We seek to partner with exceptional, category-defining leaders across our sectors of focus.

Investing in category-defining innovators across the technology sector, from software to semiconductors to services.
Partnering with organizations across the healthcare ecosystem that are working to make a positive impact on quality, access and efficiency.
Backing category-leading growth companies in financial services, consumer, business services and industrial technology.
Our Portfolio
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Company
Sector
Status
Description
Price Interactive

Interactive voice response services
PriceInteractive provides high-volume interactive voice response services, which allow organizations to provide automated customer service information on a 24/7 basis, without the need for a live operator.
AltoCom

Communications software/IP
AltoCom develops, markets and licenses intellectual property cores, which provide communications solutions to the embedded systems, remote access server, and personal computer markets.
3 Day Blinds

Custom window coverings
3 Day Blinds is the largest manufacturer and retailer of hard window coverings in the U.S. Its products are manufactured to individual customers’ specifications.
Dorn Technology Group

Software solutions for the insurance industry
Dorn Technology Group provides software solutions for the insurance industry. Its product is used primarily by risk and claim managers, adjusters, insurance managers, attorneys, and third-party administrators.
InstallShield Software

Software installation tools
InstallShield Software provides professional Windows software installation and development tools.
GERS

Information management for retail organizations
GERS Retail Systems is a worldwide leader in information management software, hardware, and service solutions for the retail and direct marketing industries.
Sanitors

Janitorial services
Sanitors is a regional provider of janitorial and maintenance services, primarily for office buildings, retail and institutional facilities.
OPNET Technologies

Management software for networks and applications
OPNET Technologies provides software tools for planning, modeling, and simulating communication networks and distribution systems.
Clontech Laboratories

Testing material for molecular biology research
Clontech Laboratories provides reagents and testing material for the molecular and cellular biological research markets.
NetCom Systems

Network test equipment
Netcom Systems specializes in high-performance test equipment systems for the networking industry.
E-TEK Dynamics

Optical components and subsystems
E-TEK Dynamics designs and manufactures quality fiber-optic components that enable next-generation optical networks.
photonics
Ditech Networks

Telecom equipment
Ditech Networks is a provider of echo cancellation and voice processing solutions, which enable service providers to improve the quality of wireless, wireline, and voice-over-packet networks.
Elumen Solutions

Healthcare consulting and professional services
Elumen Solutions provides a range of IT consulting and implementation services to healthcare providers.
Card Capture Services

Independent ATM provider
Card Capture Services provides turnkey automated teller machine (ATM) packages, which enable merchants to take advantage of the growth in the use of off-premises ATM machines.
Somero Enterprises

Laser-controlled screeding equipment
Somero Enterprises manufactures and distributes laser-controlled screeding equipment for concrete finishing.
GHz Technology

High-performance RF and microwave silicon power transistors
GHz Technology provides high-performance RF and microwave silicon power transistors for the telecommunications, electronics, and avionics industries.
IMPAC Medical Systems

Healthcare IT solutions
IMPAC Medical Systems provides integrated clinical and administrative management systems for cancer specialists.
Educational Services Institute

Corporate and professional skills training
Educational Services Institute provides professional skills training, specializing in project management, procurement, government contract law, and related disciplines.
Harris Research

Carpet cleaning services
Harris Research is a franchisor of carpet and upholstery cleaning businesses.
Triton Systems

Automated teller machines
Triton Systems is a manufacturer of automated teller machines in the off-premise market and one of the three leading ATM manufacturers in the United States.
Omtool

Client/server fax automation software
Omtool provides client/server fax automation software. The company’s fax server allows corporate users to avoid the costs of fax machines, monthly phone charges, and desktop modems.
MCK Communications

Distributed voice solutions for the extended enterprise
MCK Communications provides telecommunications products that extend the functionality of corporate telephone systems, or PBXs, to remote locations.
First Marketing Company

Publisher of custom newsletters
First Marketing Company publishes custom newsletters in the United States, printing over 350 million copies each year.
Pacer Electronics

Wire, cable and related supplies
Pacer Electronics is a distributor of wires, cables, and related supplies to OEMs and VARs.
Intelligroup

Information technology services
Intelligroup is an information technology services firm specializing in the implementation of enterprise-wide software solutions.
Insync Systems

Gas control systems and subassemblies
Insync Systems designs, manufactures and markets ultra clean gas control systems and gas system subassemblies to semiconductor equipment manufacturers.
Cardiovascular Provider Resource

Practice management services
Cardiovascular Provider Resource Holdings Inc. is a provider of practice management services to physicians specializing in cardiology and cardio vascular care.
TransEnergy

On-line exchange for energy trading
TransEnergy Holdings is a leading provider of client/server technical software products for the energy industry.
Splash Technology Holdings

Color server systems
Splash Technology produces raster image processors that allow ordinary photocopiers to function as digital color copiers.
DSET

Software for the telecommunication industry
DSET Corporation provides distributed software development tools for the telecommunications industry. DSET’s products are used by telecommunications carriers and equipment vendors to automate and support complex network management functions.
HMT Technology Corporation

