The website with the tenders?

zakupki.gov.ru
sberbank-ast.ru
That's what you mean?

fabrikant.ru — registration, subscription and access to the database is free. Pay only for the participation in the auction. Read more here

You can go directly to suppliers and track:
\rwww.rostelecom.ru/about/tender/
\rwww.transneft.ru/torgi/all/
\rwww.gazprom.ru/tenders/
\rwww.rusnano.com/about/purchases
\rzakupki.rosneft.ru/zakupki
\rwww.vtb.ru/group/purchases/all/
\rwww.sberbank.ru/moscow/ru/about/concurs/current/
\rtender.rzd.ru/
\rwww.sukhoi.org/company/torg/auction/
\rwww.lukoil.ru/tenders/tender__list_6_.html
\rzakupki.rosatom.ru/
\rzakupki.rushydro.ru/default.aspx
\rzakupki.rostechn.ru/
And many many more

If the question is still relevant, you can try zakupki360.ru Nice interface, good database of procurement

Here is another option free

available for free, Regina and export organizations and tenders in xls https://navodki.ru