Tech Startups in St. Louis

About startups in St. Louis

St. Louis is home to 3 tech startups indexed on techstartupslist.com. This page lists every active St. Louis company we track, with logos, taglines, and direct links to each company's site — no paywalled middleman. Notable St. Louis startups in the index include Cofactor Genomics, Customily, and Well Principled. Each profile surfaces team size, founding year, category, and any open roles their careers page is publicly scrapable for. The St. Louis cohort leans toward Healthcare, Dev Tools, and AI / ML, reflecting how the local startup ecosystem is concentrated. Recurring tags across these companies: Medical Devices, Biotech, Diagnostics, SaaS, B2B. The directory's filter UI accepts any of them as a query. Y Combinator batches represented in St. Louis: S15, S21, and S19. Jump to the per-batch landing pages for batch-specific cohort views. the listing refreshes whenever the scrape runs so this stays current as St. Louis companies launch, raise, and ship. For roles open at these companies, see /jobs/location/st-louis — every apply link goes to the company's own site, not an aggregator.