Autodesk (ADSK, market cap US$45 billion, founded 1982) is a bootstrapped company founded by software engineers with their own money. Mostly mainframe UNIVAC systems programmers in their 30s. No VC funding; the IPO came well after profitability.
Oi, hindsight is great. The '87 high was about $3.50. ADSK is sitting at $210 today or $2.2B for that 500k investment.