Software Freedom Conservancy says TRUTH Social violates Mastodon's open source code licensing terms by not sharing its source code, gives it 30 days to comply

Truth Social ripped off open-source platform Mastodon — The Software Freedom Conservancy (SFC) says former President Donald Trump's …

The Verge 2021-10-23 Adi Robertson

Context & Ripple Effects

The licensing complaint follows the Mastodon founder's identification of what appeared to be a Mastodon fork from an error-message screenshot. SFC is now turning that indication into a 30-day compliance demand, putting the code behind TRUTH Social's launch under direct scrutiny.

Related coverage also showed TRUTH Social establishing its own user rules, including restrictions on excessive capitalization and account bans. The dispute matters because the platform's operating layer may carry reciprocal obligations to the upstream project it appears to use.

First-order effects

TRUTH Social must respond to SFC's demand by sharing the relevant source code or otherwise addressing the alleged Mastodon license breach within the stated 30 days.
SFC and Mastodon gain a concrete enforcement mechanism over a high-profile deployment that the founder had already publicly linked to a Mastodon fork.

Second-order effects

Other services built from Mastodon code face a clearer signal that public-facing forks can draw scrutiny when their source-sharing obligations are not met.
If TRUTH Social releases the relevant code, developers and users can assess the modifications underpinning the platform rather than relying solely on its published rules.

Third-order effects

Repeated enforcement of reciprocal open-source licenses would make compliance a continuing operating requirement for platforms that customize community software, not merely a launch-time legal check.
The episode points to a broader contest over whether platforms can differentiate through proprietary changes while relying on open-source social infrastructure.

The trend: Open-source social software is becoming a governance and compliance constraint for platforms that build branded services on top of it.

Discussion

The Register Chris Williams on mastodon
Florida man accused of breaking Mastodon's open-source license with botched social network launch
Input Andrew Paul on mastodon
Trump's Truth Social is just an illegal Mastodon clone
@briannawu Brianna Wu on x
Refactor an entire social media network with proprietary code? In 30 days? PIECE OF CAKE! https://www.theverge.com/...
@conservancy @conservancy on x
Our Policy Fellow @bkuhn_ebb_org blogs about #Trump's Group violation of the Affero GPL on @joinmastodon's #Mastodon codebase; Trump's Group has 30 days to comply with the #AGPLv3: https://sfconservancy.org/... #copyleft #GPL
@drewharwell Drew Harwell on x
Update: Trump's social network is breaking the code-sharing rules of Mastodon, the software the entire site is built on, @conservancy says. If they fail to fix within 30 days, “their rights and permissions in the software are permanently terminated” https://sfconservancy.org/...
@maggienyt Maggie Haberman on x
This is weird https://www.vice.com/...
@ilvestoomas Toomas Hendrik Ilves on x
Ripping off open source software is the apotheosis of Trumpism https://www.theverge.com/...
@austin_federa Austin Federa on x
Not to get all political, but don't fuck with open source devs https://sfconservancy.org/... https://twitter.com/...
@genecollier Gene Collier on x
Or what, they'll issue a report? https://twitter.com/...
@hshaban Hamza Shaban on x
The Software Freedom Conservancy says Trump's new social network violated an open-source licensing agreement by ripping off Mastodon. Trump's company has 30 days to comply with the terms of the license before its access is terminated via @thedextriarchy https://www.theverge.com/.…
@chrismessina @chrismessina on x
Yassss. Don't fuck with open source, Trumpistan! You about to get served. https://www.theverge.com/... #GPLv3 #ActivityPub #TruthSocial #TruthIsALie https://twitter.com/...
@reckless Nilay Patel on x
Every part of this is so funny https://www.theverge.com/...
@newsweek @newsweek on x
The founder of Mastodon said it appears Truth Social is “absolutely is based on” his open-source social networking platform. https://www.newsweek.com/...
@eliotwb Eliot Brown on x
update: the market today is valuing Trump's new media company at >$9.5 B. That would make it worth more than the New York Times Co. https://twitter.com/...
@mikaelthalen Mikael Thalen on x
Was just able to setup an account using the handle @donaldtrump on ‘Truth Social,’ former President Donald Trump's new social media website. Although the site is not officially open, a URL was discovered allowing users to sign up anyway. https://twitter.com/...
@angryblacklady @angryblacklady on x
it's got a snowflake clause lmao https://twitter.com/...
@danprimack Dan Primack on x
Trump SPAC is down 40% from its high earlier this morning.
@reallizusa Liz Harrington on x
🚨President Donald J. Trump Announces Trump Media & Technology Group🚨 “I created TRUTH Social and TMTG to stand up to the tyranny of Big Tech... I am excited to send out my first TRUTH on TRUTH Social very soon...” https://twitter.com/...
@drewharwell Drew Harwell on x
4. What else? The app listing used Chevy and NYT logos; both companies told me they were unauthorized. And the head of Mastodon, maker of the social-network code Trump's site relies on, is talking with legal counsel about whether site is breaking its rules https://www.washingtonp…
@danpfeiffer Dan Pfeiffer on x
The utter absurdity of this aside, I still find it very funny that Facebook spent four years breaking their own rules to appease Trump and his response is to launch a Facebook competitor https://twitter.com/...
@jkosseff Jeff Kosseff on x
The Truth Social Oversight Board will be amazing.
@mattyglesias Matthew Yglesias on x
A new Trump media venture will allow users to break free of the death-grip woke leftists like Ben Shapiro and Dan Bongino have on the big tech platforms. https://twitter.com/...
@drewharwell Drew Harwell on x
Other TRUTH Social weird stuff: * Its App Store listing has lots of official logos & fake posts from companies like Chevy, which tells me they have “no affiliation” with the site * It can ban you for posting too many capital letters. Damn cancel culture https://www.washingtonpost…
@yunli626 Yun Li on x
$DWAC, the SPAC to merge with Trump's social media platform, skyrocketed on extremely heavy trading volume Thursday. -closed up 356.8% at $35.54 per share -more than 475 million shares changed hands -trading was halted multiple times due to volatility https://www.cnbc.com/...
@aricohn Ari Cohn on x
Huh, it sure seems like the Section 230 truthers really don't like putting their money where their mouth is. https://twitter.com/...
@dpakman David Pakman on x
Wait, so Trump's heroic new free speech platform, meant to defeat censorship and limits on speech, will ban you if you say something mean about the website? https://twitter.com/...
@jonchevreau Jonathan Chevreau on x
Pranksters have already defaced Trump's new social network (and talk about Hutzpah when a pathological liar incorporates the word Truth in his service. Both Truth and Trump begin with the letters TRU, but there the similarity ends.) https://www.washingtonpost.com/ ...
@ian_fraser Ian Fraser on x
The unholy mess inside Donald Trump's social-media network, #TruthSocial. It's already been hijacked by pranksters, it bans criticism of itself, and it adopts the very policies that Trump has slammed “Big Tech” for. https://www.washingtonpost.com/ ...

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