In particular in venture capital and privaty equity transactions, keeping track of the various different classes of stock and notes is a challenge. Cap table management software helps companies and law firms to keep control of who owns what shares, issued in which round. Investors can see their entire holdings across different portfolio companies. Often times captable management software incorporates some form of equity valution offering (in the US 409A valuation). Companies in the space include Carta and LTSE Equity.