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History: Constructive Cost Model COCOMO

Preview of version: 11

As of 2019, WikiSuite is "worth" between 50 and 100 million $USD.

Really?

Yes. If you tried to re-code WikiSuite using proprietary models. Ref: https://en.wikipedia.org/wiki/COCOMO

How can it be free and who paid for this?

Like Wikipedia, GNU/Linux and Firefox, WikiSuite is the result of massive collaboration.

How do you arrive to 50 million $USD? Are you including the cost of GNU/Linux?

Nope. Just the Linux Kernel would cost billions to redevelop

The WikiSuite-specific code (mostly ClearOS installers):
0.2 M: https://www.openhub.net/p/wikisuite/estimated_cost
This is intentionally as small as possible since we focus on upstreaming code to the various Software Components

The main software components:

Tiki Wiki CMS Groupware

Openfire

ClearOS

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