# Top 50 Collaboration Tools Startups in the United States by Funding (2026)

> The 50 best-funded collaboration Tools startups in the United States, ranked by total funding raised: $6.1B combined.

Source: https://millionrounds.com/top-lists/collaboration-startups-united-states (Millionrounds; every figure on the page links to its filing or article)

- 1 [**Slack** Screenhero lets users screen share any application with anyone, no matter where they are.](https://millionrounds.com/company/slack) Screenhero lets users screen share any application with anyone, no matter where they are. *Founded* 2013 Mountain View, United States **$1.2B** last round Aug 2018
- 2 [**Grammarly** Grammarly is a leading AI writing assistance company founded in 2009 in Kyiv, Ukraine, by Alex Shevchenko, Max Lytvyn, and Dmytro Lider.](https://millionrounds.com/company/grammarly) Grammarly is a leading AI writing assistance company founded in 2009 in Kyiv, Ukraine, by Alex Shevchenko, Max Lytvyn, and Dmytro Lider. *Founded* 2009 San Francisco, United States **$1.2B** last round May 2025
- 3 [**Genspark** Genspark is an all-in-one AI Workspace on a mission to autopilot the busywork for 1 billion+ knowledge workers.](https://millionrounds.com/company/genspark) Genspark is an all-in-one AI Workspace on a mission to autopilot the busywork for 1 billion+ knowledge workers. *Founded* 2023 Palo Alto, United States **$575M** last round Jan 2026
- 4 [**Calendly** Calendly is a cloud-based software company that specializes in scheduling automation.](https://millionrounds.com/company/calendly) Calendly is a cloud-based software company that specializes in scheduling automation. *Founded* 2013 Atlanta, United States **$350M** last round Jan 2021
- 5 [**TigerConnect** TigerConnect is a cloud-native Clinical Communication and Collaboration (CC&C) platform tailored for the healthcare industry.](https://millionrounds.com/company/tigerconnect) TigerConnect is a cloud-native Clinical Communication and Collaboration (CC&C) platform tailored for the healthcare industry. *Founded* 2010 El Segundo, United States **$300M** last round Jan 2022
- 6 [**Linear**](https://millionrounds.com/company/linear) *Founded* - United States **$236M** last round Aug 2026
- 7 [**gamma** Optimización de Negocios.](https://millionrounds.com/company/gamma) Optimización de Negocios. *Founded* 2017 Marbella, United States **$180M** last round Nov 2025
- 8 [**Granola** Granola is a SAAS company that offers AI driven note-taking services.](https://millionrounds.com/company/granola) Granola is a SAAS company that offers AI driven note-taking services. *Founded* 2023 London, United States **$168M** last round Mar 2026
- 9 [**Asana** Asana is a computer software company that specializes in the fields of work management and productivity.](https://millionrounds.com/company/asana) Asana is a computer software company that specializes in the fields of work management and productivity. *Founded* 2008 San Francisco, United States **$163M** last round Nov 2018
- 10 [**Vidyo** Millions of users around the world visually connect every day with Vidyo’s secure, scalable technology and cloud-based services.](https://millionrounds.com/company/vidyo) Millions of users around the world visually connect every day with Vidyo’s secure, scalable technology and cloud-based services. *Founded* 2005 United States **$154M** last round Aug 2014
- 11 [**Otonomy** Otonomy is an online matchmaking platform for buyers and sellers of small businesses.](https://millionrounds.com/company/otonomy) Otonomy is an online matchmaking platform for buyers and sellers of small businesses. *Founded* 2018 United States **$143M** last round Apr 2014
- 12 [**Parsable** Parsable offers a connected worker platform for industrial workers with modern digital tools to improve productivity, quality and safety.](https://millionrounds.com/company/parsable) Parsable offers a connected worker platform for industrial workers with modern digital tools to improve productivity, quality and safety. *Founded* 2013 United States **$120M** last round Aug 2020
- 13 [**iLobby** The global leader in facility and visitor management for complex enterprise](https://millionrounds.com/company/ilobby) The global leader in facility and visitor management for complex enterprise *Founded* 2012 Menlo Park, United States **$100M** last round Jan 2021
- 14 [**Paradigm** Paradigm is a frontier technology investment firm that builds and invests in crypto, AI, robotics, and across new frontiers from the earliest stages.](https://millionrounds.com/company/paradigm) Paradigm is a frontier technology investment firm that builds and invests in crypto, AI, robotics, and across new frontiers from the earliest stages. *Founded* 2018 San Francisco, United States **$85M** last round Dec 2025
- 15 [**Rocketlane** Rocketlane is an AI-powered Professional Services Automation (PSA) and customer onboarding platform that launched in 2020.](https://millionrounds.com/company/rocketlane) Rocketlane is an AI-powered Professional Services Automation (PSA) and customer onboarding platform that launched in 2020. *Founded* 2020 San Francisco, United States **$84M** last round Jul 2026
