Most lists of the best ERP software for small business start with the tools and skip the harder question: do you need an ERP yet? An ERP ties accounting, sales, purchasing, stock and HR into one system. That is powerful, but it also means weeks of setup. Many advisors suggest very small teams stay on accounting and inventory tools until the complexity justifies a bigger system.
Signs you are ready
- The same data is typed into three places.
- Stock levels in your sheet never match the shelf.
- Month-end close takes days because systems do not talk to each other.
- You need one version of the truth for sales, purchases and cash.
The free ERPs compared
| Tool | Best for | License | Stack | Stars | Updated |
|---|---|---|---|---|---|
| ERPNext | Most complete free ERP for small business | GPL-3.0 | Python (Frappe), MariaDB | 40,232 | Oct 2026 |
| Odoo Community | Huge app ecosystem, with edition limits | LGPL-3.0 (Community edition) | Python, PostgreSQL | 55,072 | Oct 2026 |
| Dolibarr ERP CRM | Light ERP for very small businesses | GPL-3.0 | PHP, MySQL/MariaDB/PostgreSQL | 7,732 | Oct 2026 |
| AureusERP | New MIT-licensed Laravel ERP | MIT | PHP (Laravel, Filament) | 12,073 | Oct 2026 |
| Axelor Open Suite | Java ERP and CRM suite | AGPL-3.0 | Java, PostgreSQL | 980 | Oct 2026 |
| Apache OFBiz | Apache ERP framework | Apache-2.0 | Java | 1,130 | Oct 2026 |
| metasfresh | Java ERP | GPL-2.0 | Java | 2,447 | Oct 2026 |
| iDempiere | Community ERP on Java | GPL-2.0 | Java | 666 | Oct 2026 |
Stars and dates are a snapshot from 16 October 2026. They show project activity, not quality. Tool names open our in-depth review.
1. ERPNext
Most complete free ERP for small businessCovers accounting, sales, purchasing, stock, manufacturing, projects, assets and CRM. Large community and an official hosted option on Frappe Cloud.
What it offers for ERP
- Leads, opportunities and quotations
- Accounting and inventory included
- Very large community
- Frappe Cloud hosting optional
40,232 stars · GPL-3.0 · repo updated Oct 2026
Read the full ERPNext review2. Odoo Community
Huge app ecosystem, with edition limitsOdoo Community offers many apps with a polished interface. Some features, notably full accounting, belong to the paid Enterprise edition.
What it offers for ERP
- Huge app ecosystem
- CRM linked to quotes and invoicing
- Active community and partners
- Modular: install only what you need
55,072 stars · LGPL-3.0 (Community edition) · repo updated Oct 2026
Read the full Odoo Community review3. Dolibarr ERP CRM
Light ERP for very small businessesA modular PHP ERP and CRM that runs on ordinary hosting. Easier to set up than the larger systems.
What it offers for ERP
- Modular: enable only what you use
- Invoicing, stock and agenda built in
- Runs on cheap shared hosting
- Very active project
7,732 stars · GPL-3.0 · repo updated Oct 2026
Read the full Dolibarr ERP CRM review4. AureusERP
New MIT-licensed Laravel ERPA fast-growing open source ERP with modules for inventory, purchasing, sales and more. Young, so check maturity.
What it offers for ERP
- Modular ERP built on Laravel and Filament
- Sales features
- Permissive MIT license
- Inventory and warehouse features
12,073 stars · MIT · repo updated Oct 2026
Read the full AureusERP review5. Axelor Open Suite
Java ERP and CRM suiteAxelor Open Suite offers CRM, sales, accounting, HR and production modules on a Java platform.
What it offers for ERP
- CRM, sales and accounting modules
- Java platform
- Configurable with low-code tools
- AGPL-3.0
980 stars · AGPL-3.0 · repo updated Oct 2026
Read the full Axelor Open Suite reviewAxelor, Apache OFBiz, metasfresh and iDempiere are Java systems that suit teams with developers. The first four above are friendlier for a small business.
A realistic rollout plan
| Phase | What you set up | Typical focus |
|---|---|---|
| 1 | Accounting, customers, suppliers, items | Get clean master data |
| 2 | Sales and purchasing | Quotes, orders, invoices, bills |
| 3 | Stock and warehouses | Receipts, deliveries, counts |
| 4 | HR, payroll, projects, POS | Only the modules you truly need |
Do not start with everything. Migrate data in a test copy, train two people well and run old and new in parallel for a month. Related guides: accounting, inventory and point of sale.
Check the edition
Odoo Community is open source, but some features, such as full accounting, belong to the paid Enterprise edition. ERPNext has an official hosted option on Frappe Cloud if you would rather not run servers.
Hosting an ERP
Example: a 20-person trading company
An illustrative example, not a real company.
A trading company has accounting in one tool, stock in a spreadsheet, and sales orders in email. Month end takes a week because nothing matches.
They choose ERPNext and implement in phases. First accounting, customers, suppliers and items. Second, sales and purchasing. Third, stock. They migrate data in a test copy, train two key people well, and run the old process beside the new one for a month.
It takes longer than hoped, but the next month-end closes in two days.
Common mistakes to avoid
- Trying to switch everything at once.
- Skipping data cleanup before migration.
- Over-customizing in the first months.
- Training only one person.
- Choosing an ERP your team cannot support.
When paying for a cloud product makes sense
Large paid ERPs offer vendor support and partner networks. Free ERPs reduce license cost but need implementation skill. Consider an official hosted plan or a partner for the first year if your team lacks experience.
ERPs need more than basic web hosting. Plan for a VPS with enough memory, backups and monitoring, from a provider such as Hostinger, or use the project's official hosted plan. Read our security checklist first.
Need a server to host it?
Self-hosting a CRM needs a server. PHP and MySQL apps can often run on ordinary web hosting, while Docker, Node, Python or Java apps usually need a VPS. Check each project's requirements first. Hostinger offers both shared web hosting and VPS plans.
Affiliate disclosure: this is an affiliate link. If you buy through it we may earn a commission at no extra cost to you. CRMs and software are listed independently of any hosting partner. Learn more.
Official links for the tools in this guide
Every tool above has its own page on our site with the full review. These are the official sources, so you can download the latest version safely.
- ERPNext: Official website · Source on GitHub
- Odoo Community: Official website · Source on GitHub
- Dolibarr ERP CRM: Official website · Source on GitHub
- AureusERP: Official website · Source on GitHub
- Axelor Open Suite: Official website · Source on GitHub
- Apache OFBiz: Official website · Source on GitHub
- metasfresh: Official website · Source on GitHub
- iDempiere: Official website · Source on GitHub