The accounting-side connectors are real and maintained: NetSuite, Xero, and Sage Intacct each get a dedicated native sync comparable to the QuickBooks one, pulling in the chart of accounts and pushing approved reports out as the appropriate accounting entry.
Expensify's Uber for Business integration is a narrower but genuinely useful connector: ride receipts from an employee's Uber for Business account import directly into Expensify without anyone forwarding a receipt email.
Salesforce is the clearest gap. There's real search demand for an Expensify-Salesforce connection, but Expensify doesn't ship a native one. Businesses that need expense data tied to a Salesforce opportunity or account, billable client expenses that should show up on the deal record, for instance, are building that bridge themselves or going without it.