WolframAlpha
Wolfram Group LLC
wolframalpha web
Fh Technology
WolframAlpha Classic
Cymath - 數學問題求解器
Cymath LLC
Wolfram Cloud
Mathway
Chegg, Inc.
微軟數學求解器
Microsoft Corporation
Maple Calculator: Math Solver
Maplesoft
Nerd AI - Tutor & Math Helper
Codeway Dijital
All-In-One Calculator
allinonecalculator.com