- 16 [**Figma** Figma is a collaborative design tool that enables teams to create, prototype, and test digital products on one platform.](https://millionrounds.com/company/figma) Figma is a collaborative design tool that enables teams to create, prototype, and test digital products on one platform. *Founded* 2012 San Francisco, United States **$83M** last round Dec 2025
- 17 [**Simpplr** Simpplr is an AI-powered employee experience platform founded in 2014 and based in Redwood City, California.](https://millionrounds.com/company/simpplr) Simpplr is an AI-powered employee experience platform founded in 2014 and based in Redwood City, California. *Founded* 2014 Redwood City, United States **$76M** last round May 2023
- 18 [**Highlight**](https://millionrounds.com/company/highlight) *Founded* - United States **$51M** last round Oct 2024
- 19 [**Nexus Program Management Group** Global Construction Project Management](https://millionrounds.com/company/nexus-program-management-group) Global Construction Project Management *Founded* - Addison, United States **$50M** last round Jul 2023
- 20 [**Read AI** Read AI is a Seattle-based enterprise productivity software company founded in 2021.](https://millionrounds.com/company/read-ai) Read AI is a Seattle-based enterprise productivity software company founded in 2021. *Founded* 2021 Seattle, United States **$50M** last round Oct 2024
- 21 [**Humatics** Humatics is a technology company based in Waltham, Massachusetts, founded in 2015.](https://millionrounds.com/company/humatics) Humatics is a technology company based in Waltham, Massachusetts, founded in 2015. *Founded* 2015 Waltham, United States **$46M** last round Jun 2023
- 22 [**Fieldwire** Fieldwire is a field management platform that offers a wide range of device-agnostic features for general and specialty contractors.](https://millionrounds.com/company/fieldwire) Fieldwire is a field management platform that offers a wide range of device-agnostic features for general and specialty contractors. *Founded* 2013 San Francisco, United States **$41M** last round Sept 2019
- 23 [**Highlight AI**](https://millionrounds.com/company/highlight-ai) *Founded* - United States **$40M** last round Mar 2026
- 24 [**Nitro** Nitro is a document productivity company that helps organizations accelerate business processes and drive digital transformation.](https://millionrounds.com/company/nitro) Nitro is a document productivity company that helps organizations accelerate business processes and drive digital transformation. *Founded* 2005 San Francisco, United States **$40M** last round Apr 2017
- 25 [**Teamflow** TeamFlow® is the simple visual way to understand your business, so you can say what you do, do what you say and make sure it happens.](https://millionrounds.com/company/teamflow) TeamFlow® is the simple visual way to understand your business, so you can say what you do, do what you say and make sure it happens. *Founded* 2020 Bedford, United States **$35M** last round Jul 2021
- 26 [**Almanac** Almanac is a technology company based in San Francisco, founded in 2019, that focuses on collaborative infrastructure for the digital economy.](https://millionrounds.com/company/almanac) Almanac is a technology company based in San Francisco, founded in 2019, that focuses on collaborative infrastructure for the digital economy. *Founded* 2019 San Francisco, United States **$34M** last round Sept 2021
- 27 [**Scuba** Scuba.com is a leading online and retail destination for diving gear and snorkeling equipment, established in 1990.](https://millionrounds.com/company/scuba) Scuba.com is a leading online and retail destination for diving gear and snorkeling equipment, established in 1990. *Founded* 2015 Mountain View, United States **$34M** last round Oct 2026
- 28 [**Ambi** Ambi is a developer of learner engagement platform for students.](https://millionrounds.com/company/ambi) Ambi is a developer of learner engagement platform for students. *Founded* 2016 Boston, United States **$33M** last round Oct 2026
- 29 [**Context** ConText offers conservation services for historic textiles, costume, and contemporary fiber art.](https://millionrounds.com/company/context) ConText offers conservation services for historic textiles, costume, and contemporary fiber art. *Founded* 2001 Louisville, United States **$31M** last round May 2025
- 30 [**Macroscope** Macroscope is a San Francisco-based software development company founded in July 2023 by Kayvon Beykpour, Joe Bernstein, and Rob Bishop.](https://millionrounds.com/company/macroscope) Macroscope is a San Francisco-based software development company founded in July 2023 by Kayvon Beykpour, Joe Bernstein, and Rob Bishop. *Founded* - San Francisco, United States **$30M** last round Jul 2025
- 31 [**Renal Ventures Management** Renal Ventures Management is a provider of dialysis services for patients.](https://millionrounds.com/company/renal-ventures-management) Renal Ventures Management is a provider of dialysis services for patients. *Founded* 1997 Brick, United States **$30M** last round Jan 2011
- 32 [**FileCloud** FileCloud is a hyper-secure enterprise file sync and share platform that focuses on content collaboration.](https://millionrounds.com/company/filecloud) FileCloud is a hyper-secure enterprise file sync and share platform that focuses on content collaboration. *Founded* 2016 New York, United States **$30M** last round Jul 2023
