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Real-time subscription intelligence

Find in-market opportunities you can actually win.

MarketSizer leverages real-time subscription insights to provide your revenue teams with highly qualified  opportunities that are a strong fit, actively buying and  historically winnable.

8 out of 10 MarketSizer opportunities are ICP-aligned and in-market when contacted

Curve
Works inside the tools you already use
Global coverage
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301+ vendors tracked
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11.7M+ active subscriptions
54.9M domains tracked
Global coverage
icon
301+ vendors tracked
icon
11.7M+ active subscriptions
54.9M domains tracked
Global coverage

Are you targeting companies at the wrong time with no competitive context?

Not ICP-fit
You're targeting based on demographics, not buying behavior. Without knowing their tech stack and competitive patterns, you fill your pipeline with deals that won't convert.
Not In-market
You're reaching out too early or too late. By the time generic intent shows activity, companies have already chosen competitors or aren't ready yet.
Not winnable
Even in-market companies aren't all worth pursuing. Without win probability data, you chase deals with sticky incumbents or scenarios where you historically lose.

Access the largest volume of live B2B opportunities globally.

40M+

Opportunities mapped

90%

Detection Accuracy

Daily

Refresh cycle

We only show you qualified opportunities.

Every account MarketSizer surfaces is backed by evidence across three critical dimensions.

See subscription intelligence in action.

Discover

Identify companies evaluating solutions right now.

Identify companies that fit your ICP, are actively trialing your competitors, recently churned from incumbents, or approaching renewal windows, and where you have a high win probability based on historical subscription data.

See tech stack, trials, and subscription changes instantly

Spot competitor switching moments and in-market signals

Understand account fit and timing without context switching

Insight

Get deep competitive context on every qualified opportunity.

Unlock a qualified opportunity to access the estimated deal value,  full competitive context, level of purchase intent and likely purchase date, plus assess your likelihood to win their business.

See subscription changes and trends across your entire market

Compare vendors side-by-side with competitive benchmarks

Turn signals into action with reports, lists, and prioritised opportunities

Action

Act quickly and win more deals with informed outreach.

Instantly generate compelling, tailored sales narratives with recommended highly-contextualised outreach angles. One-click push opportunities to your CRM or sales engagement solution.

Build and manage account lists + prioritise by fit, intent, and likelihood to win

Surface new opportunities as they become in-market

Get recommended actions: which role to target, how to position, and when timing is right

MarketSizer account management dashboard showing renewal dates, active trials, and purchase intent levels for key SaaS accounts including Growoyum, Comma, and PrognoCIS. Highlights high-, medium-, and low-intent opportunities with competitor trial timelines. Supports B2B SaaS revenue teams in targeting renewals and competitive conversions across global markets.
MarketSizer churn detection dashboard showing monthly churn signals from existing accounts and key SaaS performance metrics. Highlights include a line graph tracking churn trends from November to March, with KPIs such as at-risk accounts (482), churn rate (4.2%), and renewal rate (76%) with directional changes. Designed for GTM and Customer Success teams in B2B SaaS companies across the US and EMEA.

Turn competitive deals into winnable opportunities.

Every day without MarketSizer, you're missing qualified opportunities while competitors engage first. Unlock the dataset to identify live opportunities that are an ICP match, have high purchase intent and where you have a high win probability.
✨What integrations does MarketSizer offer?✨

Access subscription intelligence wherever you work.

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Frequently Asked Questions

What makes MarketSizer different from other intent tools? 
Does MarketSizer work with my CRM? 
How does MarketSizer collect its data?
Can I use MarketSizer without a CRM integration?