Global Master
EURTotal value
1,240.00
Items worth
780.00
Wallet
460.00
Portfolio value, history17.9%
Inventories, trade locks, mass trading, trade offers, and buying and selling on the Steam Market. One account or several hundred, all on one screen. It runs on your PC, so your passwords and 2FA secrets never leave it.
No account, no licence key, no activation. Download the file and open it. Windows 10 or 11.
One account or a hundred. Organise, value, trade and sell them all from the same screen, with no browser tabs to juggle.
Group accounts into environments and folders. View one account, roll up an environment, or see them all in the global master.
Every item with its live market value and the exact date each trade lock lifts. Switch between CS2 and TF2 in one click.
Move items between your accounts or out to any trade link, one at a time or in bulk. Every offer is confirmed for you, with a live progress bar.
See every incoming and outgoing offer across all accounts on one screen, with each side priced. Accept, decline or cancel in batches.
Place buy orders straight from the dashboard. Search any item, pull its live price, and SSIM confirms the order. It rests until it fills.
List at the lowest price, an undercut, or a fixed net payout. You see exactly what lands in your wallet before anything goes live.
Track every open buy and sell order across all accounts and cancel any of them in place. Queue a mass buy that checks balances before it runs.
Every refresh records your item worth and wallet balance, so the curve tracks your real holdings per environment and across everything.
Casket contents are read and counted, not left as one opaque item. Move things in and out, and SSIM checks the move actually happened.
Assign an HTTP or SOCKS proxy to any account or environment. A built-in checker shows its exit IP, country and ping.
Lock the app behind a master password. Everything SSIM stores is encrypted with it, so a copied folder is useless without it.
SSIM checks for a newer release on launch and installs it before it starts, after checking the file is genuine. You never download anything by hand.
Open SSIM and every account is right there. Drill into one account, roll up an environment, or read a global total across everything.
SSIM pulls every sent and received offer from all your accounts into one list. See what each side gives and gets, priced from your cache, and act on them without opening Steam.
SSIM records your total worth and wallet balance on every refresh, so the curve reflects your real holdings, priced straight from the Steam Market.
Search an item, pull its live price with one click, set your amount, and SSIM places the order and confirms it. Selling works the same, with your full proceeds shown up front.
You are handing this app your Steam accounts, so here is plainly how they are looked after.
Your passwords and 2FA secrets go to Steam when you sign in, and nowhere else. No server of ours is involved.
You set a master password on first launch, and everything sensitive on disk is encrypted with it. Someone copying the folder gets nothing usable.
No sign-up, no tracking, no usage reports. SSIM talks to Steam, to CSFloat if you turn it on, and to GitHub to check for updates.
It runs on your own computer and is not reachable from the internet. Putting it on your network is something you have to deliberately turn on.
The 2FA step that approves a trade or a listing happens locally. Your authenticator secrets are only ever used on your own PC.
Every account gets its own connection, and its own proxy if you set one. Sessions do not mix, so one account cannot affect another.
SSIM is open source. You do not have to take any of this on trust, and you do not have to be a programmer to have someone check it for you.
Every release is built automatically from the public source and published with a fingerprint you can compare. How to check it.
One file from the releases page. No installer, no sign-up, no key. Put it in its own folder and open it.
It locks your saved accounts. Choose it on first launch and keep it safe, because there is no way to reset it.
Sign in with a QR code, or drop in your .maFile files so SSIM can confirm trades for you. Bulk import if you have many.
Refresh inventories, trade, buy and sell from one place. Updates install themselves.
The longer version, one step at a time: read the getting started guide.
Written for people who want to use SSIM, not read its source. Plain language, no jargon.
Download, first launch, choosing a master password, and what each folder is for.
The three ways in, which one lets SSIM confirm trades, and how to import a lot at once.
Sending items, mass trades, handling offers in both directions, and auto-accept.
Buy orders, selling at the price you want, and tracking open orders across the fleet.
When you need them, how to assign them per account or environment, and checking they work.
Sign-in problems, rate limits, inventories that look wrong, and where the logs are.
I built SSIM because for personal use I had many accounts, and signing into them one at a time was taking my whole evening. Everything in it exists because I needed it myself.
I used SSIM on a daily basis, yet at this moment, due to personal reasons, I do not need SSIM anymore. It is being maintained purely for the community.
It is 100% free, 100% open source, and runs on donations only.
SSIM automates actions on Steam accounts, and Steam's Subscriber Agreement restricts automated access. Use it on accounts you own, and decide for yourself whether that trade-off suits you.
The software is provided as is, without warranty of any kind, under the Apache License 2.0. SSIM is an independent project and is not affiliated with or endorsed by Valve Corporation.
Download it, open it, and add your first account. If you get stuck, the guides and the Discord are both there.
Windows 10 or 11, 64-bit. Around 500 MB of disk. Free under the Apache License 2.0.
Yes, and it stays free. SSIM has never been sold, and it is now open source under the Apache License 2.0. There is no paid tier, no trial, and nothing held back.
None of them. During the closed beta a licence server limited access to invited testers. The beta is over and that gate is gone. Download it and open it.
Update to the current version and everything carries on. The licence check is gone, any licence files you still have are simply ignored, and your accounts, vault and history all stay where they are. Updates now come from GitHub. See coming from a closed-beta build.
Windows 10 or 11, about 500 MB of space, and the Steam accounts you control. You can sign in with a QR code from the Steam mobile app. If you add an account's .maFile, SSIM can also confirm trades and listings for you instead of you approving each one on your phone.
That is the right question to ask of any tool like this. Everything stays on your own PC, encrypted with a master password only you know, and none of it is ever uploaded. Because SSIM is open source, you or anyone you trust can check that this is true rather than believing a website.
In folders next to the app, on your own machine. Your accounts and their secrets sit in an encrypted vault protected by your master password. There is no cloud account and nothing to sync.
SSIM checks for a newer release when it starts and can install it before opening. It checks the file is genuine first and refuses anything that does not match, so an update cannot be swapped for something else.
Steam's Subscriber Agreement restricts automated access, and SSIM automates actions on Steam accounts. It uses the same public web endpoints your browser does. Use it on accounts you own, and make your own call on whether that suits you.
Yes. CS2 has the full set: inventory, trading and the Market. TF2 inventories are supported as a read-only view.
Yes, HTTP or SOCKS, set per account or for a whole environment. Each account uses its own connection, and a built-in checker shows the exit IP, country and speed of each one. See the proxies guide.