If it's on this page, it's in the app. No "coming eventually".
Each item gets an auto ID (C-0001 for components, F- filament, P- PCBs, S- screws), a photo, its drawer, unit price, supplier part code and a stock counter you can nudge with the plus and minus buttons.
Add a storage unit, say "Drawer cabinet 6x3, bench left", and Parts Bin draws it as a grid. Click a drawer, pick a part, done. From then on the part's card reads Drawer cabinet 6x3 · #18, search matches on it, and the scanner can point you to it.
Bench left · 3 by 6 · 18 drawers
An order holds several products with quantities, prices and destination drawers, plus a tracking number and expected date. When the box arrives, mark it and every line is added to inventory (or merged into an existing part) in one go. Turn on auto-receive and it happens on the expected date by itself. Arrived orders can auto-archive.
Give a project a description, photos and a checklist with a progress bar. Allocate the parts it needs and they're taken out of stock; delete the project and they go back. Each card shows the project's total parts cost. Finished projects can auto-archive.
Export the parts list (BOM) from your PCB design tool, pick it in Parts Bin, review every row (add a buy link or photo), and Done adds them all as new items. Or drop them into an Order instead, so they only count once they arrive.
.xlsx or .csvparts-bin-bom-2026-09-20.csv
Open the Assistant tab and chat. It knows every item in your inventory, so it answers from what's actually on your bench. Ask what you're low on, what you can build right now, or what a project idea would still need.
/projects /parts /low /explain /setThe assistant is optional and off until you set it up in Settings. Everything else in Parts Bin works without it.
Assistant
Example conversation.
Barcode labels in small, medium or large for drawers, bags and spools. Select a few items, or the whole view, and hit Print labels.
Point your webcam at a label (or type its code) and Parts Bin jumps straight to that part and tells you which drawer it's in. Scanning runs on your PC, not in the cloud.
A floating calculator that does maths and live currency conversion, so you can price an order without leaving the app.
A small planner for what you're doing on the bench today. Because "solder the thing" lives next to the parts for the thing.
Add your own sidebar tabs, each with an image and its own ID prefix (Stencils becomes T-0001). Hide any built-in tab you don't use; items stay in the library and still show under All.
General, Appearance, Sidebar tabs, Materials and locations, Notifications, Data and backup, Updates. Your name and greeting, currency symbol, default low-stock threshold, density, resizable sidebar.
Presets rebuild the whole app: fonts, edges, backgrounds. Themes recolour it. Pick a base, override the accent with any hex colour, change the font, and choose comfortable or compact density. Hover a preset to see its colours on this site.
The 16 colour themes: Dark, Light, Paper, Snow, Mint, Sakura, Midnight, Ocean, Forest, Rose, Amber, Grape, Dracula, Nord, Sunset, Cyber.
There is no server. There is no account. Parts Bin can't upload your inventory because there's nowhere for it to go.
V4 stores everything in the app's own private storage. It survives restarts and updates.
Every save also writes a hidden recovery copy. If the main store ever comes back empty, the snapshot restores itself.
Settings, Data and backup, Backup to file. Move your inventory to another PC or keep a spare copy. Restore from the same screen.
An optional 4-digit PIN, with "require when the app opens". A casual lock so others can't just open it. Stored on this PC only.
V4 never checks for updates on its own. Settings, Updates has a button that opens the Releases page in your browser. Run the new installer and your data isn't touched.
Plain HTML, CSS and JavaScript inside a small native shell. Read every line on GitHub.
Windows 10 and 11. Free. No account. Counting down to 20 September.