Bootstrap (free)
CSS framework
https://getbootstrap.com/
Canva (free)
image editor
https://www.canva.com/
Color-Hex (free)
color hex codes
https://www.color-hex.com/
Coolors (free)
color palettes
https://coolors.co/
Filezilla (free)
ftp client
https://filezilla-project.org/
Font Awesome (free/paid)
icons
https://fontawesome.com/
Golden Ratio Typography (GRT) Calculator (free)
perfect font sizes
https://grtcalculator.com/
Google Fonts (free)
web fonts
https://fonts.google.com/
Lorem Ipsum (free)
placeholder text
https://lipsum.com/
Loom (free)
screen recording
https://www.loom.com/
Notepad++ (free)
text editor
https://notepad-plus-plus.org/
Noun Project (free)
icons
https://thenounproject.com/
Snagit (paid)
screen capturing
https://www.techsmith.com/screen-capture.html
Unsplash (free)
photos
https://unsplash.com/