IBC Viewer by LiveRaveN
Checks that IBC open in Namada and counterparty network
Page: https://services.liveraven.net/cosmos-testnets/namada/ibc-channels
Source: Discord message
IBC viewer by MELLIFERA
Checks that IBC open only on Namada side.
Page: https://ibc.namada-awesome.net
Source: Discord message
Hope will be improved. The time is never enough : )