Koinly is described as 'Automatically sync wallets and exchanges, track crypto activity, detect internal transfers, and generate capital gains, income, and tax reports in minutes' and is a crypto portfolio tracker in the bitcoin & cryptocurrency category. There are more than 10 alternatives to Koinly for a variety of platforms, including Web-based, Android, iPhone, Windows and Linux apps. The best Koinly alternative is CryptoJournal.Wpf, which is both free and Open Source. Other great apps like Koinly are KoinX, Rotki, CoinTracking and BitOK.