Synology Note Station - Without needing to spend money on Evernote, Synology Note Station provides a desktop client to organize all your random notes in one place.
Domain-Monitor.io - Looking for the complete domain and website uptime monitoring solution? Domain Monitor keeps an eye on your website, cron, SSL and domain name 24/7 and will alert you through Email, SMS and web when something stops working.
Note Board - Productivity app. Save information like a sticky notes.
DomainMOD - DomainMOD is an open source application written in PHP & MySQL used to manage your domains and other internet assets.
UpNote - A beautiful and clean cross-platform app for notes organizer
Tough Domains - Tough Domains is platform that provides tools to manage internet domains, domain insights, and domain monetization.