strong community support. - **Solr** — Only for the brave! An enterprise-grade open-source search platform built on Apache Lucene, designed for indexing and querying large datasets. - **Platform SH** — PaaS that rocks! A cloud hosting platform that simplifies application deployment with automatic scaling and Git-based workflows. - **Travis** — Good old CI! A continuous integration and deployment service that automates software testing and builds. ### Old School I would not use these technologies today but you never know! - **Objective-C** — I teached it! A legacy programming language for macOS and iOS applications, replaced by Swift for modern development. - **Swift** — I miss it! Apple’s modern programming language designed for safety, performance, and seamless integration with iOS and macOS. - **Ansible** — That was fun! An open-source automation tool used for configuration management, application deployment, and infrastructure orchestration. - **eZ Platform** — Multiple times Certified! An open-source CMS built on Symfony, designed for structured content management and enterprise web applications. - **eZ Publish** — Multiple times Certified! A legacy CMS known for its extensibility and structured content approach, widely used in enterprise projects. - **Memcached** — I would still use it! A distributed memory caching system used to speed up dynamic web applications by reducing database load.