- 33 [**Declara** Declara makes is easy to discover, collect, and share knowledge with a community of like-minded people.](https://millionrounds.com/company/declara) Declara makes is easy to discover, collect, and share knowledge with a community of like-minded people. *Founded* 2012 United States **$30M** last round Jun 2014
- 34 [**Polywork** Polywork is an AI-powered platform that allows users to create high-quality personal websites quickly and easily.](https://millionrounds.com/company/polywork) Polywork is an AI-powered platform that allows users to create high-quality personal websites quickly and easily. *Founded* 2020 New York, United States **$28M** last round Sept 2022
- 35 [**Integrate**](https://millionrounds.com/company/integrate) *Founded* - United States **$23M** last round Aug 2026
- 36 [**Kumospace** Kumospace builds virtual office and virtual event software](https://millionrounds.com/company/kumospace) Kumospace builds virtual office and virtual event software *Founded* 2020 New York, United States **$22M** last round Aug 2022
- 37 [**Knapsack** Knapsack is a design company that offers web design and SEO services.](https://millionrounds.com/company/knapsack) Knapsack is a design company that offers web design and SEO services. *Founded* 2012 Lynchburg, United States **$22M** last round Oct 2025
- 38 [**Scoro**](https://millionrounds.com/company/scoro) *Founded* - United States **$21M** last round Mar 2021
- 39 [**Cluely** Cluely is an American artificial intelligence startup founded in 2025, based in San Francisco, California.](https://millionrounds.com/company/cluely) Cluely is an American artificial intelligence startup founded in 2025, based in San Francisco, California. *Founded* 2025 New York, United States **$20M** last round Jun 2025
- 40 [**RedKix** RedKix creates channels to collaborate with your team, customers, and partners.](https://millionrounds.com/company/redkix) RedKix creates channels to collaborate with your team, customers, and partners. *Founded* 2014 San Mateo, United States **$17M** last round Sept 2018
- 41 [**Pietra** Pietra is a travel company that organizes domestic and international tours and provides hotel/flight ticket booking services.](https://millionrounds.com/company/pietra) Pietra is a travel company that organizes domestic and international tours and provides hotel/flight ticket booking services. *Founded* 2012 Besiktas, United States **$16M** last round Mar 2023
- 42 [**EnvoyWorldWide** EnvoyWorldWide, a Bedford, Mass.-based provider of real-time interaction management services.](https://millionrounds.com/company/envoyworldwide) EnvoyWorldWide, a Bedford, Mass.-based provider of real-time interaction management services. *Founded* 1998 United States **$16M** last round Sept 2002
- 43 [**AeroFS** AeroFS enterprise file sync and share & collaboration solution deploys on your infrastructure.](https://millionrounds.com/company/aerofs) AeroFS enterprise file sync and share & collaboration solution deploys on your infrastructure. *Founded* 2010 Palo Alto, United States **$16M** last round Jul 2015
- 44 [**Little Bird** Little Bird analyzes social data to deliver insights for smarter enterprise marketing.](https://millionrounds.com/company/littlebird) Little Bird analyzes social data to deliver insights for smarter enterprise marketing. *Founded* 2011 Portland, United States **$15M** last round Mar 2026
- 45 [**LaunchNotes** LaunchNotes is a SaaS Product Communication Platform founded in 2019, designed to enhance how product teams share software updates, feature releases, and roadma](https://millionrounds.com/company/launchnotes) LaunchNotes is a SaaS Product Communication Platform founded in 2019, designed to enhance how product teams share software updates, feature releases, and roadma *Founded* 2019 Walnut, United States **$15M** last round May 2022
- 46 [**Yutori** Yutori is an AI company focused on developing autonomous web agents that perform everyday digital tasks, such as ordering groceries, tracking reservations, and](https://millionrounds.com/company/yutori) Yutori is an AI company focused on developing autonomous web agents that perform everyday digital tasks, such as ordering groceries, tracking reservations, and *Founded* 2024 San Francisco, United States **$15M** last round Mar 2025
- 47 [**Poke**](https://millionrounds.com/company/poke) *Founded* - United States **$15M** last round Sept 2025
- 48 [**AllSpice.io** AllSpice.io is a hardware collaboration platform designed for electronics and hardware engineering teams.](https://millionrounds.com/company/allspice-io) AllSpice.io is a hardware collaboration platform designed for electronics and hardware engineering teams. *Founded* 2020 Boston, United States **$15M** last round Jun 2025
- 49 [**Balance Theory** Balance Theory is an AI-native cybersecurity investment management company located in Columbia, Maryland.](https://millionrounds.com/company/balance-theory) Balance Theory is an AI-native cybersecurity investment management company located in Columbia, Maryland. *Founded* 2021 Columbia, United States **$14M** last round Sept 2026
- 50 [**Legra Systems** Legra Systems, Inc.](https://millionrounds.com/company/legra-systems) Legra Systems, Inc. *Founded* 2002 United States **$14M** last round Dec 2003

