What can be used to write a parser for online stores in Bitrix, the script is based on?

Question

1C-Bitrix

Hello,
I found cloud parsers - online download of goods - but of poor quality. Few features, no branded products.
I decided to make the parser myself, is there a basis on which to do so as not to write from scratch?
It is necessary to import with product offers to Bitrix.
Important!!!
Data must be imported into Bitrix, that is, in the format - two files - with goods and with product offers

Answer 1

Well, at least bitra has an http client ; puffy has a DOMDocument class. Of course, let's just keep quiet about the effectiveness of both)