Addition

Addition is a venture capital firm founded in 2020 by Lee Fixel and based in New York. It invests in founder-led, technology-enabled companies at early and growth stages, with a focus on supporting entrepreneurs to build impactful and enduring businesses.

Todd Arfman

Investor

Roshni Chandwani

Investor

Lee Fixel

Investor

Robbie Horwitz

Investor

Aasim Maknojia

Investor

Andrew Miskiewicz

Investor

Aaron Schildkrout

Investor

Jason Schneider

Partner

Jack Spiegel

Investor

Danielle Steinman

Investor

Past deals in Open Source

Speckle

Series A in 2024
Speckle is a company that provides a collaborative data hub tailored for the Architecture, Engineering, and Construction (AEC) sectors. It focuses on creating an open ecosystem that addresses the challenges of fragmentation within the industry. By offering a cloud-based platform, Speckle enables users to automate design, engineering, and construction processes. Its infrastructure includes a default set of connectors that facilitate the curation of design data and the integration of multiple data streams, allowing for advanced querying. The platform supports interoperability between different software applications, enhances real-time collaboration, and simplifies data management and versioning. This empowers clients to effectively coordinate their projects and gain valuable insights into their data footprint.

Onehouse

Series B in 2024
Onehouse offers a cloud-native managed lakehouse service built on Apache Hudi. It combines the user-friendliness of a data warehouse with the scalability of a data lake, allowing users to set up their lake in minutes and process data swiftly. Onehouse enables businesses to own their data in open formats, avoiding vendor lock-in.

Temporal Technologies

Series B in 2023
Temporal Technologies develops an open-source microservices orchestration platform that enables developers to build and operate resilient, scalable distributed applications. The platform provides workflow orchestration for tasks of any size, with built-in support for exponential activity retries and native saga pattern coordination to ensure reliable execution across microservice architectures. It also offers development, debugging, testing, resource provisioning, and monitoring tools, along with cloud services to run Temporal workloads and manage data pipelines. The company focuses on helping teams coordinate complex distributed workflows and ensure fault tolerance. Temporal Technologies was founded in 2019 and is based in Bellevue, Washington.

Flox

Series A in 2023
Flox develops a web application that enhances developer productivity throughout the software development lifecycle. The company offers SaaS products that leverage Nix, allowing enterprises to install packages, manage development and production environments, and ensure consistent software deployment across embedded devices. By enabling developers to treat environments and packages as code, Flox streamlines the process of building and managing software, promoting efficiency and reliability in development practices.

Onehouse

Series A in 2023
Onehouse offers a cloud-native managed lakehouse service built on Apache Hudi. It combines the user-friendliness of a data warehouse with the scalability of a data lake, allowing users to set up their lake in minutes and process data swiftly. Onehouse enables businesses to own their data in open formats, avoiding vendor lock-in.

Chronosphere

Venture Round in 2023
Chronosphere, Inc. is a technology company that specializes in developing an open-source metrics data platform known as M3. Founded in 2019 and headquartered in New York, the company has additional offices in Seattle, Vilnius, and Warsaw. Chronosphere's platform provides comprehensive monitoring solutions for infrastructure, applications, and business metrics, enabling organizations to manage the complexities of cloud-native environments. By offering tools that help DevOps teams quickly identify and resolve issues across various layers of the technology stack, Chronosphere enhances operational reliability and supports data-driven decision-making. The platform is utilized by prominent brands to improve developer productivity, control costs, and enhance customer satisfaction.

Anyscale

Series C in 2022
Anyscale develops and operates distributed programming platforms for simplifying distributed AI development. It offers Ray, an open-source framework enabling software developers and machine learning engineers to scale applications effortlessly from a laptop to the cloud.

Temporal Technologies

Series B in 2022
Temporal Technologies develops an open-source microservices orchestration platform that enables developers to build and operate resilient, scalable distributed applications. The platform provides workflow orchestration for tasks of any size, with built-in support for exponential activity retries and native saga pattern coordination to ensure reliable execution across microservice architectures. It also offers development, debugging, testing, resource provisioning, and monitoring tools, along with cloud services to run Temporal workloads and manage data pipelines. The company focuses on helping teams coordinate complex distributed workflows and ensure fault tolerance. Temporal Technologies was founded in 2019 and is based in Bellevue, Washington.

Onehouse

Seed Round in 2022
Onehouse offers a cloud-native managed lakehouse service built on Apache Hudi. It combines the user-friendliness of a data warehouse with the scalability of a data lake, allowing users to set up their lake in minutes and process data swiftly. Onehouse enables businesses to own their data in open formats, avoiding vendor lock-in.

Anyscale

Series C in 2021
Anyscale develops and operates distributed programming platforms for simplifying distributed AI development. It offers Ray, an open-source framework enabling software developers and machine learning engineers to scale applications effortlessly from a laptop to the cloud.

Chronosphere

Series C in 2021
Chronosphere, Inc. is a technology company that specializes in developing an open-source metrics data platform known as M3. Founded in 2019 and headquartered in New York, the company has additional offices in Seattle, Vilnius, and Warsaw. Chronosphere's platform provides comprehensive monitoring solutions for infrastructure, applications, and business metrics, enabling organizations to manage the complexities of cloud-native environments. By offering tools that help DevOps teams quickly identify and resolve issues across various layers of the technology stack, Chronosphere enhances operational reliability and supports data-driven decision-making. The platform is utilized by prominent brands to improve developer productivity, control costs, and enhance customer satisfaction.

Snyk

Series E in 2021
Snyk Ltd., established in 2015, specializes in a Software as a Service (SaaS) platform that enhances application security. It focuses on identifying, rectifying, and monitoring known vulnerabilities across critical components of modern applications, including code, open-source libraries, containers, and infrastructure as code. Snyk's offerings, such as Snyk Code (static application security testing), container vulnerability management, and application security management, integrate seamlessly with developers' workflows, improving security posture, productivity, and collaboration. With over 1,200 global customers, including industry leaders like Google and Salesforce, Snyk is recognized for its developer-first approach and strategic partnerships.

Temporal Technologies

Series A in 2020
Temporal Technologies develops an open-source microservices orchestration platform that enables developers to build and operate resilient, scalable distributed applications. The platform provides workflow orchestration for tasks of any size, with built-in support for exponential activity retries and native saga pattern coordination to ensure reliable execution across microservice architectures. It also offers development, debugging, testing, resource provisioning, and monitoring tools, along with cloud services to run Temporal workloads and manage data pipelines. The company focuses on helping teams coordinate complex distributed workflows and ensure fault tolerance. Temporal Technologies was founded in 2019 and is based in Bellevue, Washington.

Snyk

Series D in 2020
Snyk Ltd., established in 2015, specializes in a Software as a Service (SaaS) platform that enhances application security. It focuses on identifying, rectifying, and monitoring known vulnerabilities across critical components of modern applications, including code, open-source libraries, containers, and infrastructure as code. Snyk's offerings, such as Snyk Code (static application security testing), container vulnerability management, and application security management, integrate seamlessly with developers' workflows, improving security posture, productivity, and collaboration. With over 1,200 global customers, including industry leaders like Google and Salesforce, Snyk is recognized for its developer-first approach and strategic partnerships.
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