Mozilla Skywriter

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Mozilla Skywriter
Mozilla Skywriter Logo
Developer(s)Mozilla Labs
Preview release
Operating systemWindows, Mac OS X, Linux
TypeCode editor

Mozilla Skywriter (formerly Bespin[2]) was a Mozilla Labs project aiming to create an open, extensible, and interoperable web-based framework for code editing.

As of January 2011, it has been merged into's Ace and Cloud9 IDE projects.[3]


The original name was a reference to Bespin, the fictional gas giant from Star Wars where "Cloud City" is located,[4] which relates to the cloud computing nature of the project.

In a time preceding the 1.0 release the name of the project was changed to Skywriter due to "many compliments and complaints" over the previous one. This new name also holds a reference to coding in a cloud environment.[2]


Skywriter encourages a more shared environment where data can be accessed from any machine.[5] This allows developers to collaborate on projects through a unified interface accessed through a web browser, no matter where they are physically located.[6] The application is available to anyone after free registration on the website.[7]

Skywriter currently supports syntax highlighting for HTML, CSS, PHP, Python, C#, C, Ruby, JavaScript and Wiring (used by the Arduino platform).[8]


  1. ^ Dean, Sam (2009-02-13). "Mozilla's Bespin Delivers Open, Collaborative Cloud App Development". Ostatic. Retrieved 2009-02-14.
  2. ^ a b Dangoor, Kevin (2010-09-02). "Bespin is now Mozilla Skywriter, moves to GitHub". Mozilla Labs. Retrieved 2010-09-03.
  3. ^ Dangoor, Kevin (2011-01-18). "Mozilla Skywriter has been merged into Ace". Mozilla Labs. Retrieved 2011-02-15.
  4. ^ Broersma, Matthew (2009-02-17). "Mozilla shifts code development to the cloud". ZDNet UK. Retrieved 2009-02-17.
  5. ^ Shanklin, Stephen (2009-02-13). "Mozilla Bespin tries taking coding to the cloud". Cnet news. Retrieved 2009-02-14.
  6. ^ Pash, Adam (2009-02-13). "Mozilla Bespin Is a Killer Web-Based Text Editor". LifeHacker. Retrieved 2009-02-14.
  7. ^ "Mozilla Bespin". Archived from the original on 2009-02-13. Retrieved 2009-02-14.
  8. ^ "Bespin Syntax Files". Mozilla Labs. Retrieved 2010-01-16.

External links[edit]