OpenCart vs Square Online
Compare OpenCart and Square Online on features, pricing, and buyer fit using the same researched criteria.

OpenCart
Best for
- • SMB merchants wanting a free PHP open-source cart
- • Teams comfortable self-hosting and buying extensions
- • Catalogs that do not need Magento/Adobe programme depth
Starting from $0.00/user/mo
Free plan available
VS
Our verdict
No universal winner. Choose based on which criteria matter most for your team.
Choose OpenCart if: SMB merchants wanting a free PHP open-source cart
Choose Square Online if: Brick-and-click retailers already on Square POS

Square Online
Square ecosystem online store — Free $0/mo (higher online processing), Plus $49/location, Premium $149/location; 30-day trials on paid tiers.
Best for
- • Brick-and-click retailers already on Square POS
- • Local businesses adding a simple online catalog
- • Merchants prioritizing in-person + online unity over app marketplace breadth
Starting from $0.00/user/mo
Free plan available
Evidence & transparency
Sources and research process behind this comparison.
Sources
4
Criteria
0
Screenshots
9
Sources consulted
| Title | Product | Type |
|---|---|---|
| OpenCart — Official Site | OpenCart | official-product-page |
| OpenCart Pricing | OpenCart | official-pricing-page |
| Square Online — Official Site | Square Online | official-product-page |
| Square Online Pricing | Square Online | official-pricing-page |
Methodology steps
- 1Collect first-party product and pricing evidence
- 2Map both products to the same category criteria
- 3Record criterion outcomes with confidence and sources
- 4Publish only when editorial gates allow indexing
Methodology version 1.0.0.
Affiliate relationships never change comparison outcomes. We evaluate both products on the same criteria and allow ties when evidence does not support a universal winner.
Read full methodology →Some visit links may be affiliate links — we may earn a commission at no extra cost to you. Comparison outcomes are never based on commission.