We’ve published the OneCatalog plugin ecosystem on GitHub: github.com/OneCatalog. One shared integration standard, many platform implementations — all open source.
At its core is onecatalog-standard — the canonical, platform-agnostic standard (API contracts, domain mapping, invariants, background queue, porting checklist). The WooCommerce plugin is the reference implementation; the 1C extension and a 1C-Bitrix module are already there.
Ports for 18 more platforms — Bitrix24, PrestaShop, OpenCart, Magento 2, Shopify, MoySklad, RetailCRM and others — are already designed and on the roadmap. Watch, star or contribute on GitHub.