With more startups winding down lately [1], I was wondering:<p>What are some of your favourite startups that unfortunately didn't work out? Whether your involvement was as a builder, user, or just a fan of their mission.<p>Bonus points if the founder has written a thoughtful retrospective / post mortem that documents the decision and explains why their idea was ultimately not viable as a business.<p>[1] From Carta: Startup shutdowns up 58% in Q1 2024 compared to last year https://carta.com/blog/startup-shutdowns-q1-2024/
FourSquare, or rather location-based social networking in general.
Bummer that this category of apps did not work out, had real potential to connect people locally.
I was a big fan of Sparrow (acquired by Google) and DarkSky (acquired by Apple).<p>I miss them both and think of them often. Sparrow truly changed the way I used email. Once it was shutdown, I went back to the trudging through it.
I was hoping that someone would come along and pick up the technology hinted at by UltraConductors[1]. Image cables 10,000,000 times as conductive as silver at room temperature, made out of plastic!<p>[1] <a href="http://www.superconductors.org/ultra.htm" rel="nofollow">http://www.superconductors.org/ultra.htm</a>
To start, I really liked the idea behind Muse, but they couldn't find PMF: <a href="https://adamwiggins.com/muse-retrospective/" rel="nofollow">https://adamwiggins.com/muse-retrospective/</a><p>And more recently, buildspace :(<p>Nothing but respect for all the hackers & founders who tried to put something new out there
I forget their name. You gave them access to your mailbox. They would pick up your mail, digitize it, and give you an email like inbox for your physical mail. It even had a spam filter. It was awesome.
I don't know if it was actually a startup but there was once some idea of Wikipedia starting a search engine based on serving the customer rather than serving ads. I thought it was a great idea.