Venture-Backed Startups

Cirpack develops software-based telecom core network technology, including IMS, SBC, VoIP, VoLTE, VoNR, unified communications (UCaaS) and cybersecurity solutions. It serves telecom operators, service providers and large companies across France, Europe and Latin America, positioning itself as a European independent vendor with AI features embedded in its network software.

1 investor

Cirqle is developing a hormone-free, on-demand contraceptive that uses a molecule to reinforce the natural cervical mucus barrier and block sperm. The technology is in pre-clinical development and targets women seeking non-hormonal birth control options.

1 investor

Cirql One provides a business context layer that extracts and formalizes business logic, semantics, rules, and governance from SAP and enterprise systems into reusable reasoning assets for enterprise AI applications, analytics, and automation. It targets SAP-heavy enterprises across sectors such as finance, procurement, sales, HR, and logistics, and integrates with platforms like Snowflake, Databricks, and Microsoft Fabric.

2 investors

MLM Medical Labs (which acquired CirQuest Labs) provides central and specialty laboratory services for global clinical trials, including clinical testing, biomarker assay development, clinical trial kit building, sample analysis, and biological sample storage. It serves biotech and pharmaceutical companies developing drugs, operating central labs in Germany and Memphis, Tennessee.

1 investor

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Cirrus Data Solutions builds software for block storage and application data mobility, letting enterprises migrate workloads between datacenters, public, private, and hybrid clouds with zero downtime. Its platform, Cirrus Data Cloud, offers automated migrations, intelligent quality of service (iQoS), AES 256-bit encryption, and integrations for AI agents via an MCP server and CLI.

1 investor

Cirrus Identity provides identity and access management solutions, including its Cirrus Works suite supporting single sign-on, multi-factor authentication, guest accounts, and multilateral federation (InCommon, eduGAIN). It serves universities, non-profits, research organizations, and healthcare institutions to enable Zero Trust and collaboration within the research and education community.

2 investors

Cirrus Insight offers sales productivity tools that integrate email, calendar, and scheduling with Salesforce, including team scheduling links, pre-booking questionnaires, and automatic sync of meetings and activity. It targets sales teams that want to reduce manual CRM data entry and track buyer engagement.

2 investors

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Cirrus Data Solutions provides a software-based data mobility platform (Cirrus Data Cloud) that migrates block storage, applications, and hypervisors across on-premises datacenters, public, private, and hybrid clouds with automation, encryption, and zero-downtime migration. It serves enterprises modernizing their storage infrastructure, with additional CLI, MCP server, and private-edition offerings for automation and secure environments.

1 investor

CirrusMD offers a virtual primary care platform where patients connect with a physician via chat in under 60 seconds for diagnosis, treatment, and guidance to benefits and next steps in care. It sells to self-insured employers, health plans, and benefits consultants in the U.S., using chat-enabled smart technology to surface health concerns and manage chronic and behavioral conditions.

6 investors

Cirrus Therapeutics is a biotech developing gene and cell therapies based on ocular immunology to treat dry age-related macular degeneration (AMD), including an AAV gene therapy to restore the IRAK-M immune regulator and a next-generation retinal pigment epithelium (RPE) cell therapy for advanced geographic atrophy. It serves patients with chronic blinding eye diseases and operates from Cambridge, Massachusetts and Singapore.

1 investor

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CIRT is a data and software platform for managing sustainable packaging compliance, labeling, recovery data, and impact tracking, helping brands meet regulatory requirements such as EPR reporting across multiple jurisdictions. It serves brands, manufacturers, retailers, waste/recovery operators, and institutions working on circular economy and packaging sustainability challenges.

1 investor

Cirtec provides outsourced design, development, and contract manufacturing services for medical devices, including complex Class III devices. It serves medical device companies as a development and manufacturing partner, operating in the medtech contract manufacturing sector.

2 investors

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Cisro provides equipment and inspection/measurement solutions for the electrode processing step in secondary battery (lithium-ion) manufacturing, and supplies precision measurement and defect inspection technology for semiconductor and PCB production. It also offers surface analysis and deposition technology for display manufacturing.

2 investors