An ecosystem of people who are building bootstrapped, non-VC-funded products.

Patrick McKenzie (patio11), who famously built and sold his "Bingo Card Creator", and blogged about the process, is a "prototypical" Indie Hacker.

The ecosystem consists of communities like [1] and [2], podcasts (search for "Indie Hackers"), and conferences like [3]

[0] https://training.kalzumeus.com/newsletters/archive/selling_s...

[1] https://www.indiehackers.com/

[2] https://getmakerlog.com/

[3] https://microconf.com/