Alternatives to Timezone Bot

A Telegram front-end for Wolfram Alpha's computational engine — ask it a calculation, a unit conversion or a factual question with /wolfram and get a real computed answer, not a search-result link.

A bilingual English/Russian unit converter with a clean category menu — pick length, weight, temperature or another category, then convert with a couple of taps or the /units command.

A no-frills unit converter — type something like "100 ft to m" and get an instant answer covering length, area, volume, weight, temperature, energy and speed. Free and open source.

Send any arithmetic expression with parentheses, like "(12+8)/4*3", and get the answer back instantly. No commands, no menus — and it already has close to 30,000 monthly users.

A "programmable" calculator bot that understands full Python-style expressions plus the math, random, datetime, json and re modules — for anyone who wants more than basic arithmetic in a Telegram chat.

An inline calculator — type @mathcalcbot and an expression like sin(60)*sqrt(16)/.3 in any chat, and a ready-to-send result pops up without ever opening the bot itself.

A lightweight inline calculator that also remembers variables — set x = 5 once, then reuse x in later expressions across any chat.