Qualify every opportunity.
MarketSizer shows B2B revenue teams which accounts are actually in-market, which fit your ICP, and which you are historically positioned to win - so every rep focuses effort where it matters.
GTM teams waste time on the wrong accounts.
Most sales and marketing effort fails because teams cannot answer three questions before they engage: Is this account a good fit? Are they actively evaluating right now? Can we actually win this deal? MarketSizer answers all three - before your first outreach.
We show you qualified opportunities you can trust.
Every account MarketSizer surfaces is backed by evidence across three critical dimensions.
Purchase Intent
Real signals from trials, churn, and renewals.
- Trial detection across 154 vendors
- Competitive switching moments
- Daily refresh with max 5-day lag
ICP Fit
Companies that match your best customers.
- ICP evaluated from 154 vendors
- Tech stack patterns matching your best customers
- Historical overlap with winnable scenarios
Win Probability
Focus where you have proof of success.
- Historical win likelihood from 24M+ subscription outcomes
- Incumbent displacement patterns
- Tier-to-conversion outcomes
From discovery to deal
in one workflow
Four ways GTM teams use MarketSizer from first signal to closed deal.
Discover in-market accounts
MarketSizer surfaces accounts actively evaluating alternatives - trialling new tools, showing buying signals in the live chat, CRM, or ITSM category. No more cold outreach to accounts that are not ready.
- See tech stack, trials, and subscription changes instantly
- Spot competitor switching moments and in-market signals
- Daily refresh with max 5-day lag on new signals
Prioritise by fit and intent
Not every in-market account is worth pursuing. The Opportunity Score combines ICP match, purchase intent, and win probability so your team works the accounts most likely to close - not just the most recently active ones.
- ICP scoring benchmarked against 154+ vendors
- Composite Opportunity Score ranks every account
- ACV estimates before your first conversation
Engage at the right time
Purchase Intent tells you when an account is actively evaluating - not just theoretically a fit. Historical context shows how accounts typically evaluate and adopt tools in your category, so you reach them at the right moment.
- Trial and churn signals updated daily
- Competitive displacement timing patterns
- Historical context on evaluation and adoption cycles
Track competitive context
Win Probability is calculated from 24M+ historical subscription outcomes - specific to your vendor, your target segment, and the current competitive scenario. Know the deals you are positioned to win and the ones to deprioritise.
- Win likelihood by vendor, segment, and signal type
- Incumbent displacement patterns by category
- 5-year switching propensity data
Your market is mapped.
Your opportunities are waiting.
15 minutes. No commitment. We'll show you the accounts in your market that are actively evaluating right now.
No credit card · Tailored to your ICP · Live data, not a slide deck