# What pairs well with TheirStack > TheirStack is a signals tool, and a team running it still has 7 neighbouring categories to staff. The pick in each is Lusha for B2B data providers, Smartlead for cold email outreach, Zoho CRM for sales CRM, Dripify for LinkedIn outreach, Make for GTM engineering, Leadberry for website visitor identification and Regie.ai for AI SDR agents, each the leading tool in that category on published criteria. - Profile: https://saastracker.org/products/theirstack - Category: Buying Signals & Intent (https://saastracker.org/categories/intent-signals) - Web version: https://saastracker.org/products/theirstack/stack ## The stack, category by category | Category | Ideal pairing | Because | Benefit | | --- | --- | --- | --- | | B2B Data Providers | [Lusha](https://saastracker.org/products/lusha) (Best Value) | TheirStack is built for signals, not data. Lusha adds useful free tier. | Lists get built in minutes from filters, rather than bought, scraped, or typed out by hand. | | Cold Email Outreach | [Smartlead](https://saastracker.org/products/smartlead) (Best Value) | TheirStack sends buyers elsewhere for a finished workflow with scoring, sequencing, and suppression. Smartlead adds bulk mailbox onboarding. | Outreach goes out on a schedule and replies land in one place instead of a personal inbox. | | Sales CRM | [Zoho CRM](https://saastracker.org/products/zoho-crm) (Best Value) | TheirStack lists recruitment agency postings are a persistent noise source among its limits. Zoho CRM adds wider Zoho suite. | Every conversation ends up on a record, so a rep leaving does not take the pipeline with them. | | LinkedIn Outreach | [Dripify](https://saastracker.org/products/dripify) (Best Value) | TheirStack lists companies that do not advertise roles publicly are effectively absent among its limits. Dripify adds cloud execution with sane default limits protects casual users from themselves. | A second channel reaches the people who never open email, without a rep doing it by hand. | | GTM Engineering | [Make](https://saastracker.org/products/make) (Best Value) | TheirStack lists credit consumption is easy to underestimate on exploratory queries among its limits. Make adds best power-per-dollar in mainstream automation. | The workflow nobody wanted to buy a whole tool for gets built in an afternoon. | | Website Visitor Identification | [Leadberry](https://saastracker.org/products/leadberry) (Best Value) | TheirStack is built for signals, not visitor ID. Leadberry adds people data with names, titles, phones, emails, and social profiles. | The companies already reading the site become a list, instead of anonymous traffic. | | AI SDR Agents | [Regie.ai](https://saastracker.org/products/regie-ai) (Best Value) | TheirStack is built for signals, not AI SDR. Regie.ai adds why-now signal tracking and account ranking. | Research, writing and sending happen without a headcount, and the meetings still get booked. | ### Lusha for B2B Data Providers TheirStack is built for signals, not data. Lusha adds useful free tier. Lists get built in minutes from filters, rather than bought, scraped, or typed out by hand. Compliance certifications ease privacy reviews unusual at this price. Apollo.io holds Category Leader here, and is worth weighing if that is closer to the problem TheirStack leaves open. ### Smartlead for Cold Email Outreach TheirStack sends buyers elsewhere for a finished workflow with scoring, sequencing, and suppression. Smartlead adds bulk mailbox onboarding. Outreach goes out on a schedule and replies land in one place instead of a personal inbox. Sub-sequences bring behavioral branching most cold tools lack. Instantly holds Category Leader here, and is worth weighing if that is closer to the problem TheirStack leaves open. ### Zoho CRM for Sales CRM TheirStack lists recruitment agency postings are a persistent noise source among its limits. Zoho CRM adds wider Zoho suite. Every conversation ends up on a record, so a rep leaving does not take the pipeline with them. Unmatched capability per dollar: custom modules from $14, Blueprint process enforcement and unlimited reports from $23, approvals and sandboxes from $40. HubSpot CRM holds Category Leader here, and is worth weighing if that is closer to the problem TheirStack leaves open. ### Dripify for LinkedIn Outreach TheirStack lists companies that do not advertise roles publicly are effectively absent among its limits. Dripify adds cloud execution with sane default limits protects casual users from themselves. A second channel reaches the people who never open email, without a rep doing it by hand. Genuinely easy: most users are productive the first afternoon. Expandi holds Category Leader here, and is worth weighing if that is closer to the problem TheirStack leaves open. ### Make for GTM Engineering TheirStack lists credit consumption is easy to underestimate on exploratory queries among its limits. Make adds best power-per-dollar in mainstream automation. The workflow nobody wanted to buy a whole tool for gets built in an afternoon. EU data-center option on self-serve tiers, a compliance lever rivals reserve for enterprise contracts or lack entirely. Zapier holds Category Leader here, and is worth weighing if that is closer to the problem TheirStack leaves open. ### Leadberry for Website Visitor Identification TheirStack is built for signals, not visitor ID. Leadberry adds people data with names, titles, phones, emails, and social profiles. The companies already reading the site become a list, instead of anonymous traffic. The LinkedIn layer showing shared connections and connection degree at identified companies is the single most conversion-relevant feature here and is unusual at this price. Leadfeeder holds Category Leader here, and is worth weighing if that is closer to the problem TheirStack leaves open. ### Regie.ai for AI SDR Agents TheirStack is built for signals, not AI SDR. Regie.ai adds why-now signal tracking and account ranking. Research, writing and sending happen without a headcount, and the meetings still get booked. A dialer, LinkedIn steps, and email sequencing in one workspace, with calling available even on the free plan. AiSDR holds Category Leader here, and is worth weighing if that is closer to the problem TheirStack leaves open. ## FAQ ### What is the best stack to run with TheirStack? TheirStack is a signals tool, and a team running it still has 7 neighbouring categories to staff. The pick in each is Lusha for B2B data providers, Smartlead for cold email outreach, Zoho CRM for sales CRM, Dripify for LinkedIn outreach, Make for GTM engineering, Leadberry for website visitor identification and Regie.ai for AI SDR agents, each the leading tool in that category on published criteria. ### What do I pair with TheirStack for B2B Data Providers? Lusha. TheirStack is built for signals, not data. Lusha adds useful free tier. Lists get built in minutes from filters, rather than bought, scraped, or typed out by hand. ### How many tools do I need alongside TheirStack? TheirStack 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 Regie.ai worth adding alongside TheirStack? TheirStack is built for signals, not AI SDR. Regie.ai adds why-now signal tracking and account ranking. 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.