Itsycal is a tiny menu bar calendar. If you want, it will display your events as a companion to the Mac Calendar app. You can also create and delete (but not edit) events.
Alternative products to Day-O
9 alternative and related products to Day-O
Simple menu bar clock replacement w/ calendar for your Mac
9 Alternatives to Day-O
Display your day's schedule on a clock
Discover your next favorite thing
Product Hunt surfaces the best new products, every day. It's a place for product-loving enthusiasts to share and geek out about the latest mobile apps, websites, hardware projects, and tech creations.