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diff --git a/2003/opensource-astaro2003/brainstorming b/2003/opensource-astaro2003/brainstorming new file mode 100644 index 0000000..f501973 --- /dev/null +++ b/2003/opensource-astaro2003/brainstorming @@ -0,0 +1,105 @@ +What is open source? How does it work? +Who writes code for nothing and why? + +- traditional software model + - product-oriented + - company finances development of software + - same copy of software object code is sold under a very restrictive + license + - license fees refinance cost of development + - enforcement of restrictive license guarantees revenue + - advantages + - proven business model + - disadvantage + - have to develop everything on your own or buy licenses of 3rd + party software + - less flexibility for the customer + - does the customer trust the 'black box' you are selling? + - if vendor goes out of business, no bugfixes/updates + +- open source model + - service based + - individual parties contribute code parts + - software is distributed for free + - software is distributed under very permissive license + - service / support / customization refinance development + - advantages + - vast amount of available FOSS can be used as foundation for + own products + - source code is available for peer review + - bug fixes for free, people just send you patches + - new features impelemented by your users! + - disadvantage + - business model has yet to be proven to work + +- important open source license + - BSD style license + - permits any use of the sourcecode as long as copyright notice + remains + - GPL (GNU General Public License) + - source for resulting binary has to be provided + - ensures that derivates of free software are still free + - LGPL (GNU Lesser General Public License) + - permits linking with non-gpl code (mainly used for libraries) + +- difference free software / open source + - term 'free software' (free as in freedom, not beer) introduced by + Stallman / FSF 1984. + - focus on political/ethical/philosophical freedom + - open source software (OSS) introduced by OSI in 1997 + - focus on technological advantage by means of source review + - most FOSS licenses match both definitions, OSS less restrictive + +- history of FOSS + - initially software always for free in source (e.g. IBM S/360) + - as hardware gets less expensive, companies start to license + software for money + - some people (Stallman, et. al.) didn't want to give up the freedom + they're used to. + - 1983: GNU project is founded, goal: Implementation of a free UNIX-like + operating system + - 1984: Free Software Foundation is established as non-for-profit legal + entity behind the GNU project + - 1991: Linus Torvalds releases the first version of the Linux Kernel + under the GNU GPL license. Together with the other parts from the + GNU project and others, a 100% free operating system is available + - 1994-2000: Free Software is increasingly recognized as reliable, + stable alternative to proprietary software + +- Who is behind FOSS? + - in the beginning mostly computer enthusiasts with academic background + - motivation through + - fight: david <-> goliath + - to show how bad most proprietary software is + - to make the internet a better place + - to work together with _very_ good programmers + - to gain more experience / better reputation + - more and more commercial entities recognize the value of FOSS + - contributions to existing projects + - start of new projects + - contracting consultants and FOSS companies for implementation + of missing features + - experienced end-users + - independent consultants + - academic institutions (e.g. exim, cyrus) + - mixed FOSS / proprietary companies (like Astaro) + - use FOSS as foundation for their proprietary solutions + - have a vital need for a reliable and up-to-date foundation, + thus contribute back to and/or fund FOSS + +- development process, communication + - everybody who agrees to the license can contribute code + - project is usually started by a single developer or a small group + - different actors: + - maintainer: official person to maintain the code, responsible + - core team: small group of leaders behind the project + - developers: people who write code on a regular basis + - contibutors: people who contribute a single feature or a bug + fix from time to time + - users: people who use the software, often organized on + mailinglists, newsgroups, user groups, .. + - main communication medium are mailinglists + - every developer can be contacted directly via email + - leaders/managers are people with the best technical skills, unlike the 'commercial world' where you need certain diploma, connections, ... + - communication is random. no manager <-> manager talk about technical + stuff they don't understand |