Simon Willison’s Weblog

Items tagged opensource, google

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Why Facebook open-sourced its datacenters. Jon Stokes speculates that Facebook plan to use open source hardware to compete with Google at datacenter efficiency . This isn’t a new pattern. Years ago when I worked at Yahoo! I was furiously jealous of the secret sauce technologies that allowed Google to build big applications faster than anyone else, such as BigTable and map/reduce. Today, the open source world has created better, free alternatives—sponsored in part by Facebook, Yahoo! and other Google competitors. # 9th April 2011, 7:54 am

RE2: a principled approach to regular expression matching. Google have open sourced RE2, the C++ regular expression library they developed for Google Code Search, Sawzall, Bigtable and other internal projects. Unlike PCRE it avoids the potential for exponential run time and unbounded stack usage and guarantees that searches complete in linear time, mainly by dropping support for back references. # 12th March 2010, 9:28 am

EtherPad is Back Online Until Open Sourced. Fantastic news. EtherPad just got acquired by Google and announced the team would be joining the Google Wave effort and the existing service would be shut down. Lots of people complained, so they’re going to keep it alive until they’ve open sourced the code! # 6th December 2009, 9:08 am

Let’s try to imagine what a Google Silverlight would have been. It would have been a fully open source product from Google, with a very liberal open source license (BSD or Apache). It would have all the technical specifications published openly. They would pledge to have the Silverlight VM interoperate with Javascript and HTML5. And a company like Zoho would have a ton of developers working on Google Silverlight based applications by now—as opposed to having exactly ZERO developers working on Microsoft Silverlight.

Sridhar Vembu # 7th June 2009, 11:32 am

Reducing XSS by way of Automatic Context-Aware Escaping in Template Systems (via) The Google Online Security Blog reminds us that simply HTML-escaping everything isn’t enough—the type of escaping needed depends on the current markup context, for example variables inside JavaScript blocks should be escaped differently. Google’s open source Ctemplate library uses an HTML parser to keep track of the current context and apply the correct escaping function automatically. # 14th April 2009, 9:26 am

google-mobwrite. Neal Fraser’s terrifyingly clever differential synchronization algorithm (for SubEthaEdit-style collaboration over the web) is now available as an open source Python and JavaScript library. # 24th January 2009, 11:55 pm

OurDelta Builds for MySQL (via) A community supported “alternative distro” of MySQL, incorporating new features from Google and other sources by maintaining a clean set of patches against the MySQL source tree (which I guess is why it’s not considered a fork). I recognise some of the patches from the excellent “High Performance MySQL, 2nd Edition”. # 8th December 2008, 4:20 pm

Chromium. Google Chrome is out! Here’s the open source project, including the code for the new V8 JavaScript virtual machine. # 2nd September 2008, 9:06 pm

Protocol Buffers: Google’s Data Interchange Format. Open sourced today. Highly efficient binary protocol for storing and transmitting structured data between C++, Java and Python. Uses a .proto file describing the data structure which is compiled to classes in those languages for serializing and deserializing. 3-10 times smaller and 20-100 times faster than XML. # 8th July 2008, 8:20 am

The companies that couldn’t beat Microsoft have all died, and evolution has resulted in three very different types of companies that are each immune to Microsoft’s strategies in their own way. Yet all are still vulnerable to the same thing: a better product. For the end users, this is a good position for the industry to be in.

Ian Hickson # 6th December 2007, 3:43 pm

google-diff-match-patch (via) Robust algorithms to perform the operations required for synchronizing plain text, in Java, JavaScript and Python. # 9th June 2007, 6:15 pm

Semi-synchronous replication for MySQL (via) Google’s patch for MySQL which enables more reliable master-slave replication (a transaction isn’t committed until at least one slave has replicated the data). # 5th June 2007, 10:07 pm

New Open Source Utility Library for the Google Maps API (via) Google are taking a hybrid approach to development on their Maps API—an open source utility library layered on top of their closed source, obfuscated core code. # 23rd March 2007, 9:09 pm

GWT 1.3 Release Candidate is 100% Open Source. At least you can see how the code generator works now. # 12th December 2006, 5:50 pm