Paisley is an open-source alternative to Mailbrew. It runs as a command-line app that gathers content you care about and emails it to subscribers as a digest.

Getting started

• Clone the repository and install dependencies with npm
• Describe your subscribers in a YAML schema file
• Configure an email account and run it on your own machine

A small, hackable Node.js project for people who want personal newsletters without a subscription service. The README states it is available under the MIT license.