Who actually uses these products,
and what made them stay.

The GitHub Open Source Maintainer

A developer who maintains one or more open source projects with 500–50,000 stars. They started the project to solve their own problem and now thousands of people depend on it. They review PRs from strangers, answer issues that are really support questions, and write release notes at midnight. They are simultaneously proud of what they've built and exhausted by the weight of other people's expectations. They do this in their spare time, or they're one of the lucky few who gets paid for it.

“A teammate asked how they managed triage issues efficiently — separate bugs from feature requests from support questions.”

The Cal.com Scheduling Power User

A consultant, agency owner, or team lead who uses Cal.com because Calendly was too simple for their scheduling needs. They manage round-robin scheduling for a team, paid consultation bookings, multi-timezone availability, and custom booking forms that collect information before the meeting. They chose Cal.com because it's open-source, self-hostable, and extensible in ways Calendly's paid tiers can't match. They are the scheduling architect for their team.

“It happened mid-workflow — a consulting agency needs different scheduling for three scenarios: free 15-minute discovery calls (routed to available consultant), paid 60-minute strategy sessions (It happened mid-workflow — a consulting agency needs different scheduling for three scenarios: free 15-minute discovery calls (routed to available consultant), paid 60-minute strategy sessions (The aha moment happened the first time they used Cal.”

The Cal.com Developer Scheduler

A developer, indie maker, or privacy-conscious professional who uses Cal.com because they either self-host it or value that they can. They were on Calendly and either hit a pricing ceiling, wanted customization Calendly doesn't allow, or made a deliberate decision about data ownership. Cal.com is open source. They can read the code. They can modify it if they need to. The fact that this is possible — even if they never do it — matters to them in a way that influences their tooling choices.

“It happened mid-workflow — they're building a product that includes embedded scheduling — customers can book time with their su.”

The GitHub Software Engineer

A software engineer with 3–10 years of experience who uses GitHub as the center of their development workflow. They push code, open PRs, review others' PRs, and track issues daily. They've developed strong opinions about what a good PR looks like and suffer quietly through colleagues who don't share them. They know GitHub deeply in some areas — git blame, actions, advanced search — and use the UI for everything else because the CLI is faster until it isn't.

“A teammate asked how they managed ship code with confidence that it's been reviewed and won't break things.”

The Logseq Local-First Knowledge Builder

A researcher, developer, writer, or privacy-conscious knowledge worker who chose Logseq because their notes are plain `.md` files in a folder they control — not in a proprietary database, not in someone else's cloud. They care about data ownership in a specific way: not paranoia, but principle. They've watched tools sunset, pricing change, and export options degrade. Their Logseq graph syncs to iCloud or a private git repository. It will exist regardless of Logseq's future. They've also genuinely internalized the outliner-first paradigm. They think in bullets that can be linked and referenced anywhere else in the graph.

“They're synthesizing research for a paper.”

The PostHog Product Engineer

A product engineer or full-stack developer at a startup of 5–50 people who chose PostHog — or advocated for it — because they wanted product analytics that behave like engineering tools. They self-host or use PostHog Cloud. They instrument events themselves. They use feature flags as part of their development workflow. They are not a data analyst but they want to be able to answer product questions without filing a request to one.

“It happened mid-workflow — they've shipped a new onboarding flow behind a feature flag to 10% of users.”