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SpiderOak 3.5 under Mac OS X
Developer(s) SpiderOak
Initial release December 2007
Stable release 6.0.1 / August 19, 2015; 3 years ago (2015-08-19)
Development status Active
Written in Python/Qt
Operating system Windows, OS X, Debian, Fedora, Slackware, Android, iOS
Available in English
Type Online backup service
License Proprietary (GPLv3 for some tools)
Website spideroak.com

SpiderOak is an US based[1] online backup and file hosting service that allows users to access, synchronize and share[2] data using a cloud-based server. SpiderOak is accessible through an app for Windows, Mac and Linux computer platforms, and Android, N900 Maemo and iOS mobile platforms.[3] According to SpiderOak, the software uses encrypted cloud storage and client-side encryption key creation, so SpiderOak employees cannot access users' information. Some components of SpiderOak are open-source, and as early as 2009 the company announced their intent for the client to be fully open-source in the future.[4] As of 2015, SpiderOak's source code is not available.[5]

SpiderOak distinguishes itself from its competition in provision of encryption,[6] in provision for syncing files and folders across multiple devices, and in automatic de-duplication of data.[7]

SpiderOak was rated "Awesome" by MacLife magazine in 2009[8] and also was made an Editor's Choice by Computer Shopper magazine in May 2009.[9] In a July 2014 interview, former NSA contractor Edward Snowden recommended SpiderOak over Dropbox, citing its better protection against government surveillance.[10]


SpiderOak was founded in 2007 by Ethan Oberman and Alan Fairless as a zero knowledge private backup program.[11] In 2013, SpiderOak began developing Crypton (framework), "a JavaScript framework for building applications where the server doesn't know the contents it's storing on behalf of users."[12] Crypton is an Open Source project allowing developers to easily add encryption security to mobile applications.[13] By mid-2014, SpiderOak neared 1 million users.

SpiderOak is headquartered in Chicago and currently employs 42 staff, headed by CEO Ethan Oberman.[10] In 2013, SpiderOak opened offices in San Francisco and Kansas City, and hires remote employees inside and outside of the US.[14][15]

Main features

Main features comprise:

  • All data accessible in one de-duplicated location
  • Configurable multi-platform synchronization
  • Preserve all historical versions and deleted files
  • Share folders in web ShareRooms with RSS notifications[3]
  • Retrieve files from any internet-connected device
  • Claimed "zero-knowledge" data encryption if you only use the desktop client, that is, no sharing, web-access, or mobile access.[16] This claim, however, cannot be confirmed due to the client being closed source[17]
  • Unlimited devices[18]
  • A layered approach to encryption, using a combination of 2048-bit RSA and 256-bit AES[4]

See also


  1. "SpiderOak Service Agreement". SpiderOak. Retrieved 2013-06-09. 
  2. SpiderOak. "Spideroak Service Description". SpiderOak. Retrieved 2009-06-19. 
  3. 3.0 3.1 "SpiderOak Review: Cloud Storage reviews at". Nextadvisor.com. Retrieved 2013-08-10. 
  4. 4.0 4.1 "Spideroak: Engineering Matters". SpiderOak. Retrieved 2009-11-04. 
  5. "Why isn't SpiderOak open source yet? When will it be?". Archived from the original on 2015-04-23. 
  6. "SpiderOak: Dropbox for the security obsessive". The chief difference between SpiderOak and its competitors for the security and privacy-conscious is in how the services treat user data. 
  7. Carla Schroder (2009-01-22). "Spideroak: Secure Offsite Backups for Linux". LinuxPlanet. Retrieved 2009-02-26. 
  8. Susie Ochs (2009-06-11). "Online Storage Battle: Which Cloud Back-Up Service Reigns Supreme?". MacLife. Retrieved 2009-11-04. 
  9. Haley, Fiona (2009-05-05). "SpiderOak 3.0 Review". Computer Shopper. 
  10. 10.0 10.1 Yadron, Danny; MacMillan, Douglas (2014-07-14). "Snowden Says Drop Dropbox, Use SpiderOak". WSJ.com Digits. The Wall Street Journal. Retrieved 1 September 2014. 
  11. "About SpiderOak". 
  12. "About Crypton". 
  13. Klint Finley (March 1, 2013). "Open Source Project Prepackages Kim Dotcom’s Security". Wired. 
  14. "SpiderOak Grows Enterprise Revenue 300%, Doubles Headcount". SpiderOak. December 10, 2013. 
  15. "Chris Cooley shares how SpiderOak’s distributed team works". Silicon Prairie News. August 29, 2014. 
  16. "How do I use the SpiderOak Web API?". SpiderOak FAQs. Retrieved 21 August 2014. 
  17. "SpiderOak to Become OSS & More: What to Expect From Us in 2014 (PART I)". The Spideroak Blog. Retrieved 21 August 2014. 
  18. "Spideroak: Free Online Backup, File and Folder Sync, Share & Storage for Windows, Mac, and Linux – SpiderOak.com". SpiderOak. Retrieved 2009-11-04. 

External links