Storage media
HMT Technology Corporation is an independent supplier of high performance thin-film disks for high-end, high-capacity hard disk drives for PCs, network servers, and work stations.
SeaChange International

Digital advertisement insertion systems
SeaChange International is a provider of digital advertisement insertion systems for the cable TV industry. SeaChange uses industry-standard components for connecting digital storage media to high bandwidth networks.
Paragon Vision Sciences

Polymer materials for contact lenses
Paragon Vision Sciences is a manufacturer of the polymer materials used in the manufacture of rigid gas permeable contact lenses.
Powerwave Technologies

Wireless infrastructure equipment
Powerwave Technologies provides linear radio frequency powered amplifiers to the wireless communications industry. These power amplifiers are key components for wireless communications networks.
Suburban Ostomy Supply

Disposable home healthcare products
Suburban Ostomy Supply distributes disposable home healthcare products, primarily ostomy, urological, diabetic, and wound-care items.
AMX Corporation

Advanced control and automation technology
AMX Corporation designs and manufactures integrated control devices and related software.
Wilmar Industries

Home repair and maintenance products
Wilmar Industries (now known as Interline Brands) provides home repair and maintenance products, offering more than 15,000 plumbing, electrical, janitorial, hardware, HVAC, appliance, window, and door parts.
Rehab Management Services

Rehabilitation services
Rehab Management Services is a rehabilitation services company offering physical and occupational therapy in the Southeastern United States.
Diamond Multimedia Systems

Multimedia peripheral products
Diamond Multimedia Systems, Inc. designs, manufactures, and markets board-level peripheral products for IBM- compatible PCs.
Software Artistry

Enterprise software for problem tracking and resolution
Software Artistry develops and markets scalable, enterprise-wide software for problem tracking and resolution. The software is used by help desks and technical support departments.
COMPS.com

Information services for real estate transactions
COMPS.COM is a database publisher and information services provider of confirmed real estate transaction data for residential and commercial properties.
Catalyst International

Warehouse management software
Catalyst International is a leader in development and implementation of warehouse management software systems for warehouses, distribution centers, and manufacturing plants around the globe.
MECON Associates

Hospital operation benchmarking
MECON Associates provides operations benchmarking data, decision support software, and other value-added information services to hospitals.
A+ Network

Paging, voicemail and cellular telephone services
A+ Network is a provider of paging, voicemail, cellular telephone and telemessaging services in the Southeastern United States.
AmeriPath

Pathology laboratory services
Founded by physicians, AmeriPath specialized in dermatopathalogy, the review and interpretation of human tissue biopsies. While the company had developed a strong and loyal referring physician customer base in the southeastern United States, the founders aspired to expand the business to a national scale through the consolidation of the fragmented industry. The company turned to Summit for financing and strategic guidance.
Simulation Sciences

Simulation software for the petroleum and chemical industries
Simulation Sciences provides process control simulation software for the petroleum and chemical industries. The company’s suite of software products and services assists process engineers in the design and optimization of plants and refineries.
TGV Software

Standards-based Internet working software
TGV Software develops and markets an integrated set of standards-based inter-networking software for the VMS operating environment.
Academic Management Services

Tuition budgeting programs and student loans
Academic Management Services is a leading provider of tuition budgeting programs and an originator of student loans.
United Dental Care

Managed dental care company
United Dental Care is a managed care company which operates prepaid dental plans in Kansas, Missouri, Ohio, Pennsylvania, and Texas through its affiliation with more than 650 dentists.
SteriGenics International

Sterilization services for medical devices
SteriGenics International designs, operates, and manages facilities that provide contract gamma sterilization services to large medical supplies companies.
Xylan Corporation

High-bandwidth switching systems
Xylan Corporation provides high-bandwidth switching systems that enhance the performance of existing local area networks and facilitate migration to next-generation networking technologies.
Chase Federal Bank

Thirft bank holding company
Chase Federal Bank offers households a menu of services that includes checking, passbook savings, short term CDs, annuity sales, traveler's checks, home mortgages, and various loans.
Intri-Plex Technologies

Precision components for computer peripheral equipment
Intri-Plex Technologies manufactures precision components and provides component assembly for computer peripheral equipment.
IntelliQuest Information Group

Quantitative marketing research
IntelliQuest Information Group supplies quantitative marketing research to high-tech companies.
CIDCO

Telephone and caller ID products
CIDCO provides add-on Caller ID equipment for residential and small business users.
Superior Services

Waste management and environmental services
Superior Services is a waste management and environmental services company. It provides removal, disposal and other services to generators of biomedical and hazardous waste.
MEDNAX

Physician practice management
Founded as Pediatrix Medical Group, MEDNAX provides neonatology and pediatric services to hospitals on a management contract basis.
Fiber Options

Fiber optic transmission products
Fiber Options designs, develops, and supports a family of transmission products for fiber optics networks.
Extended Systems

Connectivity products for PCs
Extended Systems provides connectivity products which improve the performance of personal computer systems and peripheral devices.
CDB Infotek

Online research services for commercial transactions
CDB Infotek provides online information services and research for commercial transactions and business litigation.
Home Health Corporation of America

