01
Order3 (free workspace)
Disclosure: we build Order3 Best for: Small teams that want shared records, mobile scanning, and AI-drafted reorders without paying, no card required
Strengths
- Free for small workspaces with reorder drafting and human approvals included, not dangled behind a paywall
- Scan, receive, count, and transfer from a phone
- Audit history on every change from day one
Limitations
- Free covers small workspaces; larger teams move to quoted pricing
- Younger product; integrations are being finalized rather than an established catalog
Pricing: Free for small workspaces; quoted for larger teams
03
Zoho Inventory (free plan)
Best for: Very small ecommerce sellers who want real order management at zero cost
Strengths
- The free plan includes genuine order and shipping workflows, not just a stock list
- Connectors to major sales channels even on the free tier
Limitations
- Caps monthly orders and users on the free plan; check current limits before committing
- Rule-based reorder alerts only; the PO is still assembled by hand
04
Odoo Community Edition
Best for: Technical teams that can self-host and want a full ERP for the price of their own time
Strengths
- Genuinely free and open source, with inventory, purchasing, and accounting in one system
- No item or user caps imposed by a vendor's pricing page
Limitations
- Free means self-hosted: the cost moves to servers, upgrades, and maintenance time
- An ERP rollout is heavy machinery for a small team's stock problem