Filen

Filen pairs zero-knowledge, client-side encryption with some of the lowest per-terabyte prices on this list: Pro III gives 2 TiB for 8.99 euros a month. Its headquarters and servers are in Germany, which matters to anyone who wants their files under EU rules. Plans stack on a single account, so two 10 TiB plans make 20 TiB with no upper limit, a tidy way to grow an archive without migrating. It is a younger, smaller company than the household names, so keep a separate backup of anything that lives only here.