The operating systemfor reselling.
Every order, every platform, every penny. One app built for how reselling actually works.
Opening in waves. The waitlist gets you in and into the beta Discord.
Windows desktop app. Your data stays on your machine.
Dashboard
Good evening, Alex
Your whole operation, at a glance.
Revenue & Profit
Dashboard
Good evening, Alex
Mark a row Awaiting return when a buyer wants to send it back.
Date & Time
--:--:--
———
Ascended Heroes - Booster Bundle
Sold
5
Revenue
£229.48
Profit
+£63.04
Runner up
Chaos Rising - Booster Bundle
All-time best
Ascended Heroes - Booster Bundle
Revenue & Profit
Sold-order trend view
Expenses Overview
This month's logged costs at a glance.
£417.78
£402.03
£183.38
£207.25/mo proj
£90.00
Anthropic - Claude Max
£35.01
Fuel
Recent Activity
Latest orders at a glance
O-019
Travis Scott AJ1 Low - Tropical Pink
Nike SNKRS · 01/06/2026
O-018
OP-13 Booster Box
eBay · 01/06/2026
O-017
Chaos Rising - Booster Bundle
eBay · 01/06/2026
O-016
Ascended Heroes - Booster Bundle
Amazon · 01/06/2026
Your whole operation at a glance, the moment you open it.
It opens on the Dashboard. Click through Orders, Sales, Inventory and Pre-orders to look around.
Some panels are simplified for mobile — view on a larger screen for the full desktop app.
See the whole picture
Analytics that answer the questions that matter.
The same charts that live inside the app. No setup, no spreadsheets, just your numbers the moment a sale lands.
Revenue & Profit
Sold-order trend view
Revenue & Profit
Watch the money move over time.
Every sale lands on one timeline by the date it actually sold. Pick a range from today out to all time, or set your own, and the same dates carry across every chart and table in the app.
- Revenue and profit on a single chart
- Set one date range, applied across every chart and table
- Presets from today to all time, plus custom ranges
Order Status
Know where every order stands.
Awaiting delivery, in hand, sold, problem or closed. The donut groups your whole book at a glance, so you can see what's tied up and what's done. Hover any slice for the exact count and share.
- Grouped straight from your live statuses
- Hover for counts and percentages
- Moves as your orders move
Order Status
192 total orders
192
Orders
- Awaiting Delivery2815%
- In Hand1910%
- Sold12967%
- Problem116%
- Closed53%
Profit by Platform
Top performing sources
Profit by Platform
See which sources actually pay off.
Profit totalled by where you sourced each item and ranked best first. Spot the retailers and drops worth chasing, and quietly drop the ones that aren't.
- Ranked by realised profit
- Your best sources, front and centre
- Order counts per platform on hover
Bulk edits & data
Fix a hundred rows in one pass.
Open the Bulk Edit grid and change prices, dates or statuses across your whole book like a spreadsheet. Then import a CSV, or export clean CSV and Excel whenever you need it.
Bring an existing spreadsheet straight in. Columns map themselves.
Pull any page back out as a clean, dated CSV.
Or a formatted multi-tab workbook, ready to share.
Make it yours
Set it up the way you work.
Pick the columns you care about and reorder them, switch on the pages and panels you actually use, and tune how the totals add up. Your layout, your rules.
Edit table view
Toggle visibility on/off and drag rows to reorder columns. Required columns stay visible.
Preferences
Changes save automatically as you toggle.
Optional pages
Turn on the extra views you want in the sidebar.
Inventory page
Adds an Inventory tab listing only Received and Listed orders.
Income page
Adds an Income tab for services, consulting and other side revenue.
Order Issues page
Moves Order Issue + Cancelled rows to their own page.
Display
Visual tweaks. None of these affect saved data.
Order images
Show product images on the Orders / Sales table.
Best Seller card
Show the Best Seller section on the Dashboard.
Table zoom
Resize table rows and text only.
Why it exists
The spreadsheet was never built for this
If you resell across platforms, you already know exactly where this breaks down.
Your numbers live in five different places
Orders in a spreadsheet, receipts in your email, payouts in the bank app, listings on each platform. Reseller OS pulls orders, expenses and income into one place so nothing slips through.
You never really know your profit
Fees, postage, refunds and returns quietly eat your margin. Reseller OS does the maths per item and across your whole business, so you see what a flip actually made.
