Third and Grove

Overview

Third and Grove (TAG) is a Boston-based agency with a Platinum Shopify partner badge and a partner-since date of 2016.^[12] Its directory profile estimates a team of 51–200 people, lists the United States, Switzerland and the United Kingdom as top markets, and names health and beauty, apparel and accessories, and food and beverages as top industries; the profile description cites work for P&G, Amorepacific and Stanley 1913.^[12]

Unlike most agencies on this list, Third and Grove is not a Shopify-only shop: its website lists Shopify Plus alongside Contentful, Drupal, Acquia and WordPress, and groups its services as agentic (AI), strategy, creative, technology and managed services.^[13] Clients named on its website include Brooks Running, Stanley 1913, Reef, Coola, Grande Cosmetics, Bellacor and Jared, as well as non-retail organisations such as Western Alliance and Littler.^[13]

Its multi-platform background is useful for enterprise brands combining a Shopify store with a headless CMS or an existing Drupal or WordPress estate. The flip side is that Shopify is one of several practices, so buyers should confirm the size of the dedicated Shopify team. TAG’s website lists only a Boston office and does not publish pricing or a founding year.^[13]

Third and Grove features

• Checkout customisation and Shopify Functions
• Products and metafield management
• Headless builds with Contentful
• Managed services
• AI and agentic commerce work

Third and Grove pricing

Quote-based; no prices are published on the agency's website or Shopify directory profile.

Third and Grove strengths and limitations

Appears in

• Best Shopify Agencies in 2026 #6

Third and Grove alternatives and competitors

Alternatives to Third and Grove: companies ranked in the same lists.

• TWThe Working Party
• 1R Agency
• Ask Phill
• PMP3 Media
• RCRainy City Agency
• CDConvert Digital
• Praella
• Quickfire Digital
• CColorz
• Lazer Technologies
• Platter
• Tryzens Global