YC S23 Startups
Every Y Combinator Summer 2023 company we currently index — part of the latest YC companies rollup.
About YC S23
The Y Combinator S23 batch (Summer 2023) brought 203 tech startups into our index. This page lists every S23 company we currently track, with logos, taglines, and links straight to their own sites — no paywalled middleman. Notable S23 companies include Hyperbound, Accend, Affinity, AgentCollect, and Agentive. Each profile surfaces team size, founding year, location, and open roles when their careers page is publicly scrapable. The S23 cohort skews toward AI / ML, Dev Tools, and Healthcare — common patterns we see in this batch. Recurring tags across these companies: Artificial Intelligence, AI, B2B, SaaS, Developer Tools. The directory's filter UI accepts any of them as a query. Geographically, the S23 batch we have leans toward San Francisco, New York City, and London, with the rest spread across remote-first teams and other hubs. 1 of these is currently flagged as trending based on momentum signals; and the listing refreshes whenever the scrape runs, so changes propagate without a manual edit.
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Similar startups outside YC S23
2 of 4 similar companies are hiring right now · most common: Engineering
Other YC batches
Frequently asked questions
What is the YC S23 batch?
S23 is the Y Combinator batch code for the Summer 2023 cohort. Companies joining a YC batch go through a 3-month program in California and demo their product at the end. techstartupslist.com indexes 203 tech startups from this batch.
How many companies are in YC S23?
Our index currently tracks 203 active tech startups from the YC S23 batch. New companies appear here automatically when our daily scraper finds them; companies that shut down are flagged inactive and hidden from listings.
Which companies graduated from YC S23?
Among the S23 companies indexed here: Hyperbound, Accend, and Affinity, and 200 more on this page. Click any profile for category, team size, founding year, and open roles.
Where can I find open jobs at YC S23 startups?
Open roles from indexed S23 companies appear on our /jobs page, aggregated alongside roles from other indexed startups. Each role links directly to the company's official application page.
How often is the YC S23 page updated?
Automated scrapers refresh this page daily. The last index update was 2026-09-02. Inactive companies fall out of the count automatically — we don't keep dead listings live.