Microsoft Office Powerpoint
Commercial
Microsoft PowerPoint is a presentation program currently developed by Microsoft.
Google Drive - Slides is to create, edit, and collaborate with others on presentations.
iWork - Keynote
Commercial
Keynote for Mac, iOS, and iCloud lets you make dazzling presentations.
Reveal.js
Open Source
Reveal.js is a framework for easily creating beautiful presentations using HTML.
Compare LibreOffice - Impress with alternatives
Compare Microsoft Office Powerpoint and LibreOffice - Impress and decide which is most suitable for you.
Compare iWork - Keynote and LibreOffice - Impress and decide which is most suitable for you.
Compare Google Drive - Slides and LibreOffice - Impress and decide which is most suitable for you.
Compare Reveal.js and LibreOffice - Impress and decide which is most suitable for you.