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Insights

Niche Windows/Linux OSR specializes in Windows system software, drivers, file systems, and Windows internals with solid Linux development experience, presenting a strong value proposition for clients needing deep kernel-level and cross-platform expertise.

Consulting & Training The company offers architecture and design consulting, custom software development, and training, which opens opportunities to upsell ongoing engagements, workshops, and long-term support contracts with enterprise clients.

Global Clientele With a worldwide client base and a free technical content channel The NT Insider, OSR can leverage thought leadership and case studies to penetrate new markets and establish credibility in target industries.

Strong Tech Stack Utilizing Atlassian, Microsoft 365, Google Cloud, WordPress and other tools signals readiness for modern cloud-native projects, collaboration platforms, and scalable software initiatives appealing to mid to large enterprises.

Growth Signals Recent funding and news activity around OSR and related subsidiaries suggests potential for strategic partnerships, reseller opportunities, or acquisitions that could expand service offerings or geographic reach.

Similar companies to OSR

OSR Tech Stack

OSR uses 8 technology products and services including Atlassian, WordPress, Mailchimp, and more. Explore OSR's tech stack below.

Media & News

OSR's Email Address Formats

OSR uses at least 4 email formats:
OSR Email FormatsExamplePercentage
FirstLast@osr.comJohnDoe@osr.com
32%
Last@osr.comDoe@osr.com
27%
First.Last@osr.comJohn.Doe@osr.com
24%
First@osr.comJohn@osr.com
17%

Frequently Asked Questions

What is OSR's phone number?

Minus sign iconPlus sign icon You can contact OSR's main corporate office by phone at
+1-603-595-****
. For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is OSR's stock symbol?

Minus sign iconPlus sign iconOSR is a publicly traded company; the company's stock symbol is OSRH.

What is OSR's official website and social media links?

Minus sign iconPlus sign iconOSR's official website is osr.com and has social profiles on LinkedIn and Crunchbase.

How much revenue does OSR generate?

Minus sign iconPlus sign icon As of September 2026, OSR's annual revenue is estimated to be $25M - $50M.

What is OSR's NAICS code?

Minus sign iconPlus sign iconOSR's NAICS code is 5112 - Software Publishers.

How many employees does OSR have currently?

Minus sign iconPlus sign iconAs of September 2026, OSR has approximately 175 employees across 5 continents, including North America, Europe and Asia. Key team members include Chief Executive Officer: W. P., Owner: P. M. and Owner: R. W. Explore OSR's employee directory with LeadIQ.

What industry does OSR belong to?

Minus sign iconPlus sign iconOSR operates in the Software Development industry.

What technology does OSR use?

Minus sign iconPlus sign iconOSR's tech stack includes Atlassian, WordPress, Mailchimp, Microsoft 365, Google Cloud, MooTools, WP Engine and Yoast SEO.

What is OSR's email format?

Minus sign iconPlus sign iconOSR's email format typically follows the pattern of FirstLast@osr.com. Find more OSR email formats with LeadIQ.

How much funding has OSR raised to date?

Minus sign iconPlus sign icon As of September 2026, OSR has raised $2M in funding. The last funding round occurred on Dec 18, 2012 for $2M.

When was OSR founded?

Minus sign iconPlus sign iconOSR was founded in 1993.
OSR logo

OSR

Software DevelopmentNew Hampshire, United States51-200 Employees

OSR Open Systems Resources, Inc. is a software development firm that specializes in system software. Its work centers on Windows internals, including device drivers and file systems, and it focuses on debugging complex Windows problems; the company also has developed Linux system software capabilities over its long track record. It offers architecture and design consulting, custom software development, training, and tool kits for a worldwide client base, and it provides free technical content through The NT Insider, its electronic journal. Based in Manchester, New Hampshire, the firm positions itself as a deep expert in Windows and Linux system software, serving organizations that require advanced software engineering and troubleshooting. With roughly two decades of hands-on experience, OSR supports clients globally to address complex software challenges through its consulting, development, and training services.

Section iconCompany Overview

Phone number
+1-603-595-****
Website
osr.com
Stock Symbol
OSRH
NAICS Code
5112 - Software Publishers
Founded
1993
Employees
51-200

Section iconMedia & News

Section iconFunding & Financials

  • $2M

    OSR has raised a total of $2M of funding over 1 rounds. Their latest funding round was raised on Dec 18, 2012 in the amount of $2M as a Seed.

  • $25M - $50M

    OSR's revenue is estimated to be in the range of $25M - $50M

Company Leadership

  • Chief Executive Officer at OSR
    W. P.
    Chief Executive Officer
    Mobile Phone
  • Owner at OSR
    P. M.
    Owner
    Mobile Phone
  • Owner at OSR
    R. W.
    Owner
    Mobile Phone
  • Owner at OSR
    A. P.
    Owner
    Mobile Phone
  • Managing Partner at OSR
    J. S.
    Managing Partner
    Mobile Phone

Employee Directory

  • Vice President at OSR
    D. R.
    Vice President
    Mobile Phone
  • Manager at OSR
    S. R.
    Manager
    Mobile Phone
  • Data Manager at OSR
    S. S.
    Data Manager
    Mobile Phone
  • Manager at OSR
    M. P.
    Manager
    Mobile Phone
  • Receiving Clerk And Lead at OSR
    C. A.
    Receiving Clerk And Lead
    Mobile Phone

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