Ployz
The open-source cloud on servers you rent
Developer Tools·Data & Infrastructure
What is Ployz?
Ployz is an open-source, self-hosted PaaS that turns servers you rent into your own cloud. Deploy apps and databases with a dashboard, as an alternative to Heroku, Vercel or Coolify. Built with Rust, TypeScript, PostgreSQL and Docker, Ployz gives you a familiar platform-as-a-service developer experience on infrastructure you fully control. Spin up services, manage environment variables, inspect logs and scale deployments from one clean interface — no vendor lock-in and your data never leaves your own servers. Whether you are running side projects or production workloads, Ployz makes self-hosting as simple as a managed platform while staying open source and free to run.
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FounderPlaybooks.
What other founders did to grow.
2722 dispatches from hundreds of founders, pulled from the week's best podcasts.
If you have a 5% buffer on retention before this price test winner is no longer a winner, maybe don't roll that one out. If retention can go down by 50% and that thing's still a winner — close your eyes and roll it out. Sensitize it to say: if retention comes in 10% worse, does it change my answer?
Price increases hurt annual retention more than monthly — sensitize tests before rolling out
Falzon describes a recurring mistake at Mosaic: price tests run against monthly subscribers produced misleading signals about annual subscriber impact. Monthly retention data arrived quickly; annual renewal data took 12+ months. Teams would roll out a price increase that looked like a winner on monthly data, then a year later discover annual churn spiked and the test was actually a loss. The fix: before rolling out any price test, model the range of retention impacts and check whether the outcome is still positive under the pessimistic scenario.
today about 20% of people who reply say that it's life-changing and our hypothesis is those are the people who are getting us dozens and dozens of new customers just by virtue of they can't stop talking about it
20% of customers calling you life-changing are your real growth engine
Skylight polls customers and finds roughly 20% describe the product as life-changing rather than just useful. Michael's hypothesis is that this cohort drives a disproportionate share of organic growth through word-of-mouth, each generating dozens of new customers. The product goal is therefore not marginal improvements across all users but engineering specific moments that move customers from very useful to life-changing, which is what turns paid growth into organic momentum.
There's a play for whatever you're stuck on.
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