501(c)(3) Nonprofit Organization

Open Source Infrastructure
for Public Policy

The PSL Foundation supports open-source modeling ecosystems and advances accessible, reproducible computing in the analysis of public policy.

Our Projects Support Our Work
What we do

Our Mission

We advance accessible and reproducible computing in the analysis of public policy by supporting open-source ecosystems and the researchers who build them.

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Open Source Models

We fiscally sponsor open-source computational models that give researchers and policymakers transparent, replicable tools for rigorous policy analysis.

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Reproducible Research

We promote open science practices — publishing code, data, and methods — so that policy findings can be independently verified and built upon.

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Community Building

We connect economists, engineers, and policy experts through shared infrastructure and collaborative standards for computational policy work.

Portfolio

Fiscally Sponsored Projects

We provide fiscal sponsorship and organizational support for leading open-source policy analysis projects.

Policy Simulation Library

Policy Simulation Library

A catalog of open-source policy simulation models with consistent interfaces, enabling interoperability and collaborative policy analysis.

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Policy Change Index

Policy Change Index

Machine learning-based indicators that track shifts in government policy intent by analyzing text from official documents.

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PolicyEngine

PolicyEngine

Open-source microsimulation platform enabling anyone to model the household and budgetary impact of tax and benefit policy changes.

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QuantEcon

QuantEcon

Open-source code, teaching materials, and a global community for quantitative economics, econometrics, and decision science.

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Open Rent Initiative

Open Rent Initiative

Open data and tools to make rental markets more transparent for tenants, researchers, and policymakers studying housing costs.

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Support Open Policy Analysis

PSL Foundation is a 501(c)(3) public charity. Your tax-deductible donation helps sustain and grow the open-source tools powering evidence-based policymaking.

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