Pacco

A bundler for modular and extensible web projects.

Why not WebPack?

Work on Pacco started before WebPack was even a thing. In most of the cases you'll want to stick with WebPack, but if you're building a modular and extensible web project, like a front-end framework, Pacco will make your life easier:

No configuration: it just works. But if you need to, you can customize almost everything.
Partial builds: you can compile your project excluding some particular files or folders. You don't have to compile anything that you don't need.
Extensibility: you can build on top of extensible projects, even inject files exactly before or after a particular file, or override some other file. Useful for adding a component to a framework, providing SASS variables or custom configurations in general.
Module priority: you can ensure your most important code stays closer to the beginning of your bundle, ensuring it will be executed as soon as possible, improving percieved performance.
Build on top of Gulp: you may want to add support for LESS, being Pacco built on top of Gulp means it is easy to extend.