Clerk is a developer-focused authentication and user-management platform that provides embeddable UIs, flexible APIs, and admin dashboards for building sign-in and user identity into applications. Clerk's Twitter Score is 20 out of 1000 as of September 2026, ranking #49,312 among 486,573 tracked accounts.
Clerk was co-founded by Colin Sidoti, who serves as Cofounder and CEO, and Braden Sidoti as Cofounder. The platform supports Web3 authentication across a range of wallets, including Base, MetaMask, Coinbase Wallet, OKX Wallet, and Solana wallets, making it relevant to both traditional and crypto-native developer workflows. As of October 2025, Clerk managed over 200 million users across more than 15,000 applications.
Clerk has raised successive funding rounds, growing from a $4M seed in July 2021 through a $6.2M round led by Andreessen Horowitz in November 2022, a $15M Series A in March 2023, a $30M Series B in January 2024, and a $50M Series C in October 2025. Additional backers include S28 Capital, Fathom Capital, South Park Commons, Madrona, Mango Capital, CRV, Stripe, Menlo Ventures, Anthropic's Anthology Fund, and Georgian. Clerk has been active on Twitter since 2019 and has published 1,981 posts to date.
Clerk has been mentioned by 64 accounts, with 116 total mentions across the platform.
Who follows Clerk on X?
The accounts that follow Clerk include 108 founders, 28 angel investors, 22 influencers and 3 VCs. Among the notable followers are Luca Netz, mikedemarais.eth, Emilie Choi, Alex Atallah, Ryan Carson and Tiffany Fong.