1) Obfusats: Complicating Lightning traffic analysis using cashu mints and obfuscation
Discussion
2) Mandel: Scaling Lightning privacy with OpenID Connect
3) Nuts are pure signal: Signal is an open source project. We replaced its "mobilecoin" integration with a cashu wallet, while still retaining the mobilecoin UI.
4) Glacier Wallet: Send your bitcoin to the future creating time-locked transactions with CHECKTIMELOCKVERIFY