What Network Time Foundation does

Network Time Foundation (NTF) is a 501(c)(3) public benefit non-profit organization headquartered in Talent, Oregon that cultivates community-driven open source development of network time synchronization infrastructure. Founded by Harlan Stenn with IRS non-profit approval received in July 2014 (EIN 45-1739761), NTF supports what is described as the longest-running software project on the Internet — the Network Time Protocol (NTP) Reference Implementation — which runs on an estimated many tens of millions of systems worldwide.

NTF's project portfolio spans the full precision spectrum of network timekeeping. It includes the NTP Project (the reference NTP implementation), the Linux PTP Project (IEEE 1588 Precision Time Protocol for Linux with hardware and software timestamping), libptpmgmt (a C++ library with Python bindings for cross-platform PTP management), Khronos (a secure NTP selection and filtering mechanism standardized in RFC 9523 to prevent time-travel attacks), Ntimed (a high-security, high-performance NTP implementation by Poul-Henning Kamp), SyncE Projects (including Renesas synced, a user-space SyncE stack, and SyncESMC, a hardware-abstracted SyncE clock manager supporting Intel E810, Renesas ClockMatrix 8A34001, and AuraSemi 5508 PHC), and the General Timestamp API. The stack addresses applications from microsecond-precision enterprise networking to nanosecond-precision industrial and O-RAN telecom use cases, with documented Netconf/YANG integration for O-RAN compliance.

NTF operates a non-commercial, community-led go-to-market model. Revenue is generated entirely from charitable donations (via Stripe, PayPal, Google Pay, GitHub Sponsorship, donor-advised funds, and donation matching), a paid membership program, and grants — including ARIN Community Grants and Linux Foundation/Core Infrastructure Initiative support. The foundation engages its user base through a Discourse-based community forum launched in February 2026, multiple Sympa mailing lists, a monthly newsletter, social media presence across Bluesky, LinkedIn, Facebook, Instagram, and YouTube, and participation in industry conferences such as ISPCS and SCaLE. The 2026 donation goal is $1,200,000 against which $128,290 had been raised as of July 1, 2026.

Name

Network Time Foundation

Legal name

Network Time Foundation Inc.

Website

https://nwtime.org

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

11–50 employees

Short description

Network Time Foundation is a 501(c)(3) non-profit that develops and maintains enterprise-quality open source time synchronization protocols — including NTP, PTP, and SyncE — serving the global developer community and telecom infrastructure providers.

Ownership category

akta.pro rank

Product category

Network Time Synchronization Software

NAICS

Computer Systems Design and Related Services (54151)

SIC

Services-Prepackaged Software (7372)

akta.pro primary industry

Time Servers (NTP/PTP Hybrid) (HDAFAKAD)

akta.pro secondary industries

PTP/NTP Network Components & Appliances (Time-Aware Switches/Time-Stamping NICs) (HDAFAKAK), Sync-over-Ethernet (SyncE) Equipment (HDAFAKAE), Telecom Synchronization (BITS/SSU/PRC/PRS) (HDAFAKAF), Synchronization Management, Monitoring & Assurance Software (HDAFAKAJ)

Keywords

• Open source time synchronization
• Network time protocol
• Precision time protocol
• Synchronous ethernet
• Clock synchronization software

Headquarters

HQ city

Talent

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Operations, Infrastructure

Revenue model

1. Donations: Charitable donations from individuals and corporations. The foundation is a 501(c)(3) public benefit corporation. Donors can contribute via credit card (Stripe, PayPal, Google Pay), GitHub Sponsorship, donor-advised funds, and donation matching programs.
2. Membership Program: Paid membership program offering community benefits and supporting the foundation's mission.
3. Grants: Grant funding from organizations such as ARIN Community Grants and Linux Foundation/CII support for development efforts.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Network Time Foundation develops, maintains, and stewards enterprise-quality open source reference implementations of network time synchronization protocols. Its core deliverables include the NTP Reference Implementation, the Linux PTP project (IEEE 1588), the libptpmgmt library, the Khronos secure NTP selection mechanism (RFC 9523), the Ntimed NTP implementation, SyncE projects (Synchronous Ethernet tools), and the General Timestamp API. All software is distributed free of charge under open source licenses, and the foundation is funded through donations, memberships, and grants.

Product overview

Network Time Foundation supports a suite of enterprise-quality open-source timekeeping projects. The core portfolio includes the NTP Project (the longest-running Internet software project, providing time synchronization over networks), the Linux PTP Project (IEEE 1588 PTP implementation for high-precision synchronization), libptpmgmt (cross-platform PTP management library with Python bindings), Khronos (RFC 9523 secure NTP selection/filtering to prevent time attacks), and the Ntimed Project (high-security, high-performance NTP implementation with client/slave/master packages). The SyncE Projects platform encompasses Renesas synced (user-space SyncE stack) and SyncESMC (hardware-abstracted SyncE clock manager supporting multiple PLL vendors). The General Timestamp API (GTSAPI) defines a new timestamp structure with error measurements and timescale support. Together, these projects address timekeeping needs from microsecond-precision enterprise networking to nanosecond-precision industrial applications.

