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Hack for Social Impact
UpcomingOct 24-25 · 2026Wefunder HQ · San Francisco

San Francisco
2026

Hack for Social Impact is returning to San Francisco for a third year: a two-day hackathon at Wefunder HQ bringing together 200+ builders across five areas, from homelessness and healthcare to reentry and design equity.

// details
date:
Sat–Sun · Oct 24-25, 2026
venue:
Wefunder HQ
address:
1885 Mission St
city:
San Francisco, CA
format:
Two-day hackathon

In partnership with

UN Convention to Combat DesertificationTransformative Programming WorksBRIDGEGOODBoundless Freedom Project

Sponsored by

Wefunder

Problem Statements

Work on impactful problems such as…

Using world model and game engine to give communities a voice in UN land planning

Block by Block is a Minecraft-based tool for communities to design their own streets, and has run in 55 countries since 2012. However, it is unsuited to UNCCD's work in real-world land planning: Minecraft has endless resources, arbitrary terrain, and no consequence to player actions. Build a game from real satellite and GIS data showing the impact of land use, to engage the community.

Carrying a mindfulness practice across the gap between prison and release

Boundless Freedom Project can reach people inside with mindfulness and mental health practice through in-person sessions and the Edovo tablets. On release that support falls away, during the 30 days that hit hardest. Build something that keeps familiar practice at hand, holds as little personal information as possible, and assumes no smartphone and no dependable internet.

Tracking and communicating outcome data for justice reform nonprofits

California's corrections department spends under one percent of its budget on rehabilitation. Transformative Programming Works advocates for them across 120 organizations, but so far can only track process data such as who enrolled and how long a class ran. Join disjoint records such as parole and recidivism data into a framework TPW — and nonprofits generally — can use to track impact.

Expanding the work of training and education for design for good

BRIDGEGOOD's Oakland studio teaches designers to build with their own communities in mind, through conversations about identity, money and conflict that only work in a small room with a facilitator in it. That room seats a few dozen people a year. Find a way the practice can travel to designers who will never sit in it, without thinning into a slide deck.

Date

October 24-25, 2026

Location

Wefunder HQ · 1885 Mission St, San Francisco

Audience

200+ builders — engineers, NGOs & VCs

Sponsors

Interested in sponsoring Hack for Social Impact San Francisco 2026?

View Sponsorship Opportunities →

Past Events

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Get involved

For Nonprofits

Bring us a real problem. We scope it with you before the event, put a team on it for a weekend, and stay involved afterwards so the work does not stall.

  • We help write the problem statement
  • You meet the team building it
  • Project grants fund the follow-through
Tell us your problem

Sponsor

Put your product in front of hundreds of developers, and see it deployed on real social problems — a genuinely positive use case for what you have built.

  • Hundreds of developers building on your stack
  • Deployed in the real world, not a toy demo
  • Your tools credited in the work that ships
See sponsor tiers

Join our team

Volunteer at an event, or apply for the organizing team to help impactful technical solutions reach more missions and constituents.

  • Volunteering at an event
  • Applying for the organizing team
  • High-ownership roles shaping the organization
See how to join

Contact

We would love to hear from you, whether you are a nonprofit, a sponsor, press, a participant, or have something else in mind.