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As it’s a requirement that all open source projects are released under at least one open source license, they hold a great deal of influence in how said open source code is used and re-distributed by others. Whilst some licenses can be difficult to make head or tail of due to complicated non-developer language, there are some more relaxed licenses that take the opportunity to have some fun with their requirements. So, to save you doing it, we have assembled our top 5 all time quirky open source licenses to look out for:
- The Beerware License
Written by Danish software developer Poul-Henning Kamp, this license states that if the user thinks the stuff they reuse is worth it they must buy the creator a beer in return. The license’s original notation can be found here. Kamp states his reasoning for the Beerware license is an act of defiance against ‘lawyers trying to interpret freedom’, believing that free open source code should remain free regardless of how much profit is made through its use. Since the requirement is optional, based on the contingency that the user believes the code is ‘worth it’, this license falls under the category of ‘CopyRight only’ licenses. If the requirement were mandatory, the license would be classed as ‘non-free’, and Kamp would most likely be drunk a lot of the time.
- The Chicken Dance License
Otherwise known as the CDL, this license requires employees affiliated with organisations using the open source code to perform ‘The Chicken Dance’ for varying amounts of time, depending on how many units are distributed. The license was created by Andrew Harris with the goal of making “intellectual property far more entertaining to deal with”. Similarly to Kamp, Harries includes himself in wanting fewer lawyers in software – suggesting that the motive behind this wacky license holds strong roots in open source principles of open collaboration. The ‘Chicken Dance’ in question can be found here, but if you can’t master it don’t worry- the license states that moving in a chicken like manor is sufficient.
- The Don’t Ask Me About It License
Perhaps the most simple of the licenses included in the blog, this license simply requests that users do not pester the creator with any issues they may be having with the file. The nod to lack of responsibility is admirable, there is something to be said for wanting to lead a quiet life post software development.
- The Hot Potato License
This license states that ‘all rights are reserved by the last person to commit a change to this repository’. Thus, the rights are passed on from person to person infinitely- like a game of hot potato. However, to avoid anyone interrupting this game of hot potato, users are prohibited from making drastic changes to the repository that would do so. It’s a nice touch from the creator to give us all the opportunity to control the rights of such a well known open source license at least once in our life
- The Do What The F*** You Want License
The Do What The F*** You Want License is a ‘very permissive’ license that can be taken as a direct stand against the principle of licencing software in general. Whilst playing by the rules of licencing, this license intends to be a free pass for distribution without any constraints. However, in the attempt of being so liberal, this license actually poses an issue for some major corporations. For example, Google finds the license too unclear to use confidently. As a result, they have banned the use of components under this license completely. However, if you like the look of this license don’t let Google scare you off, wtfpl.net offers guidance on how to make the most of it.
Whilst there is a funny side to open source licensing, failure to stay on top of your business’s license compliance management could be detrimental. A strong defence of these risks, as well as efficient software composition analysis tools will help manage the use of open source in your code base and avoid hefty fines and diminished customer relations. In this way, legal due diligence is an important step in agile development as it allows to ‘push forward’ and remediate any legal obstacles blocking a decision from being made. To read more about cyber due diligence, check out our past blog.