Sales and purchases
Several product lines, units and price. Output or input VAT is worked out for you and stock moves with the operation.
Free and open source
The ERP that doesn't ask you to be an accountant
Jot down what you sell and what you buy, the way you would tell someone. Stock, VAT and your balance work themselves out.
Demo with sample data · no sign-up · no card
oliverp.4oli.com
February Balance
€4,820
Income €18,420 · Expenses €13,600
VAT Balance Q1
-€1,096
In: €2,140 · Out: €1,044
February Projection
€19,840
Day 26/28
Revenue Evolution
Period total: €18,420
7 days30 days90 days
The whole business
Six modules, all included
Everything you see is in the application from day one.
Enter the ERPInventory and stock
Stock per product, valued at cost and at sale price, profit per unit and how many days you have left before running out.
Transactions
The income and expenses that are not a clean sale, as a journal or as a list, with the amount and the VAT kept apart.
Dashboard and forecast
Balance for the month and the quarter, VAT balance split between input and output, and a forecast of how the month will close.
History
Everything you have recorded grouped by month, quarter and year, so you can look back without building a spreadsheet.
Your own plugins
Does your business have an odd rule? Write it in a repository of your own, review it and enable it on your project.
No manual needed
You fill in the form like someone writing a sale down in a notebook. Nobody asks you for a ledger account or a journal entry.
Free and open source
No plans, no limits and no card. The code is published and you can run it on your own server.
martinezharo/oliverpYour agents use it too
Every screen has a documented endpoint behind it. Give the contract URL to your GPT, to n8n or to Make and it sorts itself out.
oliverp.4oli.com/api/v1/openapi.jsonNo sign-up
Come in and touch everything. The data is made up.
A sample business with sales, stock and history already loaded. Create and edit anything you like: nothing is saved.