libmodulor – An opinionated TS library to build multi-platform apps
Initially I started building this for my own projects. The main goal was to define a unified "blueprint" allowing me to develop multi-platform apps using the same code, without code generation. I wanted to be able to develop the same functionality on web, desktop, cli, server, mobile, whatever... I've been able to achieve this by relying on TypeScript, a 4-layer architecture (UseCase => App => Product => Target) and dependency injection. This mechanism allows me to use whatever tech stack I want, provided the good adapters are developed. For instance, I have pre-built ones : node express…
In plain words
libmodulor is a TypeScript library that enables developers to build applications for multiple platforms—web, desktop, CLI, server, and mobile—using the same codebase without code generation. It uses a four-layer architecture and dependency injection to work with various tech stacks, including Node Express, Next.js, React, React Native, and different databases like PostgreSQL and SQLite. The library comes with pre-built adapters and automated testing capabilities, making it suited for developers who want to maintain unified codebases across diverse platforms.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Initially I started building this for my own projects. The main goal was to define a unified "blueprint" allowing me to develop multi-platform apps using the same code, without code generation. I wanted to be able to develop the same functionality on web, desktop, cli, server, mobile, whatever... I've been able to achieve this by relying on TypeScript, a 4-layer architecture (UseCase => App => Product => Target) and dependency injection. This mechanism allows me to use whatever tech stack I want, provided the good adapters are developed. For instance, I have pre-built ones : node express (server), next.js (server), node hono (server in alpha), node parseArgs (CLI), node stricli (CLI), react-web-pure (web with no CSS), react-native (mobile), node mcp server (anthropic MCP in alpha), etc. The same goes with data storage : Postgres, SQLite, a txt file, whatever. It also comes with auto testing and auto documentation. Did I reinvent the wheel ? Probably on some aspects. Is it too much abstraction ? Probably as well. But I like the idea of modularity and portability. That's why it's not made for everyone, nor all types of projects. If you like testing new stuff, give it a try and feel free to ping me if needed, I'd love to help. I'm aware the documentation is not state of the art yet. I wanted to focus on the "Getting Started" Guide to give a quick overview instead of going to deeply into the details. Best,
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