>I suppose there's only so long a one person company can go on for.
These were my thoughts exactly.
These people got a an entire career out of independently working on software they (presumably) enjoyed developing. And if they open source it, the product lives on. It's not sad, it's great! Some of us should be so lucky.
MicroCAP was launched in 1982.
Stephen R. Whiteley who wrote WRCAD is 66.
I suppose there's only so long a one person company can go on for.