Microsoft Outlook Calendar - Calendar is a time-management web application by Microsoft.
Stickies - Stickies is a PC utility written to replace Post-It-style notes left stuck to your monitor.
Calendar by Designs.ai - A complete calendar of all social media holidays.
Notezilla - Colorful & powerful sticky notes app for Windows & Phones.
Google Calendar - Spend less time managing your day & more time enjoying it
Scrawl - Scrawl is a notes taking and memo app that lets you keep track of the things that are important for you, like daily routine tasks, projects, reminders, calculations, or accountability of someone.