There are new platforms emerging all the time, so this list is selective and far from exhaustive, according to the platforms that might be most suitable for Atla members. For more comprehensive lists of platforms, see Free and open-source repository software. For a list of Open Access Repositories, see OpenDOAR.
It is important to remember that NO repository platform is free. The total cost of ownership for a platform will include licensing, implementation costs, computer and storage costs, staff time, and much more. Even if you elect to go with a platform that does not have software licensing fees, you could end up with a more expensive solution in the long run.
These will be annotated with highlights and basic advantages for each.
Digital Commons (Elsevier/BePress)
Choosing an IR platform can be a challenging task. Knowing what options are available and what each option affords can help your team choose the best fit platform for your particular situation. Here are some basic overviews of platform comparisons. See below for more details on some of the most popular IR options for Atla libraries.
UNESCO Institutional Repository Comparison (2014)
This comparison is a bit dated now, but it includes many of the main platforms still in use today. This comparison provides 12 useful categories of features and functionalities you might want to consider when evaluating any platform.
VCU: Choosing a Repository Platform (2016)
This description of platform selection and migration through a few concrete examples provides excellent information about the strengths and weaknesses of different types of platforms and how choice of platform impacts the adoption and sustainability of the repository.
Something more recent...