kdiff3
Beyond Compare
WinMerge
Meld
Araxis Merge
DiffMerge
P4Merge
Devart Code Compare
Vimcal
Cron
Morgen.so
Cal.com
TidyCal
zcal
Google Calendar
BeforeSunset
kdiff3
VimcalBeyond Compare - Beyond Compare allows you to compare files and folders.
Cron - Cron Calendar.
WinMerge - WinMerge is an open source differencing and merging tool for Windows.
Morgen.so - All-in-one Calendar, Tasks & Scheduler. Morgen is the single hub for everything that revolves around time management.
Meld - What is Meld? Meld is a visual diff and merge tool targeted at developers.
Cal.com - Cal.com (formerly Calendso) is the open source Calendly alternative.