Konstantin Vinogradov

# Konstantin Vinogradov > VC investor specializing in open source, AI, and infrastructure software. Previously General Partner at Runa Capital ($600M+ AUM). Based in London, often in the SF Bay Area. Notes on venture capital, tech startups, open source, and philanthropy. ## About - [Konstantin Vinogradov](https://kvinogradov.com/): Personal page with background, investments, philanthropy, and writings on venture capital, open source software, and technology startups. - [Writing](https://kvinogradov.com/writing/): A collection of articles exploring open source growth, investment theses, OSS funding, and developer ecosystem analysis. ## Venture Capital and Investments - [Investment in open source AI agent framework Mastra](https://kvinogradov.com/mastra/): Investment thesis on Mastra, the leading open source TypeScript AI agent framework. Discusses the agentic AI market, the distinction between "AI People" (Python) and "Software People" (TypeScript), and why TypeScript-native AI tooling matters. Mastra raised a $13M seed round. - [Investment in open source CRM Twenty](https://kvinogradov.com/twenty/): Investment thesis on Twenty, the leading open source CRM. Covers the history of open source business infrastructure, Salesforce's dominance, and how Twenty is building a modern, data-centric, AI-native CRM platform. Runa led the $5M seed round. - [Investment in open source AIOps platform Keep](https://kvinogradov.com/keep/): Investment thesis on Keep, an open source AIOps and alert management platform. Discusses enterprise alert fatigue, observability stack fragmentation, and how open source can outperform closed-source incumbents in adapting to diverse enterprise environments. Runa led the pre-seed round. Keep was later acquired by Elastic. - Other select investments include [Entire](https://entire.io/) (next-gen developer platform for humans and AI agents), [Dosu](https://dosu.dev/) (AI teammate for engineering teams), [White Circle](https://whitecircle.ai/) (AI guardrails and red-teaming), [Higgsfield](https://higgsfield.ai/) (AI video/image generator, $100M+ ARR), and [Sidekick](https://www.meetsidekick.com/) (work-focused browser, acquired by Perplexity). - [Runa Capital](https://runacap.com/): Global venture capital firm where Konstantin was a General Partner. Portfolio includes n8n, Mambu, Nginx, MariaDB, and Pasqal. ## Open Source Research and Initiatives - [It's time for the Open Source Endowment](https://kvinogradov.com/osendowment/): Thesis and launch of the Open Source Endowment — the world's first endowment fund dedicated to sustainably funding critical open source software maintenance. Covers why 96% of codebases depend on OSS yet 60% of maintainers are unpaid, why current funding models fall short, the university endowment analogy, and how OSE works as a US 501(c)(3) with ~$700K from 60+ founding donors including the founders of HashiCorp, Elastic, ClickHouse, Supabase, NGINX, Vue.js, Pandas, Pydantic, and curl. - [Open Source Endowment website](https://endowment.dev/): The first endowment fund exclusively dedicated to open source software, enabling sustainable long-term funding for OSS maintainers. Community-led nonprofit founded in 2025. - [ROSS Index](https://runacap.com/ross-index/): The Runa Open Source Startup Index, tracking the fastest-growing open source startups quarterly from 2020 to 2025 based on GitHub star growth. - [GitHub repo with OSS startup alternatives to SaaS](https://github.com/RunaCapital/awesome-oss-alternatives): A curated list of open source startup alternatives to traditional SaaS products. - [What Open Source can learn from universities to fix its funding](https://kvinogradov.com/oss-universities/): Original proposal arguing that open source communities resemble research universities in culture and function, and that the endowment model used by top universities can solve the OSS sustainability crisis. - [How I algorithmically donated $5,000+ to OSS via GitHub Sponsors and PyPI data](h […gekürzt]