Excellent free software.

Laptop

• Model: MSI GT70 0NC (2012).
• OS: EndeavourOS (Arch), Windows 10.
• CPU: Intel Core i7-3610QM @ 2.30㎓.
• GPU: NVIDIA GTX 670M 3㎇ GDDR5.
• RAM: 12㎇ (3x 4㎇ DDR3).
• SSD: 64㎇.
• HDD: 750㎇ 7200 RPM.
• Keyboard: Dragon War: Dark Sector.
• Mouse: Razer Deathadder V2
  

Linux

• Distro: EndeavourOS
• Desktop: xfce
• File manager: Double Commander
• Firewall: gufw
• Screensaver: xscreensaver
• Terminal: yakuake

Internet

• Browser: Vivaldi
  ↳︎ Ad blocking: uBlock Origin
  ↳︎ Convenience: Cookie AutoDelete, Enhancer for YouTube™, LanguageTool Plus, TransOver, Web Scrobbler
• Ad blocking: hBlock
• Chat: Telegram, [matrix]
• Cloud storage: MEGA
• Email: Vivaldi Webmail, Thunderbird, Birdtray
• Handwritten notes [handy PDF editor]: Xournal++
• Password manager: bitwarden
• P2P: Soulseek, Deluge
• Remote control: KDE Connect
• Search: Kagi Search, DuckDuckGo
• Translate: Deepl Translate
• YouTube: invidio.us

Utilities

• Calculator: Qalculate!, GeoGebra, WolframAlpha, Symbolab, (wxMaxima)
• Code: Visual Studio Code, Geany
• Eye health: Redshift, (Windows: f.lux)
• Image editing: Photopea, (Krita, Inkscape)
• Macros: Autokey, (Windows: AutoHotkey)
• Media player: mpv, Clementine
• Text: LyX, LibreOffice
• Video editing: kdenlive, (Natron, Flowblade, LosslessCut)

Smartphone

Model: OnePlus One (2014).

LineageOS ^(18.1) + microG. No Google account needed!

F-Droid app catalogue:

• 2FA: Aegis Authenticator
• Calendar: Simple Calendar
• Chat: Nekogram X (Telegram)
• Chess clock: Simple Chess Clock
• Eye health: Red Moon
• Flash cards: Anki
• Gallery: Camera Roll
• Keyboard: FlorisBoard
• Notes: Simple Notes
• Podcast player: AntennaPod
• Remote control: KDE Connect
• Video player: mpv-android
• YouTube: NewPipe

Smartphone

Aurora Store app catalogue:

• Ad blocking: Nebulo + AdGuard DNS IPs (94.140.14.14, 94.140.15.15)
• Browser: Vivaldi
• Cloud storage: MEGA
• Dictionary (offline): Livio , Linguee, WikiMed
• Email: BlueMail
• File explorer: Cx File Explorer
• Graphing calculator: GeoGebra, Desmos
• Music player: Musicolet
• Pomodoro: Productivity Challenge Timer
• Screensaver, live wallpaper: xscreensaver
• Scrobbler: Pano Scrobbler
• Translate: DeepL, Microsoft Translator

Smartphone

apkpure website:

• Calculator: MathAlly

Miscellaneous

• Chess: lichess
• Comedy: South Park
• Library: Z-Library, Library Genesis