B2B Sales & Marketing Service Providers and Tools

Intentsify is a B2B intent data and activation platform that uses AI-generated buyer intelligence and managed programs to help revenue teams turn buying signals into pipeline.

Intercom is an AI-first customer service platform that combines an AI agent, modern helpdesk, and proactive messaging so businesses can support and engage customers at scale.

Inturact is a specialized account-based marketing and SaaS growth agency that helps post–product-market-fit B2B software companies turn early traction into systematic, scalable revenue.

Ironpaper is a New York–based B2B growth agency specializing in lead generation, demand generation, ABM, and sales enablement for companies with complex, long sales cycles.

Jasper is an AI content automation platform purpose-built for marketing teams, helping them plan, create and scale on-brand content across every channel.

Jellyfish is an integrated global digital marketing business that unites media, creative, data and proprietary AI technology to help brands accelerate growth across channels. ([jellyfish.com](https://www.jellyfish.com/en-us?utm_source=openai))

Jiminny is an AI-powered conversation and revenue intelligence platform that records, transcribes and analyzes sales interactions so B2B revenue teams can coach more effectively, forecast accurately and win more deals. ([jiminny.com](https://jiminny.com/))

JumpCrew is an outsourced B2B sales and marketing partner that builds and runs dedicated, white-labeled sales teams to generate leads, build pipeline, and close revenue for growing brands.([jumpcrew.com](https://jumpcrew.com/?utm_source=openai))

JustCall is an AI-powered cloud phone and messaging platform for sales, support, and customer success teams, combining voice, SMS, WhatsApp, and automations in one tool.

Kaspr is a LinkedIn-focused sales intelligence tool and Chrome extension that gives B2B sales and recruiting teams instant access to verified phone numbers and emails for prospects. ([help.kaspr.io](https://help.kaspr.io/en/articles/8862992-what-is-kaspr?utm_source=openai))

Keap (formerly Infusionsoft) is an automation-first CRM that combines contact management, marketing automation, sales pipelines, appointments, and payments in a single platform built for small businesses.

Kickbox is an email verification platform that helps marketers and developers clean email lists and verify addresses in real time to reduce bounces and protect sender reputation.

KickFire is a B2B first-party intent data and IP address intelligence platform that deanonymizes website visitors and enriches sales and marketing systems with account-level insights.citeturn0search9turn22search7turn1search11

Kixie is an AI-powered sales engagement and VoIP platform that combines multi-line power dialing, business SMS, and deep CRM integrations to help revenue teams connect with more prospects and customers.

Klaviyo is an AI-first B2C CRM and marketing automation platform that unifies email, SMS, WhatsApp, mobile, reviews, and analytics to help consumer brands build data-driven customer relationships at scale.

Klenty is an AI-powered sales engagement platform that helps B2B sales teams run multi-channel outreach, automate workflows, and book more meetings from the same pipeline.

KlientBoost is a performance marketing agency that helps SaaS, ecommerce, and lead generation brands grow revenue through data-driven PPC, CRO, SEO, email, and creative services.

Koncert is an AI-powered B2B sales dialer and multi-channel sales engagement platform that helps outbound teams dramatically increase live conversations, connect rates, and pipeline.

Kustomer is an AI-powered customer service CRM that unifies omnichannel support, customer data and automation to help brands deliver fast, personalized experiences at scale.

Launch Leads is a multi-channel B2B lead generation and appointment-setting agency that fills sales pipelines with qualified meetings with decision-makers. They act as an extension of your sales team, handling prospecting, qualification, and appointment scheduling so your reps can focus on closing.

Lead Express is an Australian B2B lead generation agency that delivers guaranteed, qualified sales opportunities through integrated digital, phone, and data-driven campaigns.

Lead Forensics is B2B website visitor identification software that reveals the companies behind anonymous web traffic and surfaces contact and intent data to fuel sales and marketing.

Lead411 is a B2B sales intelligence and contact data platform that provides verified emails, direct dials, intent signals and CRM integrations to help revenue teams find and engage decision-makers.

LeadBird is a performance-based B2B lead generation agency that runs done-for-you cold email campaigns and charges per meeting-ready lead, so you only pay for results.