If you're comparing Boomerang and The Swarm (theswarm.com), you're likely a revenue leader or RevOps lead who's settled on relationship intelligence as a category but needs to pick a specific vendor. Both are credible. The right pick depends on whether you want raw data infrastructure or a product that runs the motion end-to-end.
This page is the head-to-head, written to actually help you decide. We've made our best case where Boomerang wins and we've stated honestly where The Swarm wins.
At a glance
The Swarm is the relationship data infrastructure company — a 580M-profile dataset with daily job changes, 50M+ companies with fundraising data, and an AI engine that maps relationships across teams, customers, and investors. They're a data and discovery platform built for builders. API, MCP server, Clay/HubSpot/Attio integrations. Backed by HubSpot Ventures, with strong customer logos including Reforge, Clay, AiSDR, Klarna, 11x, and Two Sigma Ventures.
Boomerang is a product, not infrastructure. We do two things together that The Swarm doesn't ship as a finished product. (1) Map the broadest warm graph in the category — four connector pillars (team + customers + board/advisors + partners), surfacing 3–5x more warm paths than single-source competitors. (2) Run the warm-intro motion end-to-end — drafts the ask, routes through the right connector, picks the moment, follows up, tracks to a booked meeting. Inside Slack, Salesforce, Outreach, and Gong.
What The Swarm does well
The Swarm is a strong product. Three places where they win clearly:
Best-in-class relationship dataset. 580M profiles with daily job changes, 50M companies with fundraising data, social engagement signals, education and work overlaps. For raw relationship discovery breadth at the data layer, they're unmatched. The Network Mapper API is real engineering.
Cross-use-case breadth. The Swarm serves sales, recruiting, investors, and founders. If your team needs relationship intelligence across multiple functions (not just sales), and you're willing to build the workflow on top of raw data, The Swarm's coverage is broader.
Self-serve, transparent pricing + free trial. 30-day free trial, SaaS plans starting at $99/month, API plans scale with usage. Real entry point for individuals and small teams.
What Boomerang does well
Five places where Boomerang wins:
It's a product, not infrastructure. The Swarm provides relationship data via API for builders to assemble their own workflow. Boomerang ships the workflow out of the box — 4-pillar warm graph mapping plus end-to-end agent activation, ready to use on day one. For revenue teams that want a product (not a build project), this is the decisive difference.
Structured 4-pillar warm graph. Where The Swarm provides raw data across many sources and lets you build the unified view, Boomerang ships an opinionated 4-pillar structure (team + customers + board/advisors + partners) that maps to how B2B sales motions actually work. Each pillar has its own taxonomy, cadence rules, and connector preferences.
End-to-end orchestration. Both products surface paths. The Swarm provides the data; reps and downstream tools then draft, ask, and follow up. Boomerang's agent (Rudy) drafts the ask in the connector's voice, picks the moment, routes for one-click approval under the connector's preferences, escalates to managers when reps stall, and closes the loop when intros produce revenue.
Connector preference enforcement. A board member can set rules like "only $500K+ deals, email only, max two asks per quarter, no portfolio competitors." Boomerang enforces these invisibly: asks that violate the rules never reach the connector. This is what keeps senior connectors engaged over years rather than burning out.
Operators alongside the product. We ship Boomerang with people who help run the program in the first 60 days. The managed-service component is part of the model because warm-intro programs require operational expertise most teams don't have in-house yet.
The buyer profile decision
Pick The Swarm if:
- You want raw relationship data infrastructure to build your own workflow.
- Your team needs cross-functional data (sales + recruiting + investor) and you're willing to assemble the workflow.
- You want self-serve, transparent pricing and a free entry point.
- You have engineering capacity to build on top of an API and want the deepest data depth (580M profiles).
Pick Boomerang if:
- You want a product, not infrastructure — 4-pillar warm graph + end-to-end agent activation, ready to use on day one.
- Your specific bottleneck is "we have paths and they're not turning into intros" — the activation gap.
- You want connector preferences enforced invisibly rather than depending on rep discipline.
- You want managed-service operators alongside the product for the first 60 days.
- You're activating board members, investors, and customer champions and need cadence-aware orchestration.
Pick both (some customers do, for different layers):
- The Swarm as underlying data depth (especially for teams that want broader data coverage than Boomerang's native mapping).
- Boomerang as the 4-pillar warm graph + warm-intro motion product on top.
The deeper difference: data infrastructure vs 4-pillar warm-intro product
The Swarm is a relationship data platform. They curate the dataset, map the graph across users and integrations, score relationship strength, and expose the data through SaaS, API, and partner integrations. The output is data and intelligence. Reps and downstream tools then act.
Boomerang is a 4-pillar warm-intro product. We structure the warm graph across four connector pillars in an opinionated way that fits the B2B sales motion (3–5x more paths than single-source competitors), and the agent runs the warm-intro motion end-to-end. The output is booked meetings.
This isn't a feature difference. It's a different architectural choice about form factor. The Swarm bets that good data plus partner tools (Clay, HubSpot) get the rest of the motion executed by builders. Boomerang bets that the activation work happens at scale only when a dedicated product (with the agent layer baked in) handles the structured graph and the social/cognitive load.
A note on customer outcome data
When comparing vendors in this category, we recommend asking each for three specific named customer outcomes with revenue impact attached.
Boomerang publishes specific, named, verifiable outcomes:
- Armis: 10x ROI in year one, 26,000 warm-intro paths created, 1,400+ hours of manual research eliminated
- Storylane: significant PLG-to-enterprise expansion acceleration through customer network operationalization
- Narvar: $17M in pipeline from champion job changes in one year
The Swarm has strong customer logos (Reforge, Clay, AiSDR, Klarna, 11x, Two Sigma Ventures) and credible endorsements from founders like Vivek Sodera (Superhuman) and Kevin Mahaffey (Lookout). Their public outcome specificity tied to revenue impact is less developed.
Bottom line
Boomerang and The Swarm are both legitimate options, but they're in different form-factor categories.
If your problem is relationship data infrastructure across multiple use cases and you want to build the workflow on top, pick The Swarm.
If your problem is the warm-intro motion across a structured 4-pillar warm graph (team + customers + board/advisors + partners) plus end-to-end activation, pick Boomerang.
If you're still unsure, the diagnostic: do you want a build project or a product? The Swarm is data infrastructure; Boomerang is a product that ships the 4-pillar warm graph + the agent that runs the motion.
Book a Boomerang demo if you want to walk through this on your real pipeline. We'll tell you honestly when The Swarm is the better fit and point you to them if so.
See our broader category argument: Why Boomerang.
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