Tresorit

Not a permanent one. Tresorit is primarily a paid, premium security service; it offers a free trial so you can test it, but its ongoing free storage tier has been discontinued, so there's no lasting free plan. Paid personal plans start at US$11.99/mo. If you specifically want permanent free storage, MEGA (20 GB) or Sync.com (5 GB) are better suited. Tresorit's focus is top-tier, business-grade security for paying users rather than a free offering.

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Tresorit was founded in 2011, with roots in Hungary and Switzerland, and has been majority-owned by Swiss Post since 2021. That ownership reinforces its Swiss-jurisdiction, privacy-first positioning and gives it the backing of a stable national institution.

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Yes. Tresorit is a legitimate, highly regarded Swiss security company used by businesses and professionals worldwide to store confidential files. It relies on end-to-end, zero-knowledge encryption and its security architecture has been independently reviewed, making it one of the most trusted names in encrypted cloud storage.

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Dropbox is a mainstream sync service with excellent collaboration, fast block-level sync and a huge range of integrations, but it isn't end-to-end encrypted — Dropbox can technically access your files. Tresorit is end-to-end, zero-knowledge encrypted and Swiss-based, purpose-built for confidential and regulated data, so only you and those you authorise can read it. The flip side is that Tresorit costs more and has fewer third-party integrations. Choose Tresorit for security and compliance; choose Dropbox for ecosystem, collaboration and price.

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Tresorit is used to store, sync and share confidential files securely — particularly by businesses, law firms, healthcare providers and anyone handling sensitive or regulated data. Its end-to-end, zero-knowledge encryption and Swiss privacy jurisdiction mean that only you and the people you authorise can read the files, which is why it's popular where confidentiality and compliance are non-negotiable rather than as a casual consumer drive.

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