
GrowthX
Content and organic growth services for search and AI answers.
Search, content and acquisition services built around AI-supported execution. Explore selected firms and platforms, their delivery models and official sources.

Content and organic growth services for search and AI answers.
An AI-native search agency delivering organic growth and content work.

AI-supported inbound marketing and lead generation for smaller businesses.

B2B SEO, AI search optimization and entity modeling for SaaS, fintech and AI companies.

AI-assisted advertising software paired with managed agency services.

Managed agentic commercial operations for Brazilian B2B businesses.
An AI-native marketing agency pairing human strategy with agent-powered execution.
A managed marketing team organized around AI-supported production and execution.

Digital workers for outbound sales, inbound demand and account expansion.
An AI sales employee running research, outreach and follow-up.

AI outbound-sales agents spanning research, outreach and meeting generation.

A specialist data and workflow platform for go-to-market teams.

Revenue AI connecting customer interactions with sales execution and forecasting.

An agentic marketing platform centered on the Piper AI sales-development agent.

An agentic sales workspace combining research, outreach and dialing.

Product-catalog optimization for discovery and selection by AI shopping agents.
In marketing & growth, an AI-native firm makes AI central to how it delivers the work. A service firm takes on delivery for you; a software company provides tools your team uses. The distinction matters when comparing scope, human involvement, and responsibility.
Y Combinator’s service-company thesis describes the wider shift toward businesses that use AI to perform work for customers. This index brings those firms together with relevant software, with sources and delivery models kept explicit.
Read Y Combinator’s thesisCheck whether strategy, content production, technical changes and ongoing measurement are delivered by the provider. Analytics software and an agency engagement have different responsibilities.
Ask which search channels are covered, who publishes or implements changes, and how the provider connects visibility with qualified traffic and conversions. Compare the evidence behind individual case studies.
Start with the delivery model and services, then compare company details, named examples and source links. Profiles describe published information; confirm current scope, availability and commercial terms directly with the company.