bearcat-todo - a simple todo app built on bearcat and express, bearcat makes it easy write simple, maintainable node.js.
node-express-mongoose - A boilerplate application for building web apps using express, mongoose and passport.
backbone-express-mongoose-socketio - Boilerplate app supplying backbone, mongoose, and socket.io.
express-site-template - jade, stylus, sessions with redis.
express-mongoose-es6-rest-api - A boilerplate application for building REST APIs using express and mongoose in ES6 with code coverage.
Boilerplate - boilerplate app supplying Express, Connect, Socket-IO, Jade/Pug and more.
A list of these is on the Express.js website Frameworks built on Express page. Many other frameworks in the Node.js ecosystem are built on top of Express itself. A list of compatible engines is on the Express.js website Template Engines page. The Express res.render supports pluggable template engines.
krauter - An extended Router that accepts strings/objects and generates middleware that performs parameterized database queries.
Express run middleware - Small utility to manually trigger (calling) express routres, from your code.
express-switch - express-switch is a pattern matching middleware for express.
Express Shared Routes - Small library that let you name routes and easily create navigation components like menus and breadcrumbs.
Express State - Share configuration and state data of an Express app with the client-side via JavaScript.
Express Path - Easy route mapping for Express.
express-module-server - Middleware wrapper for google's module-server.
express-group - Group express routes and middleware.
express-error-with-sources - Plain javascript port of express-error that have syntax highlighting.
express-error - Injects source code into Express 3 error stack for JavaScript and CoffeeScript.
Express Load - Autoload scripts (routes, models, controllers.) into application instance for large Express applications.
Express Helpers - Misc view helpers for Express (broken link, try this package).