BitmentOS: the AI operating system for accounting firms

BitmentOS is the operating system an accounting firm runs on. Clients, contacts, email, calendar, phone, messages, meetings, projects, files, signatures, forms, bookkeeping, tax prep, payroll and reports are apps in one system, and every one of them reads the same client context. Nothing is explained to the system twice.

A private cloud for every firm

Every firm's BitmentOS is a dedicated, network-isolated environment: its own network, its own database, its own address at a bitment.co subdomain, with PII protection built in. Nothing is multi-tenant. That isolation is the data-privacy guarantee a firm's clients are relying on.

AI that knows the client

Chat, the assistant and AI agents work across every app with the context of the whole firm. Agents can use several model providers, including Anthropic, AWS Bedrock, OpenRouter and self-hosted Ollama, so when one provider is down, work routes to another and the firm keeps working. The Tokens app shows who spent what, through which provider.

Engineering included

The engineers who build BitmentOS work directly with each firm to map its workflow, migrate its data and integrate the tools it cannot live without. That engineering time is part of the license. Firms join in cohorts of five.

Signed and notarized desktop apps are available for Mac and Windows. Book a demo, see every app, or read the documentation.