Besides Ethereum at 15 second blocks you have
BitShares at 3 second blocks
Next at 12 second blocks
Counterparty at 20 min blocks
all have other coins/projects either building on top of their platform or selling their equity tokens in their decentralized exchanges:
for instance:
Ethereum has Augur
BitShares has OpenLedger
NXT has Jinn
Counterparty has LTBcoin
One thing you need to be aware of when buying equity in these communities is how many members there are in each:
Ethereum, BitShares, and NXT have hundreds of thousands of posts from community members around the world which is why they have high market caps:
Ether- https://www.reddit.com/r/ethereum/
BitShares - https://bitsharestalk.org/index.php
NXT - https://nxtforum.org/
which is why they are the Gold, Silver, and Bronze of Bitcoin2.O platform cryptos
Don't be fooled by fake façades, or you will be left all alone holding the bag
http://www.scvhistory.com/gif/lw2145k.jpg
https://i.imgur.com/ofBhDUx.jpg
At least when ETH, BTC, DOGE, etc fall inn price, there are angry mobs of burnt investors.
How many original community members are now holding the Expanse bag:
(hint: none)
(you are now one of the largest EXP shareholders in the world)
(congratulations, all the EXP belong to only you)
http://forum.expanse.tech/
But don't feel alone, the Crypti dev's left to form Lisk for people like you who like to join communities of only 2 members.
Here's a pro tip:
The bigger the community, the bigger the market cap (case in point BTC)