Note that these are not all FOSS.
-
Photo Editing:
- GIMP
- Krita
- Paint.NET
-
Video Editing:
- DaVinci Resolve
- CapCut
- Shotcut
-
Audio Editing:
- Audacity
- Cakewalk
- GarageBand
-
3D Graphics:
- Blender
- Spline
- Rumba
-
Office Software:
- LibreOffice
- Microsoft 365 Free Apps
- WPS Office
-
Antivirus Software:
- Windows Security
- Avast Free Antivirus
- Malwarebytes
-
Productivity Tools:
- Bitwarden
- VSCodium
- PDF-XChange Editor
- 7-Zip
- OBS Studio
- LanguageTool
Some of us use FOSS because of access to the source and the benefits of an all FOSS system. Not because it’s zero cost. This list is just zero cost and some happen to be FOSS.