Epicenter

ChatGPT's memory feature in an open, portable format

Y CombinatorSummer 2025ActiveConsumerSaaSProductivityOpen SourceNote-taking

What they do

Problem

Knowledge and work artifacts are trapped across siloed apps and proprietary platforms, making personal data hard to own, search, and reuse across tools and AI models.

Solution

Epicenter provides an open-source, local-first ecosystem of apps that share a portable memory stored in a single folder of plain text and SQLite for use across editors, assistants, and other tools.

Who it's for

Individuals and power users who want an open, local-first personal workspace (notes, chats, transcripts) with portable data and model choice.

Founders

Braden Wong

Founder

At 18, I taught myself to code while studying ethics, politics, and economics at Yale. Since then, I’ve averaged ~10k commits/year and worked at three YC startups. I wrote my 65-page senior thesis on open-source governance and digital platforms. I care deeply about data ownership, open-source, and interdisciplinary thinking. https://github.com/braden-w/ I build tools to help automate the boring parts of my writing. Hopefully, something good comes from it!