Cryptocore has released a Firo web wallet!
https://firo.ccore.online/web_wallet
They also have a working Firo explorer at
https://firo.ccore.online/
Remember web wallets should not be used to store big amounts!
If you like his work, consider donating to aKDLychbAMwFGfpv21XiTX96VR5MEmLkYL