Neko

Kirby with headphones

Utility Zone

Free programs I think are interesting or handy. Also doubles as a reference for me. Please let me know of anything else I could add in the comments at the bottom.

A MegaCollection

Based on Windows OS

Find more at tinytools.directory.

File Types and Protocols

Programs

Terminal

Utilities

Unchecky Skips extra programs in installers.
MiniBin Recycle Bin management in the system tray
SuperF4 Shortcut to kill programs.
AltSnap Fork of AltDrag that adds snapping to edges along with using Alt to move windows.
CapsLock Indicator Self-explanatory.
Display Driver Uninstaller Useful when updating graphics card.
Steam Cleaner Deletes leftover data from games.
AutoHotkey Programmable keybinds.
MacType (Github) Renders system fonts like how Mac does.
BetterDiscord Adds themes and plugins, including tabs.
Ludusavi Backup game saves. I use it as a Playnite extension.
Microsoft PowerToys Some handy utilities.
Remove Empty Directories (RED) Clean up empty folders.
Link Shell Extension Create Linux-style symbolic links from the shell.
Syncthing SyncTrayzor (Github) Decentralized file synchronization.
Sidebar Diagnostics Quick system information access.
WinCompose A compose key to write special characters.
SpeedyFox Database optimizer for browsers and email clients.
Moonlight Open-source client for NVIDIA GameStream.
Sunshine Open-source self-hosted game stream host for Moonlight.

Firefox Extensions

Visual Studio Code Extensions

Code Spell Checker, HTML / XML / RSS link checker, HTML CSS Support, Live Preview, open in browser, Path Intellisense, PDF Preview, Prettier - Code formatter, VS Code Pets

Paid Programs

Interesting

I do not use these, but I think they're neat, so I'm shouting them out here.

Browsh Modern text-based browser that can run in SSH.
Beaker Browser Peer-to-peer Web browser.
WACUP (WinAmp Community Update Project) Patch Winamp.
Vim Advanced text editor.
Doom Emacs GNU Emacs framework.
PortableApps Portable app manager.
Decker (Itch.io) Basically a spiritual sequel to Mac's HyperCard.
ReShade Post-processing injector for games and video software.
Retroshare Peer-to-Peer network for file sharing and messaging.
Soulseek File sharing network.
Nicotine+ Alternative client for Soulseek.
Universal Hint System Handy hints for adventure games and more.
ROM Properties Adds ROm files supprrt to file browsers, from viewing properties to image previews.

Suggest more in the comments!