1
Also covers game, game utilities, and open source
Customize the Steam Client with themes and plugins using the Millennium open-source framework.
Alternatives
The Best Millennium Alternatives in 2026
24 alternatives0 free · 23 open source
Looking for something like Millennium? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 23 are open source.
About Millenniumsteambrew.app
VisitMillennium supports creating and managing Steam client modifications through an open source, low-code framework.
Top picks at a glance
First suggestionMillenniumCustomize the Steam Client with themes and plugins using…Another optionSteamAchievementManagerSteamAchievementManager manages achievements for Steam…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Millennium | — | Yes | Linux, Windows |
| 2 | SteamAchievementManager | — | Yes | — |
| 3 | steamguard-cli | — | Yes | Linux |
| 4 | Greenlight | — | Yes | Linux, macOS, Windows |
| 5 | chiaki-ng | — | Yes | Android, Linux, macOS |
| 6 | DLSS Swapper | — | Yes | — |
| 7 | Dualshock Tools.github.io | — | Yes | Linux |
| 8 | Hb Appstore | — | Yes | Linux, Windows |
| 9 | Jackbox Utility | — | Yes | — |
| 10 | Decky Loader | — | Yes | Linux, Web |
All Millennium alternatives
2
Also covers game, game utilities, and open source
SteamAchievementManager manages achievements for Steam games through a lightweight portable application.
3
Also covers game, game utilities, and open source
A linux utility for generating 2FA codes for Steam and managing Steam trade, market, and other confirmations.
4
Also covers game, game utilities, and open source
Greenlight provides an open-source client for Xbox's cloud play service and home streaming.
5
Also covers game, game utilities, and open source
Next-Generation of Chiaki (the open-source remote play client for PlayStation)
6
Also covers game, game utilities, and open source
DLSS Swapper downloads, manages, and swaps DLSS, FSR, and XeSS libraries to update or change graphics upscalers.
7
Also covers game, game utilities, and open source
Dualshock Tools provides software for configuring and managing DualShock controller features through a web interface.
8
Also covers game, game utilities, and open source
Homebrew App Store provides a graphical interface for downloading and managing open-source homebrew apps.
9
Also covers game, game utilities, and open source
Install patches and launch Jackbox titles from one companion application for managing the games.
10
Also covers game, game utilities, and open source
Decky Loader adds plugin support to Steam Deck, with plugins for customization and other features.
11
Also covers game, game utilities, and open source
Connect Minecraft players through Steam P2P with this network proxy mod, without port forwarding or public IPs.
12
Also covers game, game utilities, and open source
Convert Steam prices between local currencies with this browser utility.
13
Also covers game, game utilities, and open source
Adwaita-for-Steam applies a GNOME-inspired skin to Steam, with installation notes about themes resetting after updates.
14
Also covers game, game utilities, and open source
TcNo-Acc-Switcher quickly switches between accounts for Steam, Battle.net, Epic Games, and other services.
15
Also covers game, game utilities, and open source
Manage Steam game depots and select older game versions with this DepotDownloader interface.
16
Also covers game, game utilities, and open source
Import multiple games and manage their artwork in Steam with Steam ROM Manager.
17
Also covers game, game utilities, and open source
Download Steam Workshop items through a graphical interface for SteamCMD.
18
Also covers game, game utilities, and open source
Change and organize custom artwork in a Steam library using the Steam Art Manager utility.
19
Also covers game, game utilities, and open source
Retrieve Steam Workshop items using this downloader project, which provides a dedicated interface for workshop files.
20
Also covers game, game utilities, and open source
Watt Toolkit is an open source cross-platform toolbox for Steam, with most features requiring Steam to be installed.
21
Also covers game, game utilities, and open source
BoilR synchronizes games from other platforms into a Steam library for unified launching.
22
Also covers game, game utilities, and open source
DepotDownloader downloads Steam depots from a console application built with SteamKit2 and .NET 8.
23
GGNTW
ggntw.com/steamAlso covers game and game utilities · same kind of website
Download modifications from the Steam Workshop through GGNETWORK’s workshop downloader.
24
Also covers game utilities and open source
great-on-deck-search shows Steam Deck verification status and ProtonDB medals in the Steam Store.
No alternatives match this filter.
Alternatives to similar tools
Steam Bridge24 alternativesSteamAchievementManager24 alternativessteamguard-cli24 alternativesgreat-on-deck-search24 alternativesDecky Loader24 alternativesAdwaita-for-Steam24 alternatives
What is the best alternative to Millennium?
Based on features, tags and platforms, the closest alternatives to Millennium are Millennium, SteamAchievementManager, and steamguard-cli.
Are there open-source alternatives to Millennium?
Yes: Millennium, SteamAchievementManager, steamguard-cli, and Greenlight.
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