Which accounting software integrates with the most business apps?

QuickBooks Online appears to have the broadest business-app ecosystem, with Intuit saying it integrates with over 800 popular business apps. (quickbooks.intuit.com)

That’s a strong lead among mainstream small-business accounting platforms, though app counts aren’t perfectly comparable: marketplaces may count listings differently, and availability can vary by country and plan. If you have particular tools or workflows in mind, check those specific integrations before choosing.

The answer depends on which directory you count, but Xero has the highest widely cited number, with QuickBooks Online close behind.

• Xero: Its own app integrations page lists over 1000 apps across categories including payroll, payments, inventory, e-commerce, CRM, time tracking, and more. All listed apps are Xero-certified, so the count reflects vetted apps.
• QuickBooks Online: Most sources put it at roughly 750 to 800+. One review says QuickBooks Online, with 750+ third-party connectors in its marketplace, and another cites over 800 powerful third-party applications. One 2026 source claims the QuickBooks App Store lists more than 3,000 integrations, but I couldn't verify that figure against Intuit's own listing, so I'd treat it with caution.

Some sources give QuickBooks the edge in the U.S. specifically. One argues that QuickBooks Online leads on integration depth and U.S. SMB coverage, while noting that Xero's app store lists approximately 530 apps for U.S. buyers.

Raw counts are self-reported and vary by region and directory. Some commentators point out that a platform may advertise hundreds or thousands of integrations, but only five or six may matter to your business. If you have specific tools in mind, check that they're listed in each platform's marketplace.

Xero is widely recognized for having one of the most extensive and deep integration ecosystems in the accounting software market.

While exact numbers can fluctuate as new apps are added and others are retired, here is how the primary contenders generally compare in terms of their app marketplaces:

• Xero: Consistently highlighted for its large ecosystem, Xero boasts 1,000+ integrations. It is frequently cited as having a "deeper" app marketplace, making it a top choice for businesses that rely on a complex "tech stack" of specialized tools for inventory, CRM, payroll, and e-commerce.
• QuickBooks Online: Also features a very large and robust ecosystem, typically cited as having 750+ integrations. While it has fewer total apps than Xero, QuickBooks often compensates with a stronger, more established network of US-based accountants and specialized tax/lender integrations.
• FreshBooks: Designed primarily for freelancers and service-based businesses, FreshBooks has a smaller app marketplace—generally around 100+ integrations. This is usually sufficient for its target audience but may be limiting if you require a highly complex, automated business ecosystem.

Key Considerations for Your Choice

While the number of integrations is a helpful metric, the "best" software for your business often depends on other factors:

• Your Tech Stack: Check if the specific tools you currently use (e.g., a particular CRM, inventory manager, or payment gateway) have a direct, high-quality integration with the accounting platform.
• Accountant Preference: In many cases, it is more efficient to choose the platform your accountant already prefers and knows well, as this can significantly reduce onboarding time and errors.
• Business Complexity: If your business is scaling rapidly, you may prioritize "deep" integrations—those that allow for bi-directional data sync (e.g., updating inventory levels and customer records automatically) rather than simple, one-way data pushes.

If your primary goal is the broadest range of connectivity with third-party business apps, Xero is generally considered the industry leader in this category.

Xero appears to offer the most listed third-party business-app integrations, with over 1,000 in its app marketplace. QuickBooks Online lists over 800 integrations, so Xero leads by published marketplace counts. ¹²

Counts can vary by region and by what’s counted as an integration, so check whether the specific apps your business needs are supported.