Logging a sale is a chore you keep putting off
Built for how reselling works: multiple platforms, pre-orders, partial refunds, recurring costs. Entry is fast, so your records stay current.
Your tracker is just another tab to lose
When you're copping you already have a dozen Chrome windows, stealth sessions and bots running. A spreadsheet gets buried. Reseller OS runs as its own app, one click away on the taskbar.
What you get
Everything a reseller actually tracks
One app for every order, every platform, and every penny.
Order tracking that fits resale
Log buys and sales across every platform, with statuses for pending, listed, sold, returned, and order issues. Pre-orders and multi-line orders included.
Expenses and income, sorted
Track one-off and recurring costs, flag what's tax-deductible, and record income beyond sales. Clean records, ready when you need them.
Profit and analytics
Net profit, ROI, spend, and revenue calculated for you, after fees, postage, and refunds. See the months that worked and the items that didn't.
Local-first and private
A desktop app. Your data lives on your machine, not our servers, with automatic backups before every update so nothing is ever lost.
Import and export
Import your existing spreadsheet and export clean CSV or Excel whenever you need it. Hand it straight to your accountant.
Built with resellers
Built with resellers in the Discord. Request features, report bugs, and get early access to what ships next.
New features ship regularly. Discord gets them first. Join the waitlist to get in.
Coming soon
Your orders track themselves.
Connect your inbox and Reseller OS handles the full cycle. Buy confirmations add the order, delivery notifications mark it received, and sold alerts from your selling platforms mark it sold.
Thank you for placing an order with Pokémon Center!
Supreme: order confirmation
Your item sold: Chaos Rising ETB
Your parcel has been delivered
Chaos Rising ETB
O-071 · Pokémon Center UK
Travis Scott AJ1 Low
O-072 · Nike SNKRS
Supreme PAMP Gold Bar
O-073 · Supreme
Ascended Heroes Bundle
O-074 · Amazon
Buy confirmations add the order. Delivery notifications mark it received. Sold emails mark it sold. Join the waitlist
Coming soon
The Investment Tracker: see what your collection's worth, live.
Add the orders and stock you're holding as investments, and the Investment Tracker values them against real eBay sold listings, so you always know what your collection is actually worth.
Portfolio value
£4,820
+£1,290 · +37%
58 holdings · 18 sealed · 40 singles
£340
+£41 · +14%
£340
+£41 · +14%
£340 holding · £180 cost
past 3m
Investments
Turn your stock into a portfolio.
Flag any order or item you're holding as an investment. Reseller OS values it from recent eBay sold listings, so you see what your stock is actually worth today, not just what you paid.
- Add orders or current stock to Investments
- Valued from real eBay sold listings, matched to your card and grade
- Sealed, singles and graded slabs in one place
- Price history, value alerts and more
Want it the moment it lands? Join the waitlist
Coming soon
Singles and slabs get their own page.
Track every card by how you got it: bought, traded, or pulled straight from a pack. See your collection's live value at a glance, what you're holding, and the profit on every slab you've sold.
Flag a card as an investment, keep it in your inventory, and it moves to sales the moment it sells, no re-entering.
Holdings value
£1,291
▲ +62% vs cost
Unrealised gain
+£496
across 4 cards
Realised profit
+£285
from sales
Holdings
4
3 slabs · 1 raw
Charizard exPSA 10199/165Bought£180£340
Umbreon VMAX Alt ArtPSA 10215/203Bought£520£690
Pikachu exRaw238/191Pack pull£5£96
Monkey D. LuffyPSA 10OP01-001Trade-in£90£165
Mew exPSA 10232/091£210+£90Charizard exPSA 9199/165£240+£95
Lugia V Alt ArtRaw186/195£140+£48Monkey D. LuffyPSA 9OP01-001£130+£52Cost basis, eBay market value, grading log and more.
On the waitlist? You'll get it first. Join the waitlist
Privacy
Your data never leaves your machine.
Reseller OS is local-first. No account, no cloud. Your numbers stay on your machine and nowhere else.
Runs on your desktop
Fast, offline-friendly and always open in its own window. No login, no loading screens.
Your data stays local
Orders and finances live on your machine, never on our servers.
Backed up automatically
A full backup is taken before every update, so nothing is ever lost.
Join the waitlist
Stop running it on a spreadsheet.
Opening in waves. Join the waitlist for beta access and a place in the Discord. Free through the beta.
Windows only at launch·macOS and Linux later