I would look into some smaller Private Equity firms that invest in the software space. You'd be surprised at the number of shops (regardless of size, even) that

I would look into some smaller Private Equity firms that invest in the software space. You'd be surprised at the number of shops (regardless of size, even) that make non-LBO investments. You'll find some pretty unique sorts of investment strategies, and likely find a firm that will supply an amount of capital lower than what a VC would put up but higher or with better terms than a bank. Also, a PE shop would likely provide some sort of advisory support. Which, even if it is minimal, can have immense value for you.