Deep Tech Startups

Radar Therapeutics develops precision-expressed mRNA-based therapeutics using its RADAR platform, which reads a cell's RNA profile in real time to activate genetic payloads only in targeted cells and avoid effects in non-target cells. The company applies synthetic biology, single-cell transcriptomic data, RNA-editing enzymes, and logic gates to create "smart" mRNA therapies for difficult-to-treat diseases.

1 investor

Radiaction Medical develops a plug-and-play radiation protection device for interventional medical staff that reduces scatter radiation at the source, with FDA Class II clearance for use in the United States, European Union, and United Kingdom. The company serves clinical teams managing radiation exposure during vascular and surgical procedures.

1 investor

Radiant designs, builds, and operates full-stack AI infrastructure — powered land, data centers, GPU systems, networking, storage, and managed services — delivered under a single contract and control plane. It serves AI and ML teams that need to run large GPU workloads (from thousands to tens of thousands of GPUs) without assembling infrastructure from separate providers.

1 investor

RagnaRock Geo is a Norwegian technology company that builds AI software to interpret seismic and subsurface data, predicting 3D Earth models including reservoir and rock properties. It serves geophysicists and geoscientists, supporting carbon storage, exploration, development, and production workflows.

1 investor

Rainstick develops weather-event and biotech-related technology, drawing on hardware and software engineering. The page focuses on the team but indicates the company works at the intersection of agriculture, biotech, and transformative technology.

1 investor

6over3 Institute is developing "Personal Intelligence" technology aimed at augmenting human capabilities. The company operates from Tokyo and New York City.

1 investor

Rakon designs and manufactures high-performance frequency control products such as temperature compensated crystal oscillators (TCXOs), oven controlled oscillators (OCXOs), crystals, and GNSS receiver modules. Its components serve the telecommunications, 5G, AI data centre, space, defence, and positioning markets.

1 investor

Rakurai builds a high-throughput, low-latency validator client for web3 infrastructure, aimed at blockchain validators who want to pack denser blocks and capture higher yields. Its software focuses on hardware-software co-optimization and onboarding liquidity from CeFi to DeFi while preserving decentralization and security.

1 investor

Rampersand is a venture capital firm that invests in seed-stage and pre-seed technology companies founded by ANZ (Australia/New Zealand) entrepreneurs building AI-native software, deep tech, and infrastructure solutions. The firm provides capital, operational support, and access to a network of founder-operators and tier-one institutional connections.

1 investor

RAMXEED Corporation develops and supplies non-volatile RAM memory products, offering a reliable memory product line to business customers. Formerly Fujitsu Semiconductor Memory Solution Limited, the company specializes in semiconductor memory technology.

1 investor

Ranovus provides optical infrastructure platforms that enable hyperscalers and original design manufacturers to move beyond copper interconnect limits by integrating optical engines closer to high-performance silicon in AI clusters. The company addresses system-level constraints in AI cloud infrastructure scaling through near-packaged and co-packaged optics integration.

1 investor

Rapafusyn develops molecular glue therapeutics using its RapaGlue platform of non-degrading macrocyclic compounds designed to modulate hard-to-drug intracellular and transmembrane protein targets. Its AI-enabled discovery approach and DNA-encoded library support an early-stage pipeline across oncology, immunology and inflammation, and renal disease, including a lead program in acute kidney injury.</parameter> <parameter name="hq_city">Baltimore

1 investor

Raphe develops unmanned aviation systems, designing and building its aircraft and related technology in-house through end-to-end research, development, and manufacturing. The company operates in the aerospace and defense industry.

1 investor

Rapid Novor develops protein sequencing software and methods for antibody analysis, combining bioinformatics and mass spectrometry technology. The company specializes in proteomics services for clients requiring high-throughput antibody sequencing.

1 investor

DGG develops RapidPipeline, a software platform that automates 3D asset processing and management for creative professionals and enterprises. The solution enables studios, brands, retailers, and platform companies to handle 3D digital products with the ease of 2D images.

1 investor

Raptor Dynamix develops integrated sensing and intelligence systems powered by AI for defense, intelligence, and critical infrastructure applications. The company delivers real-time autonomous solutions for space warfighting, multi-domain command and control, and time-critical operations in contested environments.

1 investor

Rasyn.ai offers Marigold, an AI research assistant that lets scientists ask research questions, run tools, or delegate entire tasks, returning results such as structures, charts, code, and papers in panels. It provides 54 runnable tools, 40 executing on connected hardware and 14 on hosted endpoints.

1 investor

Ravee Optics develops ultracompact optical communication systems and laser links for small satellites, space, and airborne platforms.

1 investor

RayBalance develops a proprietary, non-reformulation platform that treats the subcutaneous injection administration site as a delivery-performance variable to improve absorption predictability without altering a partner's drug product. It targets pharmaceutical companies, biosimilar manufacturers, and medical device companies working on follow-on/biosimilar differentiation, lifecycle strategy, and IV-to-SC transition.

1 investor

Rayence develops digital X-ray detectors for dental, medical, veterinary, and industrial applications using proprietary CMOS wafer design, TFT panel, and scintillator technology. The company exports medical device components globally and has been recognized for innovations including flexible intraoral sensors.

1 investor

Re:Build Manufacturing operates a network of specialized manufacturing facilities across the United States, providing design, engineering, prototyping, and production services for embedded systems, composites, chemical processes, and medical consumables. The company supports product development at scale with over 1,200 technical experts and advanced manufacturing capacity.

1 investor

ReOrbital develops satellite servicing and in-space manufacturing technologies for government and commercial space applications. The company specializes in orbital refueling, satellite repair, and debris removal services.

1 investor

Reach Technologies develops data acquisition equipment, instrumentation recorders, and IoT monitoring solutions for industrial, aerospace, and transportation applications, enabling predictive maintenance and performance tracking across sectors including aviation, shipbuilding, and heavy equipment.

1 investor

Reaction Biology provides drug discovery and development services for pharmaceutical companies, offering preclinical research platforms including biochemistry, in vivo efficacy testing, and patient-derived xenograft models.

1 investor