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Every day, SaaS buyers explore alternatives to the tools they already use. A trial starts here, a switch happens there. Those small evaluation moments add up to a real picture of how the market is shifting long before it shows up in reports.
But most teams only discover this movement after the fact. A churned customer. A lost renewal. A deal that quietly slipped because a competitor appeared late in the cycle. Competitive intelligence ends up buried in Slack threads, scattered rep notes, or slow-moving win–loss reviews. By the time anything surfaces in a dashboard, the story has already changed.
What has been missing is a way to see the market as it moves: who buyers explore next, which vendors gain or lose consideration, and how evaluation patterns shift across an entire category.
The Vendor Alternatives Index by MarketSizer was built to reveal exactly that.
MarketSizer tracks ongoing market movement across Helpdesk, Live Chat, and Sales Enablement tools. Our Vendor Alternatives pages show who buyers are evaluating next, where customers are switching, and how competitive match ups are playing out over time.
Most “best alternatives” articles are static lists. They are typically based on feature comparisons, opinions, or dated round ups. Useful sometimes, but they rarely reflect what is actually happening in the market right now.
Our Vendor Alternatives pages are different. They are designed for the people shaping competitive and commercial strategy inside SaaS companies, including Product Marketing, Competitive Intelligence, RevOps, Partnerships, Sales, and Leadership.
Most vendor pages include three practical views:
1) Current trial activity
A domain-level view of who is trialling alternatives right now, based on observed evaluation behaviour.
2) Switching and churn patterns
Where customers moved over the past 12 months, and which competitors gained share.
3) Head to head outcomes
How a vendor performs in direct evaluation match-ups when buyers compare tools side by side (availability varies by vendor and data coverage).
These snapshots show the direction of travel in the market, not just the tools on the shelf. If you want the expanded view behind the snapshot, you can request access on the page and receive access to the full vendor dataset inside the MarketSizer app.
If you are responsible for revenue growth, market strategy, or competitive positioning, these pages help you:
This is especially valuable for Product Marketing and Sales leadership teams who want a shared, objective reference point for battlecards, talk tracks, and competitive planning.
The public pages are a snapshot.
If you work at one of the vendors listed above, you can request access from your Vendor Alternatives page to view the expanded dataset inside the MarketSizer app, including segment and regional breakdowns where available.
Think of these pages as a live snapshot of buyer behaviour. They help you see what buyers are evaluating and where switching is happening so you can understand the direction your market is moving.
They are most useful for patterns and trends, not precise predictions about any single account.
A simple way to interpret the page
What to keep in mind
How is this different from “best alternatives” blog posts?
Most alternatives articles are static round ups based on features, reviews, or opinions. Our pages show actual evaluation behaviour: who is trialling alternatives, where switching is happening, and how competitive match ups play out in practice. It is a view of market movement, not a list of tools.
How often is the data updated?
Each vendor page updates on its own cadence. The timeframe is always shown directly on the page (for example, “current trials” or “past 12 months”). The index here simply links to the live versions; the data itself updates on those pages.
Can I get a breakdown for a specific segment or region?
Yes. When you request access from your vendor page, you can specify the segment, region, or customer profile you care about. We will share the expanded dataset where available.
Does this replace internal win-loss analysis?
No. These pages provide external market signals, not deal level reasoning. They are best used alongside your own win-loss data, sales insights, and customer feedback.
What should I do if the data looks incomplete for my vendor?
Coverage varies by category and vendor. If a view is missing or appears lighter, it may be due to available data for that specific vendor. Requesting access will show you the fullest dataset we can provide.
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