MatterLabs is team behind zkSync and they are supported by Ethereum Foundation https://matter-labs.io/
They managed to raise $458 M. from very well known VC.
Seed round — $2M
Series A — $6M
Series B — $50M
Strategic — $200M
Series C — $200M
In this article we will show best projects to interact with, to be eligible for potential airdrop.

Bridges

https://bridge.zksync.io/ (OFFICIAL BRIDGE)
https://www.orbiter.finance/
https://symbiosis.finance/
https://celer.network/
https://www.bungee.exchange/
https://www.layerswap.io/
https://meson.fi/
https://www.poly.network/
https://xy.finance/
https://omnisea.org/
https://stargate.finance (coming soon)
https://www.connext.network/ (coming soon)
https://hop.exchange/ (coming soon)
https://li.fi/ (coming soon)
https://across.to/ (coming soon)

DeFi projects

https://syncswap.xyz/
https://app.mute.io/swap
https://app.mav.xyz/
https://app.velocore.xyz/swap
https://rewards.eralend.com/ (was hacked) (on hold)
https://izumi.finance/trade/swap
https://spacefi.io/
https://zksync.satori.finance/
https://onchain.trade/
https://xy.finance/
https://app.overnight.fi/stats?tabName=zksync
https://vesync.finance/
https://ezkalibur.com/
https://symbiosis.finance/
https://www.unidex.exchange/
https://fi.woo.org/
https://interport.fi/
https://wagmi.com/
https://basilisk.org/

Marketplaces and notable NFT collections

Marketplaces
https://element.market/zksync
https://kreatorland.com/
NFT
https://zkns.domains/
https://element.market/collections/libertas-omnibus-collection (official collection from zkSync)
https://element.market/collections/zkape
https://element.market/collections/zkpengz
there is more collection that you can find on marketplaces.

Extra tools

https://thirdweb.com/zksync-era (you can deploy smart contract and create your own nft collection)
https://zkgastracker.com/ (check gas fees in zksync era)

More ecosystem projects

https://ecosystem.zksync.io/

Dashboards to check your wallet activity

https://dune.com/stace/zksync-era
https://dune.com/angry/zksync-era-wallet-rank

Explorer

https://explorer.zksync.io/
Interact with this projects on zksync and increase your chances for potential airdrop. Try to stay active for several months and make 30–50 transactions.