At Blockchair we recently launched a Zcash explorer with full API support. We support deep sorting and filtering functionalities for transactions and blocks. We also support xPubs, transaction broadcasting, PDF-receipts, charts and have also added Zcash into our release-monitor.
What is important to know, is that we are fully private and do not store or share any user data, and do not track users. We also support Zcash on the Tor network for even better privacy. The onion links are as following:
We don’t have python clients available. Just the REST API.
There is a free limit on the API of 1440 requests per day, and we have API plans available on the website. Though, sometimes we offer discounts for specific projects that are open-source or non-commercial.