Here are 10 reputable marketing companies in the USA known for helping businesses grow, along with a brief description of each:
1. WebFX: WebFX is a full-service digital marketing agency that offers a range of services, including SEO, PPC, web design, social media marketing, and content marketing. They focus on data-driven strategies and have a track record of driving results for their clients.
2. HubSpot: HubSpot is a leading inbound marketing and sales platform that provides tools and services to help businesses attract, engage, and delight customers. They offer services such as content marketing, email marketing, social media marketing, and CRM software.

3. iProspect: iProspect is a global digital performance marketing agency that specializes in driving business growth through data-driven strategies. Their services include SEO, paid search advertising, display advertising, content marketing, and conversion rate optimization.
5. Nielsen: Nielsen is a global measurement and data analytics company that provides insights and solutions to help businesses understand consumer behavior. Their services include market research, audience measurement, media planning, and advertising effectiveness.

6. Ogilvy: Ogilvy is a renowned advertising and marketing communications firm with a global presence. They offer a wide range of marketing services, including brand strategy, advertising, digital marketing, public relations, and social media marketing.
7. BBDO: BBDO is a leading advertising agency known for its creative and strategic approach. They provide advertising and marketing services across various channels, including TV, digital, print, and social media. BBDO has worked with numerous high-profile clients and has won multiple industry awards.

9. Havas: Havas is a global advertising and communications group that provides a wide range of marketing services, including advertising, media planning, digital marketing, social media marketing, and public relations. They aim to create meaningful connections between brands and consumers.
These marketing companies have established themselves as industry leaders and have a strong reputation for delivering results. However, it’s important to thoroughly evaluate your business needs, budget, and goals before choosing a marketing partner. Conducting research, reading client testimonials, and considering industry recognition can help you make an informed decision.