My two latest inventions are Node Faker, which simulates bitcoin-cli and bitcoind in the browser (via javascript), and Wild Explorer, which is a block explorer that talks to Node Faker to get its blockchain data
For more info, see their respective githubs:
Node Faker:
Wild Explorer: 
GitHub
GitHub - supertestnet/node_faker: Emulate bitcoind and bitcoin-cli in the browser
Emulate bitcoind and bitcoin-cli in the browser. Contribute to supertestnet/node_faker development by creating an account on GitHub.
GitHub
GitHub - supertestnet/wild_explorer: A bitcoin block explorer built on top of my node_faker project
A bitcoin block explorer built on top of my node_faker project - supertestnet/wild_explorer

Why are miners dumping Ocean? I can't say for sure, but if I had to guess, I would guess it is because some of Ocean's major personnel (Luke Dashjr, Bitcoin Mechanic) are seen as champions of a controversial UASF called BIP-RDTS.
(Weirdly, I am also seen as a champion of this proposal, even though I have publicly stated my opposition to it several times.) Miners may be worried that Ocean will start enforcing this soft fork and they could end up on a bitcoin fork with a minority of hashrate.
But it's sad because Ocean is the only pool on bitcoin that currently lets miners mine their own block templates, other than some "solo pool" options. There are two other pools -- Braiins and Demand Pool -- which have *said* they will offer this feature at some point, but they do not seem to currently do so.
As a result, if you are a miner and want to mine your own block templates, Ocean is currently the only way to do it in a semi-normal pooled setting. But there may be a UASF stigma associated with them now, and many miners seem to be abandoning them. Hopefully Braiins Pool starts offering miner-controlled templates soon.
