Here are some of my favorites:
Audio editing: Audacity http://www.audacityteam.org/
Video editing: YouTube http://www.youtube.com
Collaboration content generation: Google Apps, including Doc, Sheets, Slides
Webcasts / animated presentations: Screencast-o-matic (http://www.screencast-o-matic.com)
Animated presentations: Knovio (http://www.knovio.com)
Template presentations: emaze (https://www.emaze.com)
Animation: Powtoon (http://www.powtoon.com)
LMS / VLE Solution: Moodle Cloud (http://www.moodlecloud.com) and Canvas https://canvas.instructure.com/login/canvas)
Adaptive Learning: Smart Sparrow https://www.smartsparrow.com/
Synchronous and Archivable Webinar Solution: Big Blue Button https://bigbluebutton.org/
Online classroom management: Edmodo https://www.edmodo.com/
Quiz and poll generators: ProProfs https://www.proprofs.com/
Free images: Pixabay https://pixabay.com/ Wikimedia
Photo editing: Cloud-based – Ipiccy https://ipiccy.com/
Photo editing: PicMonkey http://www.picmonkey.com
Image editing (must download): GIMP https://www.gimp.org/
Stripping out Word macros: Notepad++ (http://notepad-plus-plus.org )
HTML editor: SeaMonkey Project https://www.seamonkey-project.org/
Immersive Experiences: Thinglink http://www.thinglink.com/
Free Multiple Choice Test Maker: TestMoz https://testmoz.com/
