A profile of Tapbots co-founders Paul Haddad and Mark Jardine; former Twitter executive Amir Shevat says third-party apps once accounted for ~17% of engagement
After Elon Musk killed their Twitter app, two software developers in the North Texas suburbs are trying to shape the future of social media.
Context & Ripple Effects
Paul Haddad and Mark Jardine spent over a decade building Tapbots' Tweetbot, one of the most popular ways to use Twitter outside the official app — until Elon Musk shut it down. The kill shot came in January, when Twitter quietly added a clause banning third-party clients to its developer agreement, after months in which the platform had already been unwinding its commitments to developers: as the former product head of Twitter's developer platform detailed, plans like custom timelines were abandoned post-acquisition, eroding the trust that kept builders like Tapbots on the platform.
First-order effects
- Tapbots loses the product that anchored its business overnight, forcing Haddad and Jardine to pivot from maintaining a Twitter client to building something new in the North Texas suburbs.
- Developers still hosting tools on Twitter's API face the same exposure: a single contract clause can end years of work, with no grandfathering for apps users depend on.
Second-order effects
- The exodus of trusted third-party builders feeds rival platforms: T2, co-founded by a former Google Area 120 director, is explicitly courting developers and users who want the "2007 Twitter" vibe Musk's platform no longer offers.
- Meta read the same opening — insiders describe staff secretly building a Twitter-like service around the "OG Mark" push, positioning Instagram's company to absorb refugees that Twitter's own ecosystem is pushing out (per WSJ reporting).
Third-order effects
- Amir Shevat's estimate that third-party apps once drove ~17% of Twitter engagement suggests the ban didn't just cut off developers — it removed a meaningful slice of usage, a structural self-inflicted wound competitors can build against.
- If platforms keep treating access layers as expendable, independent client developers will consolidate around open protocols or big-company ecosystems, ending the era when small shops like Tapbots could build durable businesses on another company's firehose.
The trend: Platform owners are reabsorbing the access layer — killing third-party clients and pushing their displaced builders toward upstart rivals and closed ecosystems.