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14,448 startups · 29 programs

Epicenter

Active · ChatGPT's memory feature in an open, portable format

WebsiteYC profile

Why it ranks

How the rank works
4signal of 100 · rising 3
  • went through YCProgram · this site+4

A sum of public facts, not a judgement and not investment advice.

Competitors

OtherWorkFlowyShared: text editor, note-taking, productivityYC S10New York CityStartup →AILindyShared: personal assistantAI Grant Batch 2Startup →OtherAcquiredCloverShared: text editor, note-taking, productivityYC S20NYStartup →AIInactiveUpfrontShared: personal assistant, ai assistant, textYC W23San FranciscoStartup →AIFollowUpThenShared: personal assistant, productivity, featureYC S17San FranciscoStartup →
Companies closest to Epicenter
Company
WorkFlowyShared: text editor, note-taking, productivityYC S10ActiveOther
LindyShared: personal assistantAI Grant Batch 2Not statedAI
CloverShared: text editor, note-taking, productivityYC S20AcquiredOther
UpfrontShared: personal assistant, ai assistant, textYC W23InactiveAI
FollowUpThenShared: personal assistant, productivity, featureYC S17ActiveAI

Adjacent

OtherThe Sentience CompanyShared: memory, portableSPC 2025New YorkStartup →OtherSpextShared: text editorAlchemist Class 24BerkeleyStartup →AIUnderstood CareShared: personal assistant, ai assistantYC S24New York CityStartup →AIRowboat LabsShared: ai assistant, productivity, memoryYC S24BengaluruStartup →OtherfaffShared: personal assistantEF 2025BangaloreStartup →
Companies next to Epicenter
Company
The Sentience CompanyShared: memory, portableSPC 2025Not statedOther
SpextShared: text editorAlchemist Class 24Not statedOther
Understood CareShared: personal assistant, ai assistantYC S24ActiveAI
Rowboat LabsShared: ai assistant, productivity, memoryYC S24ActiveAI, Devtools
faffShared: personal assistantEF 2025Not statedOther

Also from S25 in AI

All of S25
AICharThe AI notepad that knows and works for youYC S25SeoulStartup →AISlashyCursor for EmailYC S25San FranciscoStartup →AIBlueAI rebuilt coding. We’re rebuilding the phoneYC S25San FranciscoStartup →AICactus ComputeAutomation Foundation Models For Tiny DevicesYC S25San FranciscoStartup →AICLODOPlanet-scale people discovery.YC S25San FranciscoStartup →AIDoeThe boring stuff, handled. Everything else, supercharged.YC S25San FranciscoStartup →
Company
CharThe AI notepad that knows and works for youteam of 3ActiveAI, Devtools
SlashyCursor for Emailteam of 3ActiveAI
BlueAI rebuilt coding. We’re rebuilding the phoneteam of 7hiringActiveAI
Cactus ComputeAutomation Foundation Models For Tiny Devicesteam of 8ActiveAI, Devtools
CLODOPlanet-scale people discovery.team of 2ActiveAI
DoeThe boring stuff, handled. Everything else, supercharged.team of 2ActiveAI, Data

Founders

  • Braden WongFounder

About Epicenter

Epicenter is an ecosystem of open-source, local-first apps that share a memory. We store all your work, notes, transcripts, chat histories, in a single folder of plain text and SQLite. Every tool we build shares this memory: your text editor, personal assistant, etc.. It's open, tweakable, and yours. Grep it, open it in Obsidian, host it wherever you like. The choice is yours. Our vision is to build a personal workspace where you own your data, choose your own AI models, and replace siloed apps with open, interoperable alternatives. All while preserving authenticity and being free and open source. ❤️

YC batch
S25 · Summer 2025
Status, per YC
Active
Category
AI, Developer tools
Team size
1
Location
San Francisco, CA, USA
Founded
2025
Checked
6h ago

YC tags: SaaS, Productivity, Open Source, Note-taking, AI Assistant

Epicenter in S25: 166 companies, 92% AI

GitHub

Epicenter: questions

Which YC batch was Epicenter in?

Epicenter was in Y Combinator's Summer 2025 batch (S25).

Is Epicenter still active?

Y Combinator lists Epicenter as active.

Who founded Epicenter?

Epicenter's founders, as listed on its YC page: Braden Wong (Founder).

Where is Epicenter based?

Epicenter lists San Francisco, CA, USA as its location on YC's directory.