Must have GUI programs for scientists on Linux

I made this list when upgrading my Ubuntu laptop in 2016. As it might be useful to anyone on Linux and looking for (mostly) free and open source alternatives to commercial programs such as Adobe Ligthroom/Illustrator/Photoshop, I post it here for reuse.

Graphics and photography

'Display calibration and characterization' - DisplayCAL (free and open source)

'Photography workflow application and raw developer' - Darktable (free and open source)

'Image manipulation program' - GIMP (free and open source)

'Panorama photo stitcher' - Hugin (free and open source)

'Focus stacking program' - Zerene Stacker (commercial and proprietary)

'Image processing package for scientific image analysis' - Fiji (free and open source)

'Vector graphics software' - Inkscape (free and open source)

'Programming language and sketchebook built specifically for the visual arts' - Processing (free and opensource)

Backup

'Automatic backup' CrashPlan (commercial and proprietary)

Misc

'Reference managers' - Mendeley (free and proprietary) or Zotero (free and open source)

'Internet browsers' - Chrome/Chromium (free and open source) or Firefox (free and open source)

'File hosting' - Dropbox (free, but proprietary)

'Video chat and voice call services' - Skype (free, but proprietary)

'Multimedia player' - VLC (free and open source)

'Virtualization program' - VirtualBox (free and open source)

'FTP client' - FileZilla (free and open source)

'Email application' - Thunderbird (free and open source)

'Integrated development environment (IDE) for R' - RStudio (both free and open source, and commercial editions)

'Office suite' - LibreOffice (free and open source)

'Audio software for multi-track recording and editing' - Audacity (free and open source)

'Full-featured video editor' - Lightworks  (free and pro versions)

'3D creation suite' - Blender (free and open source)

'Jupyter notebook' - Jupyter (free and open source)

'Geographic information system' - QGIS (free and open source)