Social Feed Manager is described as 'is open source software for libraries, archives, cultural heritage institutions and research organizations. It empowers those communities’ researchers, faculty, students, and archivists to define and create collections of data from social media platforms'. There are seven alternatives to Social Feed Manager for a variety of platforms, including Online / Web-based, Self-Hosted solutions, Mac, Windows and Linux. The best alternative is Wayback Machine, which is free. Other great apps like Social Feed Manager are Archive.is (Free), ArchiveBox (Free, Open Source), TechRewind (Free) and FreezePage (Freemium).
Because modern websites are complicated and often rely on dynamic content, ArchiveBox archives the sites in several different formats beyond what public archiving services like Archive.org and Archive.is are capable of saving.
Free online service for freezing web pages. Save, share and prove what is on the web at a specific point of time. You have to register a free account and to log in every month otherwise your frozen pages won't last more than 3 days.