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14,448 startups · 29 programs

cmux

Active · Open source applied AI lab building next-gen devtools

WebsiteYC profile

Why it ranks

How the rank works
9signal of 100 · rising 4
  • went through YCProgram · this site+4
  • team of 3Team size · YC's directory+3.1
  • hiringHiring · Titles (titles.fru.dev), YC+2

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

Competitors

AIThe Company CompanyShared: lab building, appliedYC F26San FranciscoStartup →AIAdamShared: lab building, applied, agentYC W25San FranciscoStartup →AIegoShared: lab building, appliedYC W24San FranciscoStartup →AITracerShared: lab building, open, sourceYC S26San FranciscoStartup →AISterlingShared: lab building, applied, agentspeedrun SR007San FranciscoStartup →
Companies closest to cmux
Company
The Company CompanyShared: lab building, appliedYC F26ActiveAI, Devtools
AdamShared: lab building, applied, agentYC W25ActiveAI, Devtools
egoShared: lab building, appliedYC W24ActiveAI
TracerShared: lab building, open, sourceYC S26ActiveAI, Devtools
SterlingShared: lab building, applied, agentspeedrun SR007Not statedAI

Adjacent

AIMost RoboticShared: lab buildingYC S26San FranciscoStartup →AIMonteShared: lab building, applied, agentYC S25San FranciscoStartup →AINaïveShared: lab building, agentYC X25San FranciscoStartup →AICommand Line Inc.Shared: open, source, terminalAlchemist Class 33San FranciscoStartup →AICanto RealityShared: lab buildingspeedrun SR001Palo AltoStartup →
Companies next to cmux
Company
Most RoboticShared: lab buildingYC S26ActiveAI
MonteShared: lab building, applied, agentYC S25ActiveAI, Devtools
NaïveShared: lab building, agentYC X25ActiveAI, Devtools
Command Line Inc.Shared: open, source, terminalAlchemist Class 33Not statedAI, Devtools
Canto RealityShared: lab buildingspeedrun SR001Not statedAI, Data

Also from S24 in AI

All of S24
AIMem0The Memory layer for AI AgentsYC S24San FranciscoStartup →AIOpslaneAI Code Review tool that runs your appYC S24San FranciscoStartup →AIRandom LabsRandom labs is building long running autonomous coding agents.YC S24San FranciscoStartup →AIUnsloth AIOpen-Source Reinforcement Learning (RL) & Fine-tuning for LLMs.YC S24San FranciscoStartup →AICloudglueThe video context layer for AI.YC S24San FranciscoStartup →AICodeVizOne living model of your software architectureYC S24San FranciscoStartup →
Company
Mem0The Memory layer for AI Agentsteam of 10hiringActiveAI, Devtools
OpslaneAI Code Review tool that runs your appActiveAI, Devtools
Random LabsRandom labs is building long running autonomous coding agents.ActiveAI, Devtools
Unsloth AIOpen-Source Reinforcement Learning (RL) & Fine-tuning for LLMs.team of 12hiringActiveAI, Devtools
CloudglueThe video context layer for AI.team of 4hiringActiveAI, Devtools
CodeVizOne living model of your software architectureteam of 2ActiveAI, Devtools

Founders

  • Austin WangFounder
  • Lawrence ChenFounder

About cmux

An open source native macOS terminal built on Ghostty. Vertical tabs, notification rings when agents need attention, split panes, and a CLI for programmability.

YC batch
S24 · Summer 2024
Status, per YC
Active
Category
AI, Developer tools
Team size
3
Location
San Francisco, CA, USA
Founded
2024
Checked
6h ago

YC tags: Developer Tools, Open Source, AI

cmux in S24: 248 companies, 85% AI

LinkedIn

cmux: questions

Which YC batch was cmux in?

cmux was in Y Combinator's Summer 2024 batch (S24).

Is cmux still active?

Y Combinator lists cmux as active.

Who founded cmux?

cmux's founders, as listed on its YC page: Austin Wang (Founder), Lawrence Chen (Founder).

Where is cmux based?

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