Direct fiat-to-L2 onboarding
L2 compatible wallets
coinbase.com has integrated with Arbitrum and Optimism
kraken.com has integrated with Arbitrum
crypto.com has integrated with Arbitrum
binance.com has integrated with Arbitrum
kucoin.com has integrated with Arbitrum
huobi.ma has integrated with Arbitrum and Optimism
bybit.com has integrated with Arbitrum and zkSync
argent.xyz has integrated with zkSync
layerswap.io [Coinbase, Binance, Huobi, Okex, Kucoin] → [Arbitrum, Optimism, zkSync, Boba]
go.ramp.network/zkSync direct fiat to zkSync
global.transak.com direct fiat to Arbitrum and Optimism (not yet available in the US)
hop.exchange [mainnet, Arbitrum, Optimism] → [mainnet, Arbitrum, Optimism]
xpollinate.io [mainnet, Arbitrum, Optimism] → [mainnet, Arbitrum, Optimism]
cbridge.celer.network/#/transfer [mainnet, Arbitrum, Optimism, Boba] → [mainnet, Arbitrum, Optimism, Boba]
"gas on arrival" feature - you will always receive some gas tokens when your asset arrives on the other chain.
synapseprotocol.com [mainnet, Arbitrum, Optimism, Boba] → [mainnet, Arbitrum, Optimism, Boba]
anyswap.exchange [mainnet, Arbitrum, Boba] → [mainnet, Arbitrum, Boba]
mosaic.composable.finance [mainnet, Arbitrum] → [mainnet, Arbitrum]
app.orbiter.finance [mainnet, Arbitrum, zkSync] → [mainnet, Arbitrum, zkSync]
Only USDC is supported.
across.to [Arbitrum, Optimism] → mainnet
portr.xyz mainnet → Optimism
li.finance [mainnet, Arbitrum, Optimism] → [mainnet, Arbitrum, Optimism]
app.fund.movr.network [mainnet, Arbitrum, Optimism] → [mainnet, Arbitrum, Optimism] These two projects cross L2s and swap for other tokens, so you can exchange ETH on mainnet for DAI on Optimism; it’ll find the cheapest route for you.
Metamask - Arbitrum, Optimism
Coinbase Wallet - Arbitrum, Optimism
Argent - zkSync
Argent X - StarkNet
Rainbow - Arbitrum, Optimism
Frame - Arbitrum, Optimism
zkSync - zkSync
Numio - zkSync
imToken - zkSync, Arbitrum
Trust Wallet - Arbitrum
Coin98 - Arbitrum
Arbitrum - portal.arbitrum.one
Optimism - optimism.io/apps/all
zkSync - zksync.community/t/links-to-applications-making-use-of-zksync/15
You can also donate to projects on Gitcoin via zkSync.
You can also use Argent to buy, earn, stake, and trade on zkSync.
StarkNet - starknet-ecosystem.com
Boba - boba.network/ecosystem (scroll down)
Another way to see available dApps is to go to DeFi Llama and filter by the L2 you’re interested in. This may not include the newest dApps, but you can see the TVL in the most popular ones.
For DAOs, the most popular DAO tool Gnosis Safe supports Arbitrum.
These are specialized layer 2 rollups that do not support general purpose smart contracts.
dYdX - dydx.exchange
Loopring - loopring.org (L2 wallet and direct fiat onramp available now)
ZKSwap - zks.org
ImmutableX - immutable.com
Deversifi - deversifi.com
Sorare - sorare.com
Aztec - aztec.network
A rollup-centric ethereum roadmap, by Vitalik Buterin
Comparisons between L2s (TVL, types of risks)
The ultimate guide to L2s on Ethereum, by @DCbuild3r mirror.xyz/dcbuilder.eth/QX_ELJBQBm1Iq45ktPsz8pWLZN1C52DmEtH09boZuo0
The Grand Design, by @sassal0x
Fractal Scaling: From L2 to L3, by StarkWare
I only included live L2s - will update as more L2s go live.