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cmux

YC S24

San Francisco, US · Founded 2024 · 3 employees · Hiring · 9 known investors

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A native macOS terminal application built on libghostty that features vertical tabs, split panes, notification alerts, and a programmable API for developers working with AI coding agents and terminal-based workflows.

Also known as Manaflow, Inc. · Manaflow

AI & Machine LearningDeveloper ToolsEnterprise SoftwareOpen SourceAIUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (S24)

cmux was founded in 2024 by Austin Wang and Lawrence Chen.

AWAustin Wang
Austin WangFounder & CEOAustin Wang is a Yale physics graduate who previously worked at NASA's Jet Propulsion Laboratory. He is co-founder and CEO of Manaflow, where he is developing an open source terminal tool.
LCLawrence Chen
Lawrence ChenCofounderLawrence Chen is a Berkeley graduate who co-founded Manaflow and previously worked at Minion AI. He is currently developing cmux.com, an open source terminal designed for coding agents.
WT
Wesley Tjangnaka

Investors · 9

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · open dataset · 5k.vc investor directory · Not right? Tell us

Amino CapitalreportedPalo Alto · $100K – $10M

How we know: Y Combinator's founder network · Not right? Tell us

Amplify PartnersreportedMenlo Park · $500K – $5M

How we know: Y Combinator's founder network · Not right? Tell us

Andreessen HorowitzreportedMenlo Park · $500K – $50M

How we know: Y Combinator's founder network · Not right? Tell us

FrialereportedNashville · $100K – $600K

How we know: Y Combinator's founder network · Not right? Tell us

Peak XV PartnersreportedBengaluru · $100K – $10M

How we know: Y Combinator's founder network · Not right? Tell us

Twenty Two VenturesreportedPalo Alto · $50K – $250K

How we know: Y Combinator's founder network · Not right? Tell us

Y Startup IndexreportedSeattle

How we know: Y Combinator's founder network · Not right? Tell us

Related companies · 6

MagnitudeMagnitude is an AI coding agent optimized for open-source language models like GLM, Kimi, and DeepSeek, designed to generate and execute code with improved reliability and efficiency. The platform serves software developers and teams looking to build with open weights models at lower cost than frontier API pricing.
Better StackBetter Stack is an observability and monitoring platform offering log management, metrics, incident alerting, and status pages for engineering teams, positioned as a cheaper alternative to Datadog. It targets software teams ranging from indie hackers to publicly traded companies.
FirecrawlFirecrawl provides an API to search, scrape, and interact with web content at scale, converting live internet data into clean markdown and structured data optimized for large language models, agents, and AI-native applications.
Random LabsRandom Labs develops Slate, an autonomous coding agent that can engage in extended work sessions on complex programming tasks.
TrieveTrieve provides backend infrastructure for implementing search, retrieval augmented generation, and recommendation systems, offering pre-built tools for ranking tuning, model customization, and hybrid semantic-keyword search.
OpenIntOpenInt provides a platform for teams to build product integrations quickly using no-code or low-code tools, offering unified APIs for data operations or direct database synchronization.

Companies working in the same space as cmux.

Legal entities · 1

corporate structure
Manaflow, Inc.

In the news

cmux: the open source terminal built for coding agentsycombinator.com · Mar 2026Manaflow - Build and manage your dream AI operations teamycombinator.com · Jul 2024

Frequently asked questions

What does cmux do?
A native macOS terminal application built on libghostty that features vertical tabs, split panes, notification alerts, and a programmable API for developers working with AI coding agents and terminal-based workflows.
Who founded cmux?
cmux was founded by Austin Wang, Lawrence Chen in 2024.
Who are cmux's investors?
cmux's investors include Scribble Ventures, Y Combinator, Amino Capital, Amplify Partners, Andreessen Horowitz, Friale, Peak XV Partners, Twenty Two Ventures and 1 more.
Where is cmux headquartered?
cmux is headquartered in San Francisco, US.