Furnace Client
A Minecraft launcher built for speed.
Furnace gets your instance ready before you press play. Game files are verified once and remembered, missing assets download eight at a time, and the launcher picks the right Java runtime and memory settings for every version. The first launch of a version still has to download and check everything. After that, starting the game again is quick.
Windows 10 and 11 · 3.99 a month · Cancel any time · 14 day refunds
- Loaders
- Vanilla and Fabric
- Downloads
- 8 in parallel
- File checks
- Once, then cached
- Telemetry
- None
Performance
Where the speed comes from
Most of the waiting in a launcher comes from checking, downloading, and setting up files that are already on your disk. Furnace is built to do that work once and remember it, and to spend your first launch on the download rather than every launch.
Staged before you click play
When you pick a profile, Furnace reads its version metadata, checks the libraries and assets, and gets the Java runtime ready in the background. When you press play, there is very little left to do.
Verified once, then remembered
Game files are hashed the first time and recorded with their size and last modified time. Later launches only re-check a file if it actually changed, which is why the second start of a version is far quicker than the first.
Downloads run side by side
Missing assets download eight at a time instead of one by one. On a fresh install that turns a long queue into a short one, and you can watch the progress stage by stage.
Java and memory handled per version
Each Minecraft release needs a specific Java version. Furnace installs the matching Temurin runtime when it is missing, allocates the memory you chose, and applies the JVM flags for the preset you picked.
Exact times depend on your PC, your connection, and how much content a version needs. A version you have never launched before always has to download and verify its files once. Furnace does not publish a benchmark number because we would rather show you the real behavior on your own machine.
Features
What is in the launcher
Furnace covers the parts you use every day: launching, mods, and knowing where your time went.
Browse and install mods in the app
Search mods from Modrinth without leaving the launcher and install them with one click. Results match your instance's Minecraft version and loader, and every download is hash checked before it lands in your mods folder.
Import modpacks
Point Furnace at a modpack file and it builds a new instance from it. The pack's files download, get checked, and its overrides unpack into the instance folder with the loader and version read from the pack.
Groups and drag and drop
Move instances between groups and drop them exactly where you want in the list. Collapse groups you are not using, and Furnace remembers the layout for next time.
Playtime split into active and AFK
Furnace watches for input and counts the difference, per day and per instance, for the game and for the launcher itself. No rounded numbers and no guesswork about where the hours went.
Sign-in that keeps tokens out of files
Sign in with the Microsoft account you already play with. The session goes into Windows Credential Manager, and signing out removes it from your PC.
Six themes in one click
Pick from six built-in themes, from near-black monochrome to a light layout, and Furnace restyles every screen at once. The flame stays orange.
Instances
Instances, in groups that make sense
Make a group for servers, one for modpacks, or one for the pack you are testing. Drag instances between groups and drop them exactly where you want in the list. Groups collapse when you are not using them, and the layout is saved for next time.
Mods
Find mods without leaving the app
Results come from Modrinth and match your game version and loader. Category and sort filters are there when you need them, installs are hash checked before they land in your mods folder, and a toggle switches any installed mod on or off without deleting the file.
Playtime
Playtime that splits active from AFK
Furnace watches for input and counts active and AFK time separately, for the game and for the launcher. You get daily bars, totals per instance, and a session timer while you play.
Pricing
One subscription, two ways to pay
Every plan includes the full launcher. Pay monthly for flexibility, or pay for a year and get about two and a half months free.
Monthly
3.99 USD / month
- Every launcher feature
- Cancel any time
- Billed monthly in advance
Yearly
34.99 USD / year
- Everything in the monthly plan
- About 2.92 a month
- Cancel any time
Prices are in US dollars and include the launcher only; you still need a Minecraft account. Charges are refundable within 14 days. Read the Refund Policy for the details.
Get Furnace
One installer, about 4.5 MB. Furnace takes care of Java, game files, and mods, so you can pick a version and play. The first launch of a version downloads and checks its files once.
Windows 10 and 11, 64-bit · v0.1.0 · 3.99 a month, cancel any time
The build is not code-signed yet, so SmartScreen may warn on first run. You can check the installer's hash against the release page, or build it yourself from source.
FAQ
Questions people actually ask
How much does Furnace cost?
It is $3.99 a month, or $34.99 a year if you would rather pay once. The yearly plan works out at about $2.92 a month. Both plans include every feature, and you can cancel whenever you want.
Do I get a refund if I change my mind?
Yes. We refund any charge within 14 days of the payment date, no questions asked. After that, cancelling stops future charges and your access runs to the end of the period you already paid for.
Do I need to sign in to use it?
You can install the launcher, set up instances, and browse mods without signing in. Launching the game and playing online needs a Microsoft account that owns Minecraft: Java Edition.
Which Minecraft versions and loaders work?
Vanilla and Fabric, from 1.8.9 through 1.21. Forge and NeoForge are planned but not shipped yet. If a profile needs them, Furnace tells you before it starts instead of failing halfway through a launch.
Do I need Java installed?
No. Furnace works out which Java version each Minecraft release needs and installs Eclipse Temurin for you if your PC does not already have a matching one. You can also point it at a Java build you already trust.
How does Microsoft sign-in work?
You sign in with the same Microsoft account you play Minecraft with, in a sign-in window inside the launcher. The session token goes into Windows Credential Manager and signing out deletes it. Furnace never sees or stores your password.
Can I import modpacks?
Yes. Pick a modpack file and Furnace builds a new instance from it. The pack's files download and get checked, its overrides unpack into the instance folder, and the loader and version come from the pack itself.
Does Furnace send any data anywhere?
No analytics, no telemetry, and no crash uploads. Its network access is limited to what is needed: Microsoft and Xbox Live for sign-in, Mojang for game files, Modrinth for the mod browser, and Adoptium for Java. Launch logs stay on your PC.
Where does it keep my files?
In your Windows app data folder. Every instance gets its own directory for saves, mods, and settings, and you can export a JSON snapshot of your launcher settings to back up or sync yourself.