PostHog

From Hogpedia, the free encyclopedia

PostHog is an open-source platform for building software products. It combines product analytics, session replay, feature flags, experiments, error tracking, surveys, web analytics, a data warehouse, and a customer data platform in a single tool.[4] The company of the same name was founded by James Hawkins and Tim Glaser on 23 January 2020.[1]

PostHog is built for engineers who make product decisions themselves, a role the company calls a product engineer. Its core is open source and can be self-hosted, and it also sells a hosted cloud service with a free monthly allowance on every product.[8]

Overview[edit]

A product team usually buys one tool to measure behavior, a second to record sessions, a third to control feature releases, and a fourth to run tests. Each holds a separate copy of the user data, so a question that crosses two of them is hard to answer.

PostHog puts those tools on one event database. The same user can be counted in a funnel, watched in a replay, targeted by a flag, and enrolled in an experiment with no data export in between. This is the company's main argument for itself.[4]

History[edit]

PostHog was its founders' sixth idea. Their first was a tool to help engineers manage technical debt.[1]

The company entered Y Combinator's W20 batch and released its first version on Hacker News four weeks after the first line of code. More than 300 self-hosted deployments followed within days, and the GitHub repository passed 1,500 stars two weeks later.[1]

PostHog has raised six rounds, approximately $194m in total as of October 2025. Investors include Y Combinator's Continuity Fund, GV, 1984 Ventures, Tapas Capital, Formus Capital, Stripe, and Peak XV Partners.[1][2] The two PostHog sources disagree on the dates of the early rounds, and History of PostHog sets out the disagreement rather than resolving it.

Products[edit]

PostHog groups its products by the question each one answers.

ProductWhat it answers
Product analyticsHow do people use the product?
Web analyticsWhere does the traffic come from?
Session replayWhat did this person actually do?
Feature flagsWho can see this feature?
ExperimentsDid the change work?
Error trackingWhat is broken, and for whom?
SurveysWhat do people say?
Data warehouseWhat do the other systems know?
CDPWhere else must this data go?
AI observabilityWhat are the model calls doing?

The current list, with prices, is on the products page.[4]

Philosophy[edit]

PostHog states its mission as equipping every developer to build successful products.[3] Three positions follow from it:

  • The engineer makes the decision. The tools sit together because one person uses all of them.
  • Prices are published, and cut. PostHog publishes its pricing and has reduced it more than once.[8]
  • Write it down. Decisions are recorded in public, in the handbook.[5]

Open source[edit]

The PostHog application is open source and the repository is public.[7] A team can run it on its own infrastructure, which was the original reason people adopted it: the first release attracted self-hosted deployments, not cloud sign-ups.[1]

The paid product is the hosted service. The code is free; running it is what costs money.

Company culture[edit]

PostHog has been fully remote since it was founded, and writes decisions down rather than holding meetings about them.[5] Work is organized into small teams, defined in the handbook as strictly two to six people, each owning a product area.[6]

The company also treats being strange as a value in its own right, under the name "Do more weird". For what that produces, see Category: Hog lore.

See also

References

  1. ^PostHog handbook, "How we got here"
  2. ^PostHog press kit, funding history
  3. ^PostHog handbook, "Why does PostHog exist?"
  4. ^PostHog products
  5. ^PostHog handbook, "Culture"
  6. ^PostHog handbook, "Small teams"
  7. ^PostHog on GitHub
  8. ^PostHog pricing