Practical software for small businesses.

Irrational Optimism LLC is an independent software company. We design and build web-based tools that help small businesses keep their operations organized.

Get in touch

What we do

Web-based tools

We develop browser-based software that small business owners can use from anywhere, without installing anything.

Digital products

We build focused digital products that solve specific, everyday problems for small teams.

Sold directly

Our products are offered directly to customers through our own websites.

Products

In development · PreviewIO Ledger logo: a book inside a cloud with the IO Ledger wordmark

IO Ledger

Bookkeeping and accounting software for small businesses, covering invoicing, expense tracking, bank reconciliation, and financial reporting. IO Ledger is currently in development and available as a preview.

View the IO Ledger preview →

Contact

Questions about our company or products? Email us at hello@irrational-optimism.com.