Alternatives to Currency Converter

Sends the current and official Bank of Russia rate for the dollar and euro, plus other CBR-quoted currencies, oil and gold, sourced from the Sberometer project. Free, Russian.

A longer-running currency conversion bot with "advanced features" per its own description, plus a linked news channel and support chat. Rates are explicitly for information only. Free, English.

Inline-only currency converter by an independent developer: type @crcvbot plus an amount and two currencies in any chat to get an instant conversion. Free, English, works only inline (no direct chat with the bot).

A no-frills currency bot: pick a currency in a menu or type an amount and it converts it using CBR-style reference rates, with a simple chart. Independent project, not an official Bank of Russia service. Free, Russian interface.

Currency converter in a chat: send "100 usd to eur" or a pair and get the current rate, with inline mode for quick answers in any conversation. Free, English.