Most people don't know privacy protocols exist beyond @monero and @Zcash.
Here's a list of 12 under-the-radar privacy protocols you might find useful:
1. @RAILGUN_Project – lets users interact with normal DeFi apps from a private balance
2. @HoudiniSwap – swaps and routes assets across chains to reduce your on-chain footprint
3. @SecretNetwork – lets you use apps on-chain without exposing your data publicly
4. @PirateChain – forces all transactions to be private with no public option
5. @firoorg – breaks transaction links without requiring a trusted setup
6. @penumbrazone – enables private swa