Based on our record, SpiderOak seems to be more popular. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
SpiderOak and BoxCryptor, both exist for this very reason. Source: about 2 years ago
You sounds like you need to use another service, https://spideroak.com/. Source: almost 3 years ago
Dropbox - Online Sync and File Sharing
docNCRYPT - docNCRYPT is a cybersecurity platform which only focuses on its core services in protecting your email directly from the different email service provider and allows you to integrate your business email portal in the online service.
Mega - Secure File Storage and collaboration
LuxSci - LuxSci providing HIPAA-compliant email, secure email & web services.
Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.
encryptomatic - encryptomatic is a smart email encryption software which provides tons of tools in encryption protocols for secure communication and business transaction.