In addition to the numerous volunteer developers (see CONTRIBUTORS), the following organizations have provided financial or other support for Squid: The National Science Foundation The NSF was the primary funding source for Squid development from 1996-2000. Two grants (#NCR-9616602, #NCR-9521745) received through the Advanced Networking Infrastructure and Research (ANIR) Division were administered by the University of California San Diego. MARA Systems AB - http://www.marasystems.com/ MARA systems has sponsored the bug fixing and maintentnance for most Squid-2.5 releases, and a number of new features to be found in Squid-3. Swell Technology - http://www.swelltech.com/ Swell Technology provides ongoing development and testing support to the Squid project, as well as hardware donations for Squid developers. Picture IQ - http://www.pictureiq.com/ Bought simple support for the Vary header, to help their accelerator setups. SGI - http://www.sgi.com/ SGI has provided hardware donations for Squid developers. craigslist - http://www.craigslist.org/ craigslist has provided funding in recognition of the vital role squid plays in their web serving architecture. webwasher AG - http://www.webwasher.com/ webwasher AG paid for improvements to Squid's iCAP client implementation. You can find the results of this work at http://devel.squid-cache.org/icap/ iiNet Ltd - http://www.iinet.net.au/ iiNet Ltd contributed significant development resources to Squid during its early stages and was instrumental in its early adoption in the local internet community. iiNet has also recently supplied equipment to help develop and test the WCCPv2 implementation in Squid-2.6 and Squid-3. Yahoo! Inc. - http://www.yahoo.com/ Yahoo! Inc. supported the development of improved refresh logics. Many thanks to Yahoo! Inc. for supporting the development of these features.