Called Lightning Charge, the system complements Blockstream’s existing Lightning Network implementation "c-lightning" and is intended to make life easier for developers creating Lightning-powered payments applications, the firm said.
According to a company blog post
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Lightning Charge is written in node.js and its features can be accessed using an API via its JavaScript and PHP libraries, both of which are part of Blockstream's Elements Project.
"Web developers will ... get expanded functionality such as currency conversion, invoice metadata, streaming payment updates, and webhooks," the post states.
Read Full & Source : https://www.coindesk.com/blockstream-launches-micropayments-processing-system-for-bitcoin-apps/