PCSX-Redux is an open source fork of PCSX that drops the plugin system for one monolith, then adds a GDB server, Ghidra hooks, a Lua interface and a VRAM viewer. There is no version number: the builds ship as rolling snapshots of the main branch.

Vita3K is an open source PS Vita emulator written in C++, shipping nightly builds for Windows, Linux, macOS and Android. More than half the tested titles are marked playable.

An open source 3DS emulator taken over by its community, assembled from two branches that each kept the earlier code moving, published under GPL-3.0, with builds for Windows, macOS and Linux and a release rhythm that has stayed alive.

An open-source emulator for GameCube and Wii that runs those games on a computer in full HD 1080p, works with ordinary PC controllers and supports netplay. The current build is 2609a.

Steam is Valve's PC game publishing and community platform: the store is officially described as carrying around thirty thousand titles, while community, workshop, streaming and chat all live inside the same free client.

A free open source tool for importing games in bulk and managing cover art, covering emulator ROMs and games from other platforms, with fuzzy matching and more than a hundred presets built in and builds for Windows, macOS and Linux.

The first PlayStation left behind a catalogue nobody can count. Connecting the original hardware to a modern television does not do it justice. DuckStation rebuilds the presentation: resolution scaling, texture filtering, geometry correction and widescreen patches.

EA App replaced Origin as the only official entry point on Windows: rewritten install pipeline, visibly faster downloads, a modern interface, subscription access to a large library and cloud saves, free on both desktop platforms.

Heroic pulls the store libraries into a single window: sign in once per store, browse and install from one list, keep updates and cloud saves in one place, and set compatibility layers from a dropdown instead of a command line, on three desktop systems and on handhelds.

GeForce NOW is NVIDIA's cloud streaming service: games run on RTX 5080 class servers, your Steam and Epic libraries stay yours, and a free tier opens with one hour sessions.

DeSmuME is the oldest open-source emulator for the handheld with two stacked screens, maintained since 2006 and available for the three desktop systems. A scaling factor pulls 3D scenes far past the native 256x192, a dynamic recompiler covers slow machines, and the frame-accurate toolchain with a scripting debugger is what makes it a workbench rather than a toy.

Riot Client is the publisher's own launcher and, since 2026, the single entry point for all of its PC titles. A few megabytes to install, one sign-in for the whole library, a click at the top right to switch games, and downloads, patches and per-game installs all handled inside it. Free on Windows 10 and later and on macOS, with an account the only requirement.

A game accelerator built on its own data centres and leased international links, handling nothing but game traffic while ordinary browsing is left alone. It covers computers, consoles, handhelds and phones, is free for domestic servers, and charges a membership for servers abroad after a trial.

RetroArch is an open-source frontend that emulates nothing by itself: it drives libretro cores, one per machine, so the interface, the gamepad mapping, the saves and the picture settings are configured once. The picture filters, save states, rewinding and netplay live in the frontend and work with any core.

Battle.net keeps a whole library of Blizzard games behind one sign-in, patches them in the background, syncs progress across machines and carries the friends list, voice chat and two-factor login inside the same window.