**Total funding** how the list is ranked

**15 November 2026** updated nightly

**Rounds we track** source: Millionrounds

Companies whose funding rounds we classed in this sector, ranked by the total they have raised in rounds we hold. Nobody pays to be on a list.

## Who backed them?

Open any company for its rounds and investors, or search the investors who back collaboration Tools startups in the United States in the app, with filters, lists and exports.

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## More collaboration tools lists

[See all](https://millionrounds.com/top-lists?t=Collaboration%20Tools)

[*G* *G* *L* **Collaboration Tools startups that raised in 2026** 32 companies · $1.0B in 2026](https://millionrounds.com/top-lists/collaboration-startups-raised-2026)[*G* *A* *P* **Collaboration Tools startups in San Francisco** 24 companies · $1.8B](https://millionrounds.com/top-lists/collaboration-startups-san-francisco)[*R* *T* *P* **Collaboration Tools startups founded in 2020** 21 companies · $263M](https://millionrounds.com/top-lists/collaboration-startups-founded-2020)[*S* *S* *L* **Collaboration Tools startups in the United Kingdom** 18 companies · $151M](https://millionrounds.com/top-lists/collaboration-startups-united-kingdom)[*RA* *U* *BT* **Collaboration Tools startups founded in 2021** 15 companies · $121M](https://millionrounds.com/top-lists/collaboration-startups-founded-2021)[*P* *L* *O* **Collaboration Tools startups in Germany** 14 companies · $331M](https://millionrounds.com/top-lists/collaboration-startups-germany)[*O* *P* *P* **Collaboration Tools startups founded in 2018** 14 companies · $432M](https://millionrounds.com/top-lists/collaboration-startups-founded-2018)[*U* *C* *B* **Collaboration Tools startups in Canada** 13 companies · $120M](https://millionrounds.com/top-lists/collaboration-startups-canada)

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[*O* *A* *X* **Startups in the United States** 42,176 companies · $870B](https://millionrounds.com/top-lists/startups-united-states)[*GV* *V* *RP* **Health startups in the United States** 7,411 companies · $71B](https://millionrounds.com/top-lists/health-startups-united-states)[*O* *A* *X* **AI startups in the United States** 5,656 companies · $718B](https://millionrounds.com/top-lists/ai-startups-united-states)[*V* *RP* *DH* **Healthcare startups in the United States** 4,148 companies · $51B](https://millionrounds.com/top-lists/healthcare-startups-united-states)[*S* *P* *I* **IT Services startups in the United States** 3,482 companies · $27B](https://millionrounds.com/top-lists/it-services-startups-united-states)[*D* *CE* *AD* **Big Data & Analytics startups in the United States** 2,107 companies · $132B](https://millionrounds.com/top-lists/big-data-startups-united-states)[*O* *A* *W* **AI startups in the United States that raised in 2026** 1,648 companies · $431B in 2026](https://millionrounds.com/top-lists/ai-startups-united-states-raised-2026)[*D* *P* *A* **Software startups in the United States** 1,638 companies · $77B](https://millionrounds.com/top-lists/software-startups-united-states)