Tools here means finished programs: install, double-click, use. Libraries and frameworks that need you to set up an environment and write code to call them belong elsewhere. The range runs from the system level down to daily use: file managers, system tweaks, terminal emulators, command-line tools, file transfer, phone screen mirroring, downloaders, browser extensions, novel and comic readers, audio and video players.
A few of these also show up under Media and Entertainment. Both listings exist because the intent differs: that one is organised around watching and listening, this one around using the thing as a tool. Each project is stored once, so nothing is double-counted.
If you want something you can adopt today, start with the System Tweaks and File Managers subgroups. To find something that installs into a browser, go straight to Browser Extensions. If the problem is getting a photo off your phone and onto your PC, look at File Transfer and Screen Mirroring. The platform buttons below narrow the list to a single operating system.
