Portfolio Performance is described as 'Open source program that calculates the performance of an overall portfolio - across multiple accounts and accounts - using true-time weighted rate of return and internal rate of return' and is a personal finance tool in the business & commerce category. There are more than 25 alternatives to Portfolio Performance for a variety of platforms, including Web-based, Mac, Windows, SaaS and Linux apps. The best Portfolio Performance alternative is Wealthfolio, which is both free and Open Source. Other great apps like Portfolio Performance are CryptoJournal.Wpf, Foliofox, Ghostfolio and MyFinanceTools.
The UI/UX is much more user friendly and it's not as technical.