Celer enables generalized off-chain smart contracts and transactions. This allows a 20,000-fold reduction in transaction latency, no transaction fees, and incentive-aligned cryptoeconomics. The Celer interface is used to integrate layer-2 scaling and on/off-chain smart contracts with applications. Celer is designed to be blockchain-agnostic and flexible; this allows for quick integrations with layer-1 blockchains.
Eleven APIs have been added to the ProgrammableWeb directory in categories including DevOps, Color, and Supply Chain. An API for a color generation tools is included today, as well as an API for feeds about satellite imagery of planet Earth. Here's a rundown of the latest additions.