MarketSizer vs Bombora
Bombora is the category anchor for topic-level intent, built for marketing. MarketSizer fires on subscription events, built for sales. One says a topic is warming up; the other says an account just moved.
“The data cooperative that powers B2B intent.”
Source: bombora.com homepage
Best known for / useful for
Bombora
Best known for
The B2B intent-data cooperative behind Company Surge - aggregated topic-intent signals sourced from a large publisher network and used by many downstream sales and marketing tools.
Useful for
Marketing and RevOps teams that want a wide topic-intent overlay, either directly or through downstream platforms that resell Bombora data.
MarketSizer
Best known for
Subscription intelligence - accounts ranked by observable buying events, not by aggregated topic scores.
Useful for
Sales-led teams that want event-based signals reps can act on this week, delivered where they already work.
Where Bombora is strong
- The category-anchor cooperative for third-party topic intent - broad publisher-network coverage.
- Company Surge is one of the most widely-integrated intent-data sources in the industry.
- Available directly and through downstream partners (marketing-automation, ABM, CRM).
- Deep enterprise adoption and a mature analyst position.
- Well-shaped for marketing-owned ABM programmes running against topic taxonomies.
Feature-by-feature comparison
| Feature | Bombora | MarketSizer |
|---|---|---|
| Signal source and shape | ||
| Aggregated topic-level intent (consent-based publisher co-op) | Included | Not included |
| Event-based subscription signals (trial, switch, churn, renewal) | Not included | Included |
| Signal explainability at the event level | Score-level | Included |
| Refresh cadence | Weekly Company Surge | Event-driven, near real-time |
| Workflow | ||
| Primary user | Marketing / RevOps | Sales reps and GTM leads |
| Chrome-extension side panel in CRMs and LinkedIn | Delivered via downstream platforms | Included |
| Delivery to marketing automation | Included | Via CRM sync |
| Commercial | ||
| Pricing model | Enterprise data-license or resold via downstream tools | Credit-based - see pricing page |
MarketSizer pricing as published at marketsizer.io/pricing. Bombora details as published on their own site and public documentation, last checked 8 August 2026. Spotted something out of date? Tell us and we will fix it.
Which team should choose which
Choose Bombora if
- You want the category-anchor third-party topic-intent overlay across a wide publisher network.
- Your ABM programme runs on marketing-automation orchestration that already integrates Bombora natively.
- You need broad account-level intent coverage for territory planning and campaign sequencing.
- A weekly topic-intent score across your whole target market is the shape of signal your programme runs on.
Choose MarketSizer if
- You want event-based buying signals (trials, switches, renewals, churn), not aggregated topic scores.
- Reps need signals surfaced alongside HubSpot, Salesforce, LinkedIn and Apollo, not delivered to marketing.
- You want each signal traceable to the specific event that produced it.
- You need something a mid-market team can adopt without a marketing-automation orchestration platform underneath.
What buyers say about the category
Themes from GTM leaders currently evaluating tools in this space.
Marketing teams rarely arrive without Bombora in some form; Company Surge scores are baked into half the downstream tools they already run. What they ask us for is the sentence a surge score cannot produce: this account is switching from that vendor, around this date. Topic intent warms accounts up. The switching record is what sales acts on.
MarketSizer vs Bombora - frequently asked questions
Is MarketSizer a replacement for Bombora?
For most teams, no. Bombora is a marketing-owned topic-intent source; MarketSizer is a sales-owned account-timing layer. Teams that run marketing-automation-driven ABM often keep Bombora for the topic-intent overlay and add MarketSizer for the sales execution surface.
How is MarketSizer different from Bombora Company Surge?
Company Surge is an aggregated account-level topic-intent score derived from web activity across Bombora's publisher cooperative. MarketSizer signals fire on specific subscription events - a trial started, a vendor switched, a subscription approaching renewal - attached to the underlying account event. One is a probability; the other is a record.
Do teams use MarketSizer and Bombora together?
Yes, at enterprises. Bombora feeds the marketing-automation platform with topic-intent scores at the account-planning altitude; MarketSizer fires event-based signals into the sales workflow at the execution altitude. Different jobs, complementary layers.
What does Bombora cost?
Bombora sells directly to enterprises on an annual data-license model and is resold through many downstream sales and marketing tools. Bombora does not list direct pricing on its site. MarketSizer is credit-based (see current plans).
Does Bombora have a Chrome extension for reps?
Not directly - Bombora is primarily a data source that feeds downstream marketing platforms. Reps typically consume Bombora signals through their CRM, mapped via a marketing-owned integration. MarketSizer surfaces signals directly to reps through the SignalOps Chrome extension.
See MarketSizer next to your Bombora data.
30 minutes on your accounts, tailored to your ICP. We show which companies are trialling, switching or renewing right now, so you can see whether the timing signal changes what your team does next.
500 credit trial No credit card Live data, not a slide deck
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