Railz

Rutter is a universal API that provides fintech companies, lenders, and B2B software providers with a single integration to access commerce, accounting, and banking data from merchants and businesses. Founded in 2020 and backed by a16z, Rutter targets modern fintech builders who need to read and write financial data across multiple platforms without building and maintaining individual integrations. Rutter Commerce supports e-commerce platforms including Shopify, WooCommerce, BigCommerce, Amazon, eBay, and Etsy—normalizing sales, orders, products, and customer data. Rutter Accounting covers QuickBooks, Xero, NetSuite, and Sage with read/write capabilities for invoices, bills, accounts, and transactions. Rutter Banking provides bank account access via Plaid and direct connections. The platform's write capabilities—the ability to push data back into accounting systems—differentiate Rutter from read-only aggregators. This enables use cases like automatic ledger entry creation, invoice syncing, and payment reconciliation. Rutter is popular with embedded lending companies that need merchant GMV data for underwriting, accounting automation platforms that sync transactions, and commercial cards that need to post expenses. Its Sandbox environment provides comprehensive testing coverage. Rutter's modern API design, competitive pricing, and fast support response have made it a preferred choice among YC companies and a16z-backed fintechs building the next generation of financial products.

Codat is a universal API platform that enables financial institutions, lenders, and fintech companies to access small business financial data from accounting software, banking, and commerce platforms. Founded in London in 2017 and backed by JPMorgan, American Express Ventures, and Index Ventures, Codat's mission is to make it easy for any business to access and analyze SMB financial data. Codat's pre-built integrations cover 50+ data sources including QuickBooks, Xero, FreeAgent, Sage, Plaid, Stripe, Shopify, and Square—normalizing the data from each into a consistent schema. Lend is Codat's lending automation suite, enabling lenders to pull accounting data, bank statements, and commerce data to automate underwriting decisions. Sync for Payables automates accounts payable workflows for businesses and financial institutions. Bill Pay enables suppliers and buyers to share invoice and payment data. Codat's synchronized data model keeps data fresh automatically, eliminating manual data collection. The platform is particularly popular with embedded lending, invoice financing, and trade credit use cases where real-time SMB financial data drives underwriting decisions. Codat's approach of normalizing heterogeneous SMB financial data reduces integration complexity from months to days. The company serves leading banks, fintechs, and business lenders including PayPal, Sage, and multiple UK challenger banks.

Yodlee is one of the original financial data aggregation platforms, founded in 1999 and acquired by Envestnet in 2015. With over 20 years of operation, Yodlee covers 21,000+ financial sources globally and serves major financial institutions, wealth management firms, and fintech companies. The platform's data coverage is among the broadest in the industry, including banks, credit cards, investment accounts, loans, insurance, retirement accounts, and bill payments. Yodlee's Financial Health APIs enable businesses to build personal financial management tools, lending analytics, wealth management platforms, and risk assessment applications. Data Enrichment cleans raw transaction data with merchant identification, category tagging, and spending insights. Yodlee Risk Insights provides cash flow analytics for credit decisioning. The platform's Aggregation-as-a-Service model handles the complexity of screen scraping, OAuth connections, and API integrations across thousands of institutions. Yodlee's open banking solution supports consent-based data sharing compliant with GDPR and other regulations. The Envestnet Yodlee Data Intelligence platform provides insights across wealth management and banking clients. Yodlee is a legacy player facing competition from newer API-first platforms, but its breadth of coverage and long institutional relationships make it relevant for enterprise deployments. The platform processes billions of API calls monthly across its customer base.