Does Linphone (https://linphone.org/ https://linphone.org/) not meet that need of cross platform (website claims versions for all major OS'es) and open source (

Does Linphone (https://linphone.org/ https://linphone.org/) not meet that need of cross platform (website claims versions for all major OS'es) and open source (https://gitlab.linphone.org/BC/public/linphone-desktop https://gitlab.linphone.org/BC/public/linphone-desktop)?