Sean O'Sullivan (@sean_os1) — Twitter Score 8 out of 1000
Fair
8Ranked #109,886 of 498,348 crypto accounts tracked by TwitterScore.io
Matthew Graham
TO
JB
Josh Kopelman
USV
Dave McClure
Upgrade to see this data
Upgrade to see this data
Upgrade to see this data
Smart Followers
Unlock instant search across all smart followers, plus categories, trending alpha and bulk score checks.
Unlock instant search across all smart followers, plus categories, trending alpha and bulk score checks.
| Username | Following Date | Twitter Score | Followers | Smart Followers | Description |
|---|---|---|---|---|---|
|
|
|||||
About Sean O'Sullivan's Twitter Score
Sean O'Sullivan is a technology entrepreneur, inventor and venture-capital investor who founded SOSV, a multi-program accelerator and venture fund, after co-founding MapInfo, the digital street-mapping company whose IPO preceded SOSV's launch. Sean O'Sullivan's Twitter Score is 8.4 out of 1000 as of October 2026, ranking #109,886 among 498,348 tracked accounts.
Sean O'Sullivan co-founded MapInfo and later co-founded NetCentric, where he and George Favaloro are credited with co-creating the term "cloud computing" in 1996. He also co-founded HAX, a hardware-focused accelerator, and founded Carma Technology, and is affiliated with IndieBio, the life-sciences accelerator operating under the SOSV umbrella. He was previously affiliated with Orbit Startups.
Sean O'Sullivan has been an active voice on the potential of blockchain and decentralized applications. SOSV ran dlab, an early-stage Web3 infrastructure program, before it spun out as a standalone fund effective January 1, 2023, with SOSV becoming its anchor limited partner. The standalone fund was founded by Shawn Broderick and Nick Plante. Sean O'Sullivan was formerly affiliated with dlab prior to its spinout.
Sean O'Sullivan posts across 7,136 entries on the platform and has been mentioned by 17 accounts a total of 242 times, reflecting sustained engagement from the broader crypto and venture community.
Who follows Sean O'Sullivan on X?
The accounts that follow Sean O'Sullivan include 62 founders, 17 angel investors, 6 influencers and 10 VCs. Among them are Matthew Graham, TO, JB, Josh Kopelman, USV and Dave McClure.
