How many bitcoin clones are out there?
I mean people changing the name, the hashing algorithm and a few more parameters and creating a new coin that just keeps on copying bitcoin's source code in eternity?
Is there a list of those somewhere?
My favourite today is mapofcoins.com
You can browse alt-coins list here: coinwik.org
You can compare coins here: coinplorer.com/Hardware/CurrenciesComparison
There is forum, cryptocointalk
See, here coingen.bluematt.me and +10 hidden market places with constructors.
You can't find full list of all alt-coins. It doesn't exist.
Number of alt-coins grows so fast. Probably, every day there are appear 10-20 alt-coins. This is unstoppable trend. In the Jan of 2015 there will be more than 1000 alt-coins in one hundred percent.
See, another one constructor COIN NUKE | COIN CREATION SERVICE | +EVERYTHING FOR YOU COIN +ESCROW +TOOLS
A list of relevant cryptocurrencies and their differences can be found on the wiki. Also (almost) every new altcoin starts with a thread on Bitcointalk, where all necessary information should be stated in an announcement. See also this article about alternative chains on the wiki.
Creating a coin is so easy that it would be impossible to list them; people could create a coin and set up nodes with their friends, without talking about it online.