Bookkeeping and accounting software: 17 vendors compared

Bookkeeping software spans the two largest platforms in accounting, QuickBooks and Xero, and the newest: AI agents that do the books for firms and small businesses. The startups here split between tools sold to accounting firms, such as Accrual, Clark and Double, and tools sold direct to businesses, such as Kick, Uplinq and Collective. Every vendor below has a full profile.

The vendors

Startups first, ordered by funding raised, then the established vendors they compete with

CollectiveStartup · $150m raisedBack office for one-person businesses in the US: entity formation, S corp election, bookkeeping, payroll and tax filing in one subscription with a named accountant, now adding AI bookkeeping through the Open Ledger acquisition.→FinaloopStartup · $55m raisedReal-time accounting for e-commerce and consumer brands: replaces the accounting software, the service and the inventory tool with one platform that produces reconciled, GAAP-ready books from Shopify, Amazon and payment data.→PuzzleStartup · $50m raisedAI-native general ledger for startups and small businesses with real-time books and a generous free tier; its accounting-firm business and founder moved to Accrual in 2026 while the direct product continues.→IntegralStartup · $35m raisedBerlin company delivering accounting, tax and payroll to German SMEs as a service run by AI agents with licensed tax professionals signing off, priced as a flat monthly fee instead of a traditional firm.→KickStartup · $20m raisedSelf-driving bookkeeping for small businesses and their accountants: free to start, automated categorisation and reconciliation across unlimited entities, backed by Felicis, GV, General Catalyst and the OpenAI Startup Fund.→UplinqStartup · $18m raisedAI bookkeeping and tax for US small businesses, with bookkeepers reviewing the agents' work, sold direct and to the accounting firms and platforms that serve multi-entity owners.→TruewindStartup · $17m raisedAI bookkeeping and month-end close for venture-backed startups and the accounting firms that serve them: transaction coding, reconciliation of unstructured data and anomaly detection, backed by Thomson Reuters Ventures.→NenoStartup · $7m raisedAmsterdam company offering accounting, tax and payroll as an AI-native service for European SMEs, built on a real-time agentic ledger that pulls in bank, card, bill and receivables data.→OutminStartup · $4m raisedDublin company combining an AI bookkeeping platform with qualified accountants, sold to small businesses directly and to accounting firms that use it to run client bookkeeping.→EmblematicStartup · $2m raisedBerlin startup whose AI agents learn a company's chart of accounts, cost structure and tax rules and apply them to new transactions: extraction, categorisation, journal entries and internal checks for mid-market finance teams.→BasisStartupAI agents for accounting firms that carry out complete workflows, from journal entries and reconciliations to a full 1065 tax return, inside the firm's existing systems.→ClarkStartupNew York company whose agent, Ava, works inside the accounting systems firms already use to do data entry, bank reconciliation and month-end tasks; the company now trades as Clark.→DoubleStartupMonth-end close and practice management for bookkeeping and accounting firms on QuickBooks Online and Xero, used by more than 4,000 firms; renamed from Keeper to Double in October 2025 after a trademark case.→DextBookkeeping automation for accountants and bookkeepers: receipt, invoice and bank data capture and coding into Xero, QuickBooks and Sage, founded in London as Receipt Bank and owned by IRIS Software Group since December 2024.→Intuit QuickBooksThe dominant small business accounting platform in the US, part of Intuit alongside TurboTax and Mailchimp; QuickBooks Online accounting revenue grew 20% in fiscal 2026 and Intuit passed $20bn in total revenue.→XeroCloud accounting platform for small businesses and their accountants with 4.9 million subscribers, founded in New Zealand, listed in Australia, and now the largest challenger to QuickBooks in the US after buying bill pay company Melio.→Zoho BooksCloud accounting from Zoho, the bootstrapped Indian software company with more than a million paying customers across its suite; Zoho Books competes on price and on integration with Zoho's CRM, payroll and inventory apps.→

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Updated September 2026 · Part of Accountio’s accounting technology coverage