Developer Tools
Growth Stage
Season 2 · EP 16

How Sentry's David Cramer Turned an Open Source Side Project into a $3B Business

David Cramer, co-founder and CPO of Sentry, joins host Dan Levine to share the unconventional journey of turning an Open Source side project into a $100 million ARR business now valued at over $3 billion.

HostDaniel Levine
David Cramer

David Cramer, co-founder and CPO of Sentry, joins host Dan Levine to share the unconventional journey of turning an Open Source side project into a $100 million ARR business now valued at over $3 billion.

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From his early days as a teenage gamer to becoming a key player in the Django community, David recounts how a simple error-logging tool evolved into an essential platform used by over 100,000 organizations worldwide.

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In this conversation, David also discusses the Open Source Pledge. Recognizing the critical need to support Open Source maintainers, this timely initiative from Sentry and others aims to create a sustainable funding model for Open Source, encouraging companies to support the often invisible labor powering modern software development.

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  • 2:04 His path from Midwest fast food worker to self-taught programmer
  • 07:09: The origins of Sentry as "djanjo-db-log" and its evolution through various tech companies
  • 10:41: Why design was a priority for an Open Source project, even 15 years ago
  • 11:34: The decision to bootstrap and accidentally start a business through Heroku add-ons
  • 12:34: Balancing a day job at Dropbox with the growing demands of Sentry
  • 15:18: The competitive drive that led to raising venture capital and expanding beyond Django
  • 16:27: Sentry's mission to be used by every developer and its unique approach to building a business
  • 17:34: How maintaining an Open Source ethos drove Sentry's growth
  • 21:14 Spearheading the Open Source Pledge to address fair compensation for maintainers

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Whether you're an aspiring founder, Open Source contributor, or just curious about the intersection of community-driven software and commercial success, this conversation offers valuable insights into building a developer-focused company with a foundation in Open Source.

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Featured: David Cramer, CPO and Co-founder of Sentry; Dan Levine, Host

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‍Learn more about Accel’s relationship with Sentry:

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‍Explore more episodes from this season:‍

S2E1 | Klaviyo’s Andrew Bialecki on proving a tech startup can be built anywhere

S2E2 | Webflow’s Vlad Magdalin on the biggest lessons learned from bootstrapping and raising capital

S2E3 | Syrup’s James Theuerkauf on building an AI-powered product that cuts through the noise

S2E4 | Sysdig’s Suresh Vasudevan on embracing a “challenger mindset”

S2E5 | CrowdStrike’s George Kurtz on building a generational company

S2E6 | Accel’s Amit Kumar and Ivan Zhou on being an effective startup partner when things don’t go according to plan

S2E7 | Remote’s Marcelo Lebre on the future of the global workforce

S2E8 | Gamma’s Jon Noronha on how early-stage startups can challenge industry incumbents

S2E9 | Monte Carlo’s Barr Moses on creating a playbook for a product that’s never been built before

S2E10 | ConductorOne’s Alex Bovee on the critical ingredients of a high-growth startup

S2E11 | Netskope’s Sanjay Beri on building an iconic company through controlled innovation

S2E12 | Chainalysis’ Jackie Burns Koven on building trust in new technologies

S2E13 | Wonder’s Marc Lore on blending vision and execution‍

S2E14 | 1Password’s CEO Jeff Shiner on on balancing B2B and B2C customers in a rapidly evolving tech landscape

S2 Bonus Episode 1| How Linear’s Karri Saarinen is Redefining What Scale Looks Like

Daniel Levine
Episode Host

Daniel Levine

Daniel Levine is a Partner at Accel. He specializes in product-first startups aimed at consumers, developers, and bottoms-up business users.

Focus

Consumer, Cloud/SaaS, AI

Based In

Bay Area

Read more about Daniel Levine
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