B2B Sales & Marketing Service Providers and Tools

Clari is an AI-powered revenue operations and sales analytics platform that unifies forecasting, pipeline management, sales engagement and conversation intelligence so B2B teams can run revenue end-to-end.

Claude, developed by Anthropic, is an enterprise-grade AI assistant and family of large language models for writing, coding, analysis, and workflow automation, available via apps and API.

Clay is an AI-native go-to-market platform that unifies data from 150+ providers, enriches leads, and automates highly personalized outbound workflows for B2B teams.

Clearbit by HubSpot is a B2B data enrichment and sales intelligence platform that helps companies create, capture, and convert demand from ideal customers with real-time company and contact data.([clearbit.com](https://clearbit.com/platform/enrichment?utm_source=openai))

Clearbit is a B2B marketing intelligence provider that enriches leads and accounts with real-time data and uses its Reveal IP intelligence to turn anonymous website traffic into actionable intent signals.

Clearout is an AI-powered email and phone validation, email finder and prospecting platform that helps businesses clean their databases, protect sender reputation and reach real customers.([clearout.io](https://clearout.io/?utm_source=openai))

Clearscope is a content-first SEO platform that helps marketing and editorial teams research topics, write and optimize content, and monitor performance across search and AI answer engines.

ClickFunnels is an all-in-one sales funnel, website, and marketing platform that helps businesses build high-converting funnels, manage campaigns, and sell online without needing developers.

ClientSuccess is a customer success management platform that helps B2B subscription businesses onboard, retain, and grow customers by centralizing health, usage, renewal, and engagement data.

Close is a sales engagement CRM built for startups and SMBs, combining pipeline management with built‑in calling, SMS, email, automation and AI tools. It helps inside sales teams move faster, stay organized, and close more deals with less manual work.

CloudTalk is an AI-powered cloud phone and call center platform for sales, support, and operations teams, offering global numbers, smart routing, AI dialers, and deep CRM integrations.

CloudTask is a RevOps-focused marketplace and outsourced revenue partner that helps B2B companies hire vetted sales, marketing, customer success, and support talent—as well as agencies and software—to accelerate pipeline and revenue. ([cloudtask.info](https://cloudtask.info/))

Cognism is a B2B sales intelligence platform that provides GDPR-compliant company and contact data, with particular strength in EMEA, to help revenue teams find and connect with decision-makers.

Column Five is a B2B-focused creative agency that builds brand storytelling systems for high-growth SaaS and technology companies through content, SEO/AEO, and design. ([columnfivemedia.com](https://www.columnfivemedia.com/services))

Compound Growth Marketing is a Boston-based B2B demand generation agency that builds full-funnel, data-driven growth systems for high‑growth SaaS and technology companies.([cbinsights.com](https://www.cbinsights.com/company/compound-growth-marketing?utm_source=openai))

Conductor is an enterprise website optimization and intelligence platform that combines AI-powered content creation, search visibility insights, and 24/7 website monitoring to grow organic traffic and digital revenue.

ConnectAndSell is a human-assisted, AI-powered sales acceleration and dialer platform that connects B2B reps directly with hard-to-reach decision-makers at scale.

Content Allies is a B2B podcast production and marketing agency that helps companies launch, produce, and grow revenue-generating podcasts.

Copper is a Google Workspace–native CRM and client/project management platform that lets relationship-focused teams manage pipelines, projects, and communications directly from Gmail and Google Calendar. ([copper.com](https://www.copper.com/google-sheets-crm?utm_source=openai))

Copy.ai is an AI-native go-to-market (GTM) platform that combines AI writing, workflows, and deep integrations to automate sales, marketing, and RevOps content and processes. It helps B2B teams generate high-quality copy, research, and outreach at scale while staying on brand.

Copysmith is an AI-powered content platform that combines tools like Rytr, Frase, and Describely to help marketing and ecommerce teams generate, optimize, and manage copy at scale.

Crisp is an AI-powered live chat, chatbot and omnichannel helpdesk platform that unifies customer conversations from web, email and messaging apps into one shared inbox.

Custify is a customer success platform for B2B SaaS companies that centralizes customer data and automates workflows to reduce churn and drive expansion.

Customer.io is a customer engagement and marketing automation platform that lets data-driven teams orchestrate personalized, cross-channel journeys across email, SMS, push, in-app, and webhooks. ([customer.io](https://customer.io/?utm_source=openai))