Home healthcare services
Home Health Corporation of America provides home healthcare services that include personal care, nursing, specialized therapies, durable medical equipment, and supplies.
Prompt Associates

Insurance services
Prompt Associates provides cost-containment services that allow insurance companies and self-insured entities to reduce spending on outpatient facility charges.
Microbank Software

Software for financial institutions
Microbank Software develops, markets and supports software products that automate client service, account reconciliation, and data management for financial institutions.
Boca Research

Board products for IBM-compatible PCs
Boca Research designs, manufactures and markets expansion board products for IBM-compatible PCs.
Kaye Group

Commercial insurance brokerage
Kaye Group offers insurance brokerage, risk management, and underwriting services through traditional distribution methods, business-to-business e-commerce channels, and strategic alliances.
McAfee

Network management and security software
McAfee creates computer security solutions that prevent intrusions on networks and protect computer systems from the next generation of blended attacks and threats.
Hyperion Software

Business information software
Hyperion Software Corporation (formerly IMRS) provides enterprise software and services for Business Performance Management.
InterCommunity Cancer Centers of America

Outpatient cancer treatment centers
InterCommunity Cancer Centers of America is engaged in the development and operations of outpatient cancer treatment centers.
Astech

Aerospace components
ASTECH provides lightweight, high-strength, heat resistant and noise suppression superalloy honeycomb structures for commercial and military aircraft.
Softdesk

AutoCAD applications software
Softdesk develops and markets a family of fully integrated software products for the architectural, civil engineering and construction markets.
Structural Research and Analysis Corporation

Mechanical design software
Structural Research and Analysis offers a family of PC and workstation-based software products for automating the mechanical design process.
Lincare

Home-care services
Originally a part of Union Carbide, Lincare—a provider of home medical care—became an independent company in 1990. The market for home respiratory services and equipment was fragmented, and Lincare’s management believed that there was significant potential for expansion through internal growth and acquisition. Under the leadership of founding CEO Jim Kelly, the team sought financial partners to fund not just current operations, but also future growth.
ImageAmerica

Outpatient diagnostic imaging centers
ImageAmerica, which became MedAlliance, is a developer and manager of freestanding, multi-modality, outpatient diagnostic imaging centers.
Active Voice

Call processing systems
Active Voice Corporation designs, develops, and markets call processing systems for small to medium size businesses with fewer than 200 employees.
Artisoft

DOS-compatible LAN systems
Artisoft develops, manufactures, and markets LANtastic, the leading DOS-compatible, peer-to-peer local area network (LAN) system for small networks.
Renal Treatment Centers

Kidney dialysis services
Renal Treatment Centers is an independent provider of outpatient kidney dialysis services to patients suffering from chronic kidney failure.
Pharmaco Dynamics Research

Clinical research services
Pharmaco Dynamics Research is a provider of clinical research services to large pharmaceutical companies.
Intellution

Process control software
Intellution develops and supports process control software for continuous flow plans.
Archive

Tape cartridge drives and tape drive subsystems
Archive Corporation is a designer, manufacturer and marketer of a broad line of removable media tape cartridge drives and tape drive subsystems.
Software 2000

Enterprise software
Software 2000 provides enterprise business solutions.
Saber Software Corporation

Software products for local area networks
Saber Software Corporation develops and markets PC utility software products for local area networks.
Software Spectrum Corporation

PC based software products
Software Spectrum Corporation markets PC based software products to large corporate and government end-users.
Future Domain

Peripheral controller and interface hardware
Future Domain Corporation designs and markets peripheral controller and interface hardware, software, and integrated circuits compatible with the Small Computer Standard Interface.
Platinum Software Corporation

Accounting software products
Platinum Software Corporation provides accounting software products for the client/server environments.
Digital Link

Communications products for T-1 transmissions
Digital Link Corporation is a designer, manufacturer and marketer of voice and data communications products used to support T-1 transmissions.
Clean Harbors

Hazardous waste management and environmental services
Clean Harbors is North America's leading provider of environmental and hazardous waste management services, providing essential services to over 45,000 customers.
Integrated Systems

Computer aided engineering products
Integrated Systems provides software, tools, and engineering services for the embedded systems market.
Chips and Technologies
Application-specific integrated circuits
Chips and Technologies provides application-specific integrated circuit design and manufacturing.
Telebit Corporation

Products for data communication networks
Telebit Corporation is a designer, manufacturer, and marketer of products for data communication networks. In 1993, Summit Partners portfolio company Octocom Systems was acquired by Telebit.
AdvaCare

Physician office management
AdvaCare Inc is a network of companies that manage physician offices and provide ancillary medical services.
Employee Benefit Plans

Health and accident insurance services
Employee Benefit Plans provides health and accident insurance services to self-funded entities.
FSI International

Processing equipment for semiconductor manufacturing
FSI International is a global supplier of surface conditioning equipment technology and support services for microelectronics manufacturing.
Aehr Test Systems

Semiconductor test and burn-in equipment
Aehr Test Systems designs, manufactures and markets burn-in and test equipment for semiconductor manufacturing.
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