The Oct 2026 ranking of open-source business software
If you are shopping for business software you can actually own, this guide walks the shortlist.
8 open-source business projects made the cut this week. Install counts come straight from our provisioning records.
Top to bottom
| # | App | Category | Installs | From |
|---|---|---|---|---|
| 1 | Odoo Full ERP: CRM, accounting & inventory | Business | 74 000 | €0.092/hr |
| 2 | Firefly III Personal finance manager & budgeting | Business | 68 000 | €0.023/hr |
| 3 | Invoice Ninja Invoicing, payments & billing | Business | 32 000 | €0.023/hr |
| 4 | Documenso Open-source document signing | Business | 21 000 | €0.046/hr |
| 5 | ERPNext Free & open-source ERP — accounting, CRM, inventory, HR, manufacturing & more | Business | 5 800 | €0.092/hr |
| 6 | Dolibarr ERP & CRM for companies and foundations — invoices, orders, stock, agenda, accounting | Business | 3 100 | €0.046/hr |
| 7 | Ever Gauzy Open business management platform — ERP, CRM, HRM, ATS & project management in one | Business | 1 900 | €0.092/hr |
| 8 | ERPClaw AI-native ERP — accounting, inventory, sales & purchasing driven in plain language | Business | 640 | €0.046/hr |
Reading the field
Odoo
Odoo covers run recruitment stages without demanding a manual. It runs comfortably on 4 vCPU / 8 GB here. Typical users: HR teams. Start here if you want the safe pick.
Firefly III
Its daily work — track spending is what Firefly III does best. It runs comfortably on 1 vCPU / 2 GB here. If you are individuals and families, start here. Close second, and some teams prefer its take on the problem.
Invoice Ninja
Teams pick Invoice Ninja when they need the basics done well. Spec: 1 vCPU, 2 GB RAM, 25 GB disk. A niche pick that earns its place.
Documenso
Teams pick Documenso when they need the basics done well. Plan for 2 vCPU and 4 GB of RAM. A niche pick that earns its place.
Choosing a server
None of these need a big machine. Budget roughly €0.092/hour for the largest spec in the table (peak 4 vCPU, 8 GB), and less for the rest. The install wizard pre-selects the right plan for you.
Generated 2026-10-22 from live catalog data · all guides