ZChat (Liberland): support.
Zec-pay.com: This seems to me to basically defeat the point of Zcash’s shielded features. It just is not difficult to use a wallet that directly supports shielded transactions. The BTC-to-ZEC functionality is a little more useful, but the website appears to be acting as a money transmitter (because it has temporary custody of the funds sent to it), while saying that it “never asks for sign-ups or KYC”. It doesn’t appear to have attracted regulatory attention but it easily could.
Maya Protocol Advanced Shielded ZEC Support: as I said here, I strongly support this grant.
ZK Email in Halo 2 (not sure why “ZChat” is also in the title): The paper is very short and I would have appreciated more detail. I am skeptical of the security assumptions: DKIM is not really designed to authorize monetary transfers.
Zcash.me: I’m generally very skeptical about this kind of centralized platform. What stops this becoming another Lavabit?
Pepper-Sync: This is a pretty expensive grant. Also wasn’t ZExCavator supposed to already be covered by another grant? Grant Application - Zcash Extensible Wallet Interchange Format (ZeWiF) · Issue #3 · ZcashCommunityGrants/zcashcommunitygrants · GitHub says:
Blockchain Commons and Zingo Labs will: collect and survey existing wallets (a wide-ranging survey, with a focus on zcashd and zecwallet); design an interoperable and extensible wallet interchange format that can preserve and secure data from zcashd and other wallets including legacy zecwallets; create Rust crates that import data into and export data from that interchange format; and produce a ZExCavator tool that recovers buried ZEC from old zecwallets.
I think ZExCavator cannot be cited as contributing to the scope of this grant, because the ZeWIF grant was supposed to fully pay for Zingo Labs’ part in its development (see deliverable #4.1). @hanh also points out other potential coverage duplication here.