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To use open source as marketing, release a useful piece of your product that developers can run themselves, name what it does in one line, and follow up with a guide that gets people to a first result. Perplexity open sourced its sandbox and Resend promotes React Email with a quick start guide.
Updated · By Blake Emal · 5 real examples, each linked to its source
| Move | What it earns | Real example |
|---|---|---|
| Open source the core engine | Developer trust | Perplexity SPACE |
| Quick start guide | First result fast | Resend React Email |
| Tool for a buyer job | Shares and stars | Whiteboard |
| Engineering numbers | Credibility with engineers | GitHub CSS Modules |
PerplexityOpen sourcing internal infrastructure proves technical depth and gives developers something to use today.
ResendTeaching the free tool builds trust and a path to the paid product.
WhiteboardIt solves a fresh pain, not seeing what an agent built, and open source makes it easy to try.
GitHubConcrete performance numbers are shareable among engineers.
FiboOne confident claim plus open weights invites people to test it themselves.
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We're open sourcing SPACE, the sandbox platform that runs every task in Perplexity Computer. SPACE gives each agent task its own Firecracker microVM and controls credentials and outbound traffic from outside the VM. Available now under Apache 2.0:
Perplexity on X, posted Oct 15, 2026. Perplexity’s post had 2,517 likes and 309,642 views (X API public_metrics, Oct 20, 2026 CT). See the example
The examples here open source a building block, like a sandbox or an email library, while the hosted product stays paid.
What it does in one line, the license and a link to the repo or a guide.
Mostly. It works best when your buyers are the people who would run the code.