Some useful tool for faster and more efficient AngularJs & SCSS application development.
Congo contains many useful tools for faster and more efficient Django application developing.
An API for PayU allowing to integrate online payments using PayU.
An API for BIR1 (Baza Internetowa REGON 1) allows requesting for polish company data providing KRS, REGON or VAT number. It requires private GUS API key.
An API for zip codes (postal codes) and addresses requesting. Optimized for polish addresses, however might work as universal tool.