Phoenix is a self-custodial Bitcoin wallet using Lightning to send/receive payments. (by ACINQ)
I haven't used Muun, but I'm assuming the process is similar to ACINQ's Phoenix Wallet.
NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.
Help - Using Lightening as a newbie tourist in El Salvador
1 project | reddit.com/r/lightningnetwork | 5 Jun 2022
I paid 420 sats for beer via lightning last Saturday at a German Bitcoin meetup
2 projects | reddit.com/r/Bitcoin | 30 May 2022
A few useful/interesting projects
3 projects | reddit.com/r/Bitcoin | 22 May 2022
12 years ago Laszlo Hanyecz, the guy who also invented GPU mining and freely shared his invention with the Bitcoin community, bought 2 pizza pies and paid 10,000 bitcoin. This was the first commercial transaction on Bitcoin network ever recorded.
2 projects | reddit.com/r/Bitcoin | 22 May 2022
How will the lighting network allow bitcoin to be used for small one off payments?
1 project | reddit.com/r/lightningnetwork | 4 Apr 2022