LibreOffice - Free office suite, open source, and compatible with .doc, .docx, .xls, .xlsx, .ppt, .pptx files. Updated regularly – download for free. Originally based on OpenOffice.org.
Solaris Sky Calendar - An astronomy calendar right in your pocket
Microsoft 365 - Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online
Sundial App - Sun & Moon times and alerts for iPhone, iPad, & Apple Watch
ONLYOFFICE - ONLYOFFICE is a complete office and productivity suite.
Alpenglow - Never miss a incredible looking sunrise or sunset again