Avail is a project primarily focused on data availability, including placing orders, publishing transactions, and verifying block data availability. In contrast to "monolithic" blockchains, Avail is a modular blockchain that separates components such as consensus, security,...

Celestia (TIA) is a modular blockchain network, providing developers with the infrastructure to build and maintain their own blockchain networks. Specifically, Celestia allows other blockchains to use it as a consensus layer and data provider.