Customize the Steam Client with themes and plugins using the Millennium open-source framework.
The Best decky-loader Alternatives in 2026
Looking for something like decky-loader? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 24 are open source.
decky-loader loads plugins on Steam Deck, with documentation and sponsorship information for the project.
Top picks at a glance
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Millennium | — | Yes | Linux, Windows |
| 2 | great-on-deck-search | — | Yes | Browser extension |
| 3 | Widescreen Fixes Pack | — | Yes | — |
| 4 | Steam Bridge | — | Yes | Linux, macOS |
| 5 | Steam Currency Converter | — | Yes | — |
| 6 | Adwaita-for-Steam | — | Yes | Linux, Windows |
| 7 | TcNo-Acc-Switcher | — | Yes | Linux |
| 8 | SDD GUI | — | Yes | Linux, macOS, Windows |
| 9 | Steam Rom Manager | — | Yes | — |
| 10 | SteamAchievementManager | — | Yes | — |
All decky-loader alternatives
great-on-deck-search shows Steam Deck verification status and ProtonDB medals in the Steam Store.
Widescreen Fixes Pack provides plugins to add or improve widescreen resolutions in supported games.
Connect Minecraft players through Steam P2P with this network proxy mod, without port forwarding or public IPs.
Convert Steam prices between local currencies with this browser utility.
Adwaita-for-Steam applies a GNOME-inspired skin to Steam, with installation notes about themes resetting after updates.
TcNo-Acc-Switcher quickly switches between accounts for Steam, Battle.net, Epic Games, and other services.
Manage Steam game depots and select older game versions with this DepotDownloader interface.
Import multiple games and manage their artwork in Steam with Steam ROM Manager.
SteamAchievementManager manages achievements for Steam games through a lightweight portable application.
Download Steam Workshop items through a graphical interface for SteamCMD.
Change and organize custom artwork in a Steam library using the Steam Art Manager utility.
Retrieve Steam Workshop items using this downloader project, which provides a dedicated interface for workshop files.
A linux utility for generating 2FA codes for Steam and managing Steam trade, market, and other confirmations.
Watt Toolkit is an open source cross-platform toolbox for Steam, with most features requiring Steam to be installed.
BoilR synchronizes games from other platforms into a Steam library for unified launching.
DepotDownloader downloads Steam depots from a console application built with SteamKit2 and .NET 8.
Millennium supports creating and managing Steam client modifications through an open source, low-code framework.
Install and manage games through Open Game Installer, a platform built with developers in mind.
RenoDX is a toolset for modding DirectX games, with support for replacing shaders, injecting buffers, and adding overlays.
AntiMicroX maps keyboard buttons and mouse controls to a gamepad for playing games without gamepad support.
Adjust ZeroTier network interface settings on Windows to help multiplayer games work over local networks.
Web Man Mod adds extended services to PS3 consoles, including web server and FTP functions.
hakchi2 CE lets users add more games to NES and SNES Classic Mini systems.
Alternatives to similar tools
What is the best alternative to decky-loader?
Are there open-source alternatives to decky-loader?
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative
























