Huginn is a system for building agents that perform automated tasks for you online. They can read the web, watch for events, and take actions on your behalf. Huginn's Agents create and consume events, propagating them along a directed graph. Think of it as a hackable Yahoo! Pipes plus IFTTT on your own server. You always know who has your data. You do.
Mailtrain is a self hosted newsletter application built on Node.js (v5+) and MySQL (v5.5+ or MariaDB). Mailtrain supports subscriber list management, list segmentation, custom fields, email templates, large CSV list import files, etc.
A painless self-hosted Git service.
Monitor the accessibility of your websites with pa11y-dashboard, and protect against accessibility errors creeping into your codebase.
Maily Herald is a Ruby on Rails engine that helps you send and manage your mailings.
Think of Maily as a self-hosted Mailchimp® you can easily integrate with your site.
A collection of the best open data sets and open-source tools for data science, wrapped in an easy-to-use REST/JSON API with command line, Python and Javascript interfaces. Available as a self-contained Vagrant VM or EC2 AMI that you can deploy yourself.
The Radicale Project is a complete CalDAV (calendar) and CardDAV (contact) server solution.
Prometheus is an open-source systems monitoring and alerting toolkit originally built at SoundCloud. Prometheus's main features are:
A self-hosted, web-based application for stream your music, everywhere.
A project to help users self-host their websites, email, files and more. Decentralize your web and reclaim your privacy rights while keeping the conveniences you need.
Web based code review and project management for Git based projects.
poche is a self hosted read-it-later app. unlike to other services, poche is free and open source.
GitPrep is Github clone. you can install portable github system into unix/linux. You can create users and repositories without limitation.
A personal cloud you can hack, host and delete
Python based delicious.com replacement
A free, hosted, portable and open source photo sharing service. A photo application that lets you store your photos on Dropbox, Amazon S3 or in your garage.