The Best of JacHacks SF
The standout projects, built in one day, in person at Founders, Inc., July 2026.
TRACTION
Elijah Umana, Becky Zhu
Five research lanes run in parallel to find the people already complaining about your problem, verify them across LinkedIn and GitHub, then email, call, and book the interviews.
Trails
Harshith Sai Mannaru, Tirth Suba, Aarnav Gutti
Five agents walk a graph of your evidence like ants, marking connections as they go, and hand research teams the reasoning chains behind a theory instead of a confident paragraph.
Recall
Aswath Jacob, Arshmeet Sodhi, Umang Sharma, Likhith Ramesha
A networking memory that runs on your glasses, captioning the conversation and building a Jac graph of who you met, what they are raising, and what you owe them, recalled with one gesture.
Lemons
Manit Guliani
Ask it about any Kalshi or Polymarket outcome and it runs roughly 3,500 simulations over news, historical stats, and public sentiment to hand back a research backed prediction in under 20 seconds.
SafeRelay
Rishabh Bansal, Aditya Das
When the cell towers are gone, SafeRelay hops 25 byte emergency reports from phone to phone over Bluetooth and pushes them to responders the moment any device regains a signal.
Brailed
Kaushik Chekka, Dhruv Gupta, Yash Kathrani
A phone mounted device for blind and deaf users, built from about $10 in parts: type braille on a six key chord, read live captions on an OLED, and drive the phone with natural language.
MEDUSA
Sidhant Parashar, Rohit Kancharla, Sujay Kanakamedala
Turns a plain English mission into a hardware design pulled from a defense team's own inventory, walking a Jac graph of sensors, compute, comms, and power and flagging every incompatibility with evidence.
Blackstar
Nityanth Maramreddy, Ryan Rana, Azra Bano, Ayaan Faisal
Stress tests a hospital power grid before disaster strikes, simulating cascading failures, computing how long critical care survives, and turning every outage into an auditable hardening plan.
