# What pairs well with Owler > Owler is a signals tool, and a team running it still has 7 neighbouring categories to staff. The pick in each is Apollo.io for B2B data providers, Instantly for cold email outreach, HubSpot CRM for sales CRM, Expandi for LinkedIn outreach, Zapier for GTM engineering, Leadfeeder for website visitor identification and AiSDR for AI SDR agents, each the leading tool in that category on published criteria. - Profile: https://saastracker.org/products/owler - Category: Buying Signals & Intent (https://saastracker.org/categories/intent-signals) - Web version: https://saastracker.org/products/owler/stack ## The stack, category by category | Category | Ideal pairing | Because | Benefit | | --- | --- | --- | --- | | B2B Data Providers | [Apollo.io](https://saastracker.org/products/apollo) (Category Leader) | Owler lists there is no real prospecting capability among its limits. Apollo.io adds free tier and transparent pricing. | Lists get built in minutes from filters, rather than bought, scraped, or typed out by hand. | | Cold Email Outreach | [Instantly](https://saastracker.org/products/instantly) (Category Leader) | Owler lists companies that generate no press coverage generate no alerts among its limits. Instantly adds unlimited accounts + free warm-up on every tier. | Outreach goes out on a schedule and replies land in one place instead of a personal inbox. | | Sales CRM | [HubSpot CRM](https://saastracker.org/products/hubspot-crm) (Category Leader) | Owler sends buyers elsewhere for revenue or headcount figures they can rely. HubSpot CRM adds free unlimited view-only seats. | Every conversation ends up on a record, so a rep leaving does not take the pipeline with them. | | LinkedIn Outreach | [Expandi](https://saastracker.org/products/expandi) (Category Leader) | Owler is built for signals, not LinkedIn. Expandi adds best-regarded safety architecture in the category. | A second channel reaches the people who never open email, without a rep doing it by hand. | | GTM Engineering | [Zapier](https://saastracker.org/products/zapier) (Category Leader) | Owler lists news-derived signals reach everyone at once among its limits. Zapier adds free tier plus 14-day trial. | The workflow nobody wanted to buy a whole tool for gets built in an afternoon. | | Website Visitor Identification | [Leadfeeder](https://saastracker.org/products/leadfeeder) (Category Leader) | Owler is built for signals, not visitor ID. Leadfeeder adds unlimited users on every plan including free. | The companies already reading the site become a list, instead of anonymous traffic. | | AI SDR Agents | [AiSDR](https://saastracker.org/products/aisdr) (Category Leader) | Owler lists only single seats are purchasable online among its limits. AiSDR adds metering by researched contacts rather than emails sent. | Research, writing and sending happen without a headcount, and the meetings still get booked. | ### Apollo.io for B2B Data Providers Owler lists there is no real prospecting capability among its limits. Apollo.io adds free tier and transparent pricing. Lists get built in minutes from filters, rather than bought, scraped, or typed out by hand. Data + engagement in one product removes the export/import loop entirely. Lusha holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ### Instantly for Cold Email Outreach Owler lists companies that generate no press coverage generate no alerts among its limits. Instantly adds unlimited accounts + free warm-up on every tier. Outreach goes out on a schedule and replies land in one place instead of a personal inbox. Bundled validation, tracking domains, and ESP matching bake deliverability hygiene into defaults. Smartlead holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ### HubSpot CRM for Sales CRM Owler sends buyers elsewhere for revenue or headcount figures they can rely. HubSpot CRM adds free unlimited view-only seats. Every conversation ends up on a record, so a rep leaving does not take the pipeline with them. The strongest free tier in the category by a wide margin, usable indefinitely and complete enough to run a two-person company's sales. Zoho CRM holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ### Expandi for LinkedIn Outreach Owler is built for signals, not LinkedIn. Expandi adds best-regarded safety architecture in the category. A second channel reaches the people who never open email, without a rep doing it by hand. Engagement scraping builds intent-rich audiences competitors can't match. Dripify holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ### Zapier for GTM Engineering Owler lists news-derived signals reach everyone at once among its limits. Zapier adds free tier plus 14-day trial. The workflow nobody wanted to buy a whole tool for gets built in an afternoon. The surrounding stack covers real small-business needs without adding vendors. Make holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ### Leadfeeder for Website Visitor Identification Owler is built for signals, not visitor ID. Leadfeeder adds unlimited users on every plan including free. The companies already reading the site become a list, instead of anonymous traffic. The most generous permanent free tier in the category: 100 identified companies a month with unlimited users, which lets a business validate the whole idea at zero cost. Leadberry holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ### AiSDR for AI SDR Agents Owler lists only single seats are purchasable online among its limits. AiSDR adds metering by researched contacts rather than emails sent. Research, writing and sending happen without a headcount, and the meetings still get booked. Live web search for list building is less brittle than a static contact database when your ICP is defined by behavior rather than firmographics. Regie.ai holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ## FAQ ### What is the best stack to run with Owler? Owler is a signals tool, and a team running it still has 7 neighbouring categories to staff. The pick in each is Apollo.io for B2B data providers, Instantly for cold email outreach, HubSpot CRM for sales CRM, Expandi for LinkedIn outreach, Zapier for GTM engineering, Leadfeeder for website visitor identification and AiSDR for AI SDR agents, each the leading tool in that category on published criteria. ### What do I pair with Owler for B2B Data Providers? Apollo.io. Owler lists there is no real prospecting capability among its limits. Apollo.io adds free tier and transparent pricing. Lists get built in minutes from filters, rather than bought, scraped, or typed out by hand. ### How many tools do I need alongside Owler? Owler sits next to 7 other categories in a working signals stack, and its own profile names the gap each one fills. Most teams staff the first two or three and add the rest as the motion grows. ### Is AiSDR worth adding alongside Owler? Owler lists only single seats are purchasable online among its limits. AiSDR adds metering by researched contacts rather than emails sent. Research, writing and sending happen without a headcount, and the meetings still get booked. --- Source: SaaSTracker (https://saastracker.org), an independent editorial project. Pairings are the leading tool in each complementary category, chosen on published criteria: https://saastracker.org/methodology. Placement cannot be purchased.