November 5, 2026
A directory page for the list published by Gap (@gaspardlezin).
Gap (@gaspardlezin) published “50 fintech founders worth following on X” and split the names the way operators talk about the stack: stablecoins and rails, neobanks, payments, infrastructure, spend, and agentic payments. Arrfounder is covering the list so each person has a stable profile next to the directory we already keep.
Open a name to see that founder on Arrfounder. A profile collects the public record we have: the X account, products tied to it, and ARR/MRR news when a public post qualifies. This page does not add revenue figures. Many of these operators run large companies and do not post recurring revenue. If a number appears on a profile, it is there because the founder shared it.
Company names sit next to each person. The company links to its site when there is a clear homepage. The handle links to X. Order inside each category follows the original list. It is a reading list, not a ranking.
Issuers, exchanges, chains, banks, and protocols for minting, holding, and moving digital dollars. This is the largest group on the list.
Stablecoin
App-first accounts: cards, balances, and the software wrapped around a business or consumer bank account.
Checkout, payouts, and cross-border money movement, from Stripe and Block to smaller payments products.
Banking, custody, identity, fraud, and treasury layers other fintech products sit on, plus Base.
Sugar
Corporate cards and business accounts used to spend company money: Ramp, Brex, and Mercury.
Payments built so software, including agents, can pay without a person standing at a checkout form.
Arrfounder is a directory of founders who share revenue signals in public, usually on X. Covering this list gives each name a profile URL under the founder directory and connects it to products and milestone news when we have a public source.
We are not claiming that everyone here discloses ARR or MRR. Use the profiles to see what is actually on file, and use the X links if you want the feed Gap was pointing at. For a searchable view of the wider directory, start at the founder database.
Gap (@gaspardlezin) published “50 fintech founders worth following on X” and grouped the names into stablecoins and rails, neobanks, payments, infra, spend, and agentic payments. This page keeps that grouping and links each person to an Arrfounder profile.
No. Arrfounder does not estimate revenue. A founder profile shows ARR or MRR only when that founder has shared it publicly, and many people on this list do not post those figures.
The X account we track, products tied to that founder, and milestone news when a public post qualifies. A thin profile means we do not have those public signals yet.
Share a revenue signal publicly on X, or submit a profile from the how-to-join page. Listings are reviewed before they appear in the directory.
Browse founders already on Arrfounder, submit a profile if you share revenue publicly, or follow @arrfounder for new profiles and milestone news.