Differentiator

Problem solved

Functional benefit

Products and services

• NTP Project (Network Time Protocol Reference Implementation) NTF's flagship open source reference implementation of the Network Time Protocol, providing enterprise-quality time synchronization for computers over networks. Designed to demonstrably prove the NTP Protocol specification is portable and robust. Used by network operators, system administrators, and organizations requiring accurate time across distributed systems.
• Linux PTP Project Open-source implementation of IEEE 1588 Precision Time Protocol (PTP) for Linux operating systems, providing hardware and software timestamping for high-precision time synchronization. Used by telecom operators, financial trading systems, and industrial automation environments requiring sub-microsecond accuracy.
• libptpmgmt C++ library with Python bindings providing cross-platform support for PTP management, enabling developers to programmatically interact with and manage PTP clocks and systems. Used by developers integrating PTP into applications or building management tooling.
• Khronos Secure selection and filtering mechanism for NTP, specified in RFC 9523, designed to prevent time travel attacks and ensure the integrity of time distribution in network environments. Used by network operators and security-conscious deployments.
• Ntimed Tightly-focused NTP implementation designed for high security and high performance, comprising ntimed-client (leaf nodes), ntimed-slave (middle layers), and ntimed-master (top layer reference clocks). Developed by Poul-Henning Kamp. Used in environments where security and performance take priority over feature breadth.
• SyncE Projects Open-source Synchronous Ethernet tools platform that facilitates the transference of traceable clock signals over Ethernet, including Renesas synced and SyncESMC implementations. Used by telecom and O-RAN solution providers requiring standards-compliant timing.
• General Timestamp API (GTSAPI) New general timestamp structure with a portable and efficient API library that includes time, known expected corrections to true time, error measurements, and timescale information. Supports UTC and TAI timescales with methods for conversion between differing timescales. Used by developers requiring a portable, standards-aware timestamp representation.
• Renesas synced Open-source user-space Synchronous Ethernet (SyncE) stack for Linux, based on ITU-T G.8264 and G.781 standards. Selects and propagates the best clock based on Quality Level (QL) through networks, supporting multiple SyncE clocks, external clocks, timing loop detection, and PTP Clock Manager interfaces. Used by telecom and network equipment vendors.
• SyncESMC (SyncE Clock Manager) Implementation of ITU-T G.781 and G.8264 for Synchronous Ethernet, providing a multi-clock hardware-abstracted implementation with HAL for integration of various PLLs. Supports Intel E810XXVDA4T, Renesas ClockMatrix 8A34001, and AuraSemi 5508 PHC hardware. Used by telecom and O-RAN solution providers.

Segments2 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature7 records

Partnerships

Three partnerships are on record, tiered core.

• Intel CorporationcoreTechnology or Integration · 1 January 2026Weifeng Voon from Intel Corporation announced the Clock Manager white paper publication. Intel collaborates on Clock Manager implementation that works with NTF's timing infrastructure.
• ARIN (American Registry for Internet Numbers)coreStrategic or Co-development Partner · 1 January 2025NTF received the 2025 ARIN Community Grant. Harlan Stenn provided progress update on augmenting GNU AutoGen to support Hugo markdown for the NTP Project at ARIN57 in April 2026.
• Renesas ElectronicscoreTechnology or IntegrationRenesas collaborated on the 'synced' open-source SyncE solution based on ITU-T G.8264 and G.781 standards. Source code hosted on Renesas GitHub with support for multiple clock types.

Scale indicators3 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Calnex Solutions: Provider of timing test, synchronization assurance, and PTP/SyncE measurement solutions. Peer to NTF's NTP/PTP/SyncE software projects, focused on validating that those timing stacks meet telecom and financial industry requirements.
• chrony: Open-source NTP client/server implementation widely deployed on Linux distributions. Direct peer to NTF's NTP Project in the same protocol space, competing for adoption in the same network administrator use case.
• NTPsec: Security-focused fork of the NTP reference implementation. Direct peer targeting the same NTP daemon use case, with overlapping maintainer community and explicit security-improvement positioning versus NTF's NTP Project.

Broad incumbents

• ADVA Optical Networking (Oscilloquartz): Provides commercial PTP grandmaster clocks and SyncE timing solutions for telecom and power-grid operators. Broad incumbent in the same PTP/SyncE standards space that NTF's Linux PTP and SyncE Projects target.
• Linux Foundation: Umbrella open-source foundation under whose Core Infrastructure Initiative NTF receives funding. Broad incumbent ecosystem steward with vastly greater scale, comparable non-profit operating model, and overlapping donor base.
• Meinberg Funkuhren: Commercial vendor of NTP/PTP time servers, grandmaster clocks, and timing accessories. Broad incumbent offering hardware-and-software timing solutions to enterprise and telecom customers where NTF's open source implementations are deployed.
• Microchip Technology (Timing & Sync): Acquired Symmetricom/Spectracom and offers commercial NTP/PTP time servers and grandmaster clocks. Broad incumbent serving telecom, financial, and power-grid customers whose infrastructure relies on the same standards NTF's open source projects implement.

Others

• Apache Software Foundation: Peer 501(c)(3) open-source foundation stewarding community-driven infrastructure projects. Comparable non-profit funding and governance model to NTF, though operating in unrelated software domains.
• Internet Engineering Task Force (IETF): Standards body that publishes the RFCs (including RFC 9523 Khronos) defining the protocols NTF implements. Not a competitor but a tightly coupled standards ecosystem peer whose roadmap directly shapes NTF's product direction.
• IEEE ISPCS: International IEEE Symposium on Precision Clock Synchronization, a key industry venue where NTF presents. Adjacent ecosystem participant rather than a competitor, but the most concentrated gathering of NTF's target technical community.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat6 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/networkTimeFnd
• GitHubgithub.com/sponsors/nwtime
• YouTubeyoutube.com/@networktimefoundation
• Facebookfacebook.com/nwtime.org
• LinkedInlinkedin.com/company/network-time-foundation-inc-
• Instagraminstagram.com/networktimefoundation

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

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M&A

Investments

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Frequently asked questions about Network Time Foundation