Dirk Riehle's Industry and Research Publications

Please Help Keep our Language Precise: Single-Vendor Open Source is Neo-Proprietary Source, not Closed Source

When the Open Source Initiative defined open source, it focused only on the license, and ignored the process. Smart entrepreneurs quickly discovered that they could provide to the world their product as open source code and benefit from it, while strictly controlling the process to keep competition at bay. This is called single-vendor open source.

Single-vendor open source is not closed source, not even “the new” closed source. The following 2×2 matrix illustrates the distinction between license and process:

Closed source traditionally has been closed both on license and process. Community open source is the proper open source, open both in license and process. If you want to chide single-vendor open source as “not being proper community open source”, calling it closed source will only confuse.

I offer neo-proprietary as a better term. Neo-proprietary captures the dominance and control of a proprietor in both the traditional closed source and the single-vendor open source case without confusing the two.

Related reading

I write a lot on this subject, so you might like the following articles and videos:

More using the single-vendor open source search on this site.


  1. […] ソフトウェア (または、Dirk Riehle 氏の言うネオプロプライエタリ) です。 言った 数年前)。 […]

  2. […] software for what it truly is: proprietary software in hiding (or neo-proprietary, as Dirk Riehle said a few years ago). This post will go into detail on how I came to this […]

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