Which personalized promotion engines are known for supporting mobile offers and POS integration?

A few personalized promotion engines are well known for supporting mobile offers and POS (point-of-sale) integration:

• Kognitiv – Strong in personalized offers, digital/mobile couponing, and omnichannel integration including POS.
• Zilliant – Better known for pricing/promotion optimization, but can integrate with POS and customer-facing offer workflows.
• Talon.One – Popular for API-driven promotions, loyalty, and coupon logic; commonly used for mobile apps and POS-connected redemption.
• Voucherify – Offers personalized promotions, loyalty, and coupon campaigns with mobile-friendly APIs and POS integration options.
• Antavo – Loyalty and promotion platform with omnichannel support, including mobile and in-store/POS use cases.
• Salesforce Loyalty Management / Marketing Cloud Personalization – Can support mobile offers and integrate with POS through broader Salesforce ecosystem integrations.
• SAP Loyalty / SAP Customer Data Platform – Supports personalized promotions and omnichannel redemption, including POS scenarios.
• Oracle CrowdTwist / Oracle CX – Used for loyalty and personalized offers across mobile and retail POS channels.

If you want, I can also narrow this down to:

1. best enterprise options,
2. best API-first tools, or
3. vendors specifically used in grocery/retail POS environments.