AtlasFive

AtlasFive is a portfolio accounting product from Eton Solutions. Family office system combining data aggregation, entity management, general ledger accounting, portfolio management and reporting for single and multi-family offices. It is also listed under client reporting and data management. Buyside Fintech verified that Eton Solutions lists this product on the vendor's own website on 2026-10-11, and the page we read is linked below. We do not record how it is deployed, how it is priced, what it costs and the firm sizes it serves for this product, because Eton Solutions does not publish it; the table below shows those rows empty rather than hiding them. Practitioner reviews and questions about AtlasFive appear below, and anyone at a firm that uses it can add one.