Comprehensive list of all rollup-as-a-service solutions:

The OGs: Cosmos SDK and Substrate

Eclipse: SVM and other VM RUs on Cosmos
Dymension: RollApps on Cosmos
Saga: Chainlets on Cosmos


Rollkit by Celestia: Sovereign RUs or normal RUs on Celestia DA
Sovereign Labs: Sovereign ZKRUs using Celestia DA and RiscZero



Slush: L3s on Starknet

Constellation: ORUs on Ethereum

Stackr: TBD, ETH India winner

Artesi: "full stack" RUs with explorer and MPC wallet included

Alt Layer: TBD, related to Substrate

Conduit: TBD https://canhrau.com/wp-content/uploads/2022/04/nhung-hinh-anh-phong-canh-dep-nhat-hinh-16.png