We replaced our own inventory system.
You can have it.
From purchase to e-invoice, with several eBay accounts and your WooCommerce shop in one place — on your own server, without Windows and without licence fees.
We have traded industrial machinery and used goods since 2003. For twenty years that ran on off-the-shelf inventory software — and on a Windows server that wanted looking after.
Not a toolkit and not a everything-for-everyone suite — the scope a business this size actually needs.
The difference between a homemade solution and software you actually invoice with.
ZUGFeRD as PDF/A-3 with embedded XML to EN 16931. In Germany, businesses already have to be able to receive e-invoices; the duty to issue them is being phased in — here it is already in place.
Gapless number ranges, credit notes instead of deletion, logged changes. What was once a document stays a document.
Export documentation for non-EU countries, entry certificate for the EU, proof of delivery — as a PDF or photo on the order. If the proof the tax exemption rests on is missing, the order shows up red in the list. Before the auditor asks for it.
Used goods bought from private sellers shown correctly — on the invoice and in the handover to accounting. The point where the large vendors stop.
Save an eBay listing with its description, item specifics and every image in one click — as a time-stamped PDF, sent to your own mailbox as well. If a buyer complains months later, what counts is what the listing said back then.
Your own server, your own database, no shared tenancy. If you leave, you get a full export and your document archive.
No cloud where you share a database with other traders: your own machine, your own database, only your data — set up and operated by us. On your own hardware if you prefer.
Linux, Node and PostgreSQL. All free, nothing expires.
2 cores, 4 GB RAM, 40 GB SSD, Ubuntu or Debian. No server cabinet, no air conditioning.
Encrypted nightly, retention as agreed, restores tested monthly.
Uptime and backup age feed into our monitoring — we notice before you do.
eBay’s authorisation expires after 18 months. The Wawi warns you 30 days ahead, by email and on the start page.
Including when the e-invoicing standard changes. That is part of maintenance.
Document templates, number ranges, channels, fields. Your installation, your rules.
No tool without instructions. The handbook lives inside the application — currently in German.
Lists, orders and documents fit a small screen. Photos go onto an article straight from your phone.
Passkeys or two-factor, roles per user, read-only for your tax advisor, signed out after two hours idle.
We only get in when you generate a support code. Visible notice during the session, logged, disconnectable at any time.
Running the system needs no AI. Address recognition can use one — with your own key, otherwise it works without.
We would rather tell you up front what is missing than surprise you with it after you buy.
One hour in which we say honestly whether the Wawi suits your business. If it does not, we both save the time.
We look at your current software and your numbers: articles, customers, documents, channels. That becomes the migration plan.
Machine, domain, certificate, master data, number ranges, document templates in your layout, channels connected, old data imported.
Both systems run side by side until the numbers match. Switching is then a decision, not a leap.
Tell us briefly what you trade in and through which channels. We will reply with an honest assessment — even if it is “probably not”.
hallo@avanton.dePricing on request — one-off setup including data import, then maintenance and updates as a monthly fee.