I've seen it claimed that Couchbase should be on this list, but I've never seen a primary source which verifies that they were rejected from YC.
Whether that counts for Couchbase is another question.
(I guess it probably does)
And it's all ultimately the fault of the limited .com namespace.
NounVerb - Boost your charts (increase your metrics)
VerbNoun - Chart your boosts (monitor your improvements)
 - https://blog.blockcypher.com/what-adam-saw-that-sam-didnt-a0...
 - https://pando.com/2013/10/11/superhero-laundry-founders-laun...
EDIT - Citations
Don't ever let anyone tell you what you can and can't do. Which is to say, make your own way in this world.
Listening to people doesn't mean doing what they say.
"Did you apply to and get rejected by YC?" must be a common question many investors now ask of companies that aren't YC alumni.
Is this a guess or do you have anything to back it up? It seems really strange to me. An investor shouldn't be judging you based on the judgement of another investor.
You're right of course, but this happens all. the. time.
Investors and VCs are far from immune to herd mentality.
VCs love love love the joke of "We're supposed to be all about new unproven dynamic ventures and insight into the future, but we're so risk averse! lol!!!!"
Why not? Personally, when a company gets into YC, my opinion of that company goes up. Seems like that is just the rational Bayesian-updating thing to do.
You are of the opinion that this should not be the case, which may be correct. Nonetheless, this happens all the time.
3 signup forms (1 in a modal) for their newsletter (and an additional link to signup for the newsletter at the end of the post).
I even wrote a blog post about our rejection - https://blog.clevertap.com/the-future-looks-bright/
How many of them are paying?
They were prepivot (Kindrid Prints) and YC didn't like their idea
There must be some +ve energy between a startup & an investor. Timing is also everything. Investors can only invest in so many pet food startups. While a pet food startup is making money and is considered a success, that doesn't mean investors have to invest.
Investors sometimes walk away from a B-team founders of a startup no matter how successful the startup really is. A-team with B-plan is always prefered over B-team with A-plan.
Sometimes, Founders decide not take money from investors, if they believe that the investor may only bring money and without any intellect and/or networking.
With that said, the final transaction is not everything.