is ZEL going to be listed on coinmarketscap or similar services?

I suspect it will be added by the end of the month. I also expect it to be shown on sites like whattomine.com as well.

Not unless this gets listed on a big exchange with an API that whattomine supports.

Probably True. https://www.crypto-coinz.net/crypto-calculator/
crypto-coinz.net supports stocks.exchange so they might list it rather soon

Actually it does list it currently

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