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Extropy
OSS engine that simulates population reacting to events
Extropy builds representative synthetic populations and simulates how they react to real-world events. Every agent reasons individually from their own finances, job, commute, politics, and social network. We just published two studies: simulating Americans through a US-Iran war, and predicting the 2026 House midterms benchmarked against Kalshi. Open source. Define a scenario, build a population, run the simulation.
About Extropy on Product Hunt
“OSS engine that simulates population reacting to events”
Extropy was submitted on Product Hunt and earned 5 upvotes and 1 comments, placing #75 on the daily leaderboard. Extropy builds representative synthetic populations and simulates how they react to real-world events. Every agent reasons individually from their own finances, job, commute, politics, and social network. We just published two studies: simulating Americans through a US-Iran war, and predicting the 2026 House midterms benchmarked against Kalshi. Open source. Define a scenario, build a population, run the simulation.
Who hunted Extropy?
Extropy was hunted by Devesh Paragiri. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Extropy including community comment highlights and product details, visit the product overview.

