Sites like NTP

01 · Entity

About NTP

NTP ntp.org

NTP: Network Time Protocol

The NTP Project conducts Research and Development in NTP, a protocol designed to synchronize the clocks of computers over a network to a common timebase.

Wikidata: standard protocol for synchronizing time across devices

Top 100 · #86 English 6 technologies Crawled Nov 6, 2026

Visit NTP

Summary by Claude

Home of the NTP Project, which develops and maintains the open source reference implementation of the Network Time Protocol for synchronizing computer clocks, with downloads, documentation, security notices and public time server lists.

Who it’s for

System administrators, network engineers, developers

Business model

Donations

• open source time synchronization
• Network Time Protocol
• NTP reference implementation download
• clock synchronization
• public time servers
• NTP security notices
• NTP documentation
• David Mills reference library

02 · Embedding space

Competitor map

Each alternative by how close its vector is to NTP’s (x) and how much traffic it gets, how much of the stack it shares, or where it sits in the embedding space itself (y). Lines split each axis at the median. Hover for the numbers, click to jump to it in the list.

1. 01
   ntppool.org Top 10K English

   pool.ntp.org: the internet cluster of ntp servers

   • GlobalSign
   • Google Search Console
   • Fastly
   • Fastmail
   • Google Workspace
   • Meta Business Suite

   0 say ntppool.org is a good alternative to NTP 0 say ntppool.org isn’t a real alternative to NTP

   Comment
   Very close cos 0.918
2. 02
   Syncthing syncthing.net Top 10K English

   Syncthing

   open source continuous file synchronization software

   • Bootstrap
   • cdnjs
   • Fastly
   • Font Awesome
   • GitHub Pages
   • Hetzner DNS

   0 say Syncthing is a good alternative to NTP 0 say Syncthing isn’t a real alternative to NTP

   Comment
   Close cos 0.884
3. 03
   Netnod netnod.se Top 10K English

   Start | Netnod

   internet exchange in Sweden

   • Apache HTTP Server
   • Drupal
   • Google Workspace
   • Mailchimp
   • Matomo
   • PHP

   0 say Netnod is a good alternative to NTP 0 say Netnod isn’t a real alternative to NTP

   Comment
   Close cos 0.881
4. 04
   int08h.com Top 10K English

   int08h

   • Google Analytics
   • Google Search Console
   • Fastly
   • Microsoft 365
   • Namecheap DNS

   0 say int08h.com is a good alternative to NTP 0 say int08h.com isn’t a real alternative to NTP

   Comment
   Close cos 0.882
5. 05
   National Institute of Standards and Technology nist.gov Top 1K English

   National Institute of Standards and Technology

   NIST promotes U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that enhance economic security and improve our quality of life.

   • Google Search Console
   • Atlassian
   • Bing Webmaster Tools
   • Cloudflare
   • Cloudflare Web Analytics
   • Drupal

   0 say National Institute of Standards and Technology is a good alternative to NTP 0 say National Institute of Standards and Technology isn’t a real alternative to NTP

   Comment
   Close cos 0.881
6. 06
   IETF ietf.org Top 1K English

   IETF | Internet Engineering Task Force

   The Internet Engineering Task Force (IETF) is the premier Internet standards body, developing open standards through open processes.

   • Google Search Console
   • Cloudflare
   • Cloudflare DNS
   • Google Workspace
   • Matomo

   0 say IETF is a good alternative to NTP 0 say IETF isn’t a real alternative to NTP

   Comment
   Close cos 0.870
7. 07
   FAST.com fast.com Top 1K

   Internet Speed Test | Fast.com

   How fast is your download speed? In seconds, FAST.com's simple Internet speed test will estimate your ISP speed.

   • Akamai Edge DNS
   • Amazon Web Services

   0 say FAST.com is a good alternative to NTP 0 say FAST.com isn’t a real alternative to NTP

   Comment
   Close cos 0.867
8. 08
   timeanddate.com Top 10K

   website with databases of time and time zones, calendars, holidays

   • GlobalSign
   • Google Search Console
   • Apple Business
   • Atlassian
   • Freshworks
   • Mailchimp

   0 say timeanddate.com is a good alternative to NTP 0 say timeanddate.com isn’t a real alternative to NTP

   Comment
   Close cos 0.865
9. 09
   curl curl.se Top 10K English

   curl

   command line tool and library for transferring data with URL syntax

   • Fastly
   • nginx

   0 say curl is a good alternative to NTP 0 say curl isn’t a real alternative to NTP

   Comment
   Close cos 0.862
10. 10
    NLnet Labs nlnetlabs.nl Top 10K English

    NLnet Labs - Home

    Research & Development, Internet architecture, DNS, Routing, Stability and Security.

    • Adobe Fonts
    • Bootstrap
    • Font Awesome
    • Google Workspace
    • jQuery
    • nginx

    0 say NLnet Labs is a good alternative to NTP 0 say NLnet Labs isn’t a real alternative to NTP

    Comment
    Close cos 0.863
11. 11
    squid-cache.org Top 10K

    squid : Optimising Web Delivery

    proxy server and web cache daemon

    • Apache HTTP Server
    • Google Search Console

    0 say squid-cache.org is a good alternative to NTP 0 say squid-cache.org isn’t a real alternative to NTP

    Comment
    Close cos 0.860
12. 12
    Wireshark wireshark.org Top 10K

    network traffic analyzer

    • Google Search Console
    • Amazon SES
    • Cloudflare DNS
    • Google Workspace
    • Mailchimp Transactional

    0 say Wireshark is a good alternative to NTP 0 say Wireshark isn’t a real alternative to NTP

    Comment
    Close cos 0.859
13. 13
    Tor Project torproject.org Top 10K English

    Tor Project | Anonymity Online

    Anonymity Online | Defend yourself against tracking and surveillance. Circumvent censorship.

    • Apache HTTP Server
    • Google Search Console
    • Bootstrap
    • Font Awesome
    • jQuery

    0 say Tor Project is a good alternative to NTP 0 say Tor Project isn’t a real alternative to NTP

    Comment
    Close cos 0.857
14. 14
    PTT Bulletin Board System ptt.cc Top 10K Chinese

    首頁 - 批踢踢實業坊

    bulletin board system based in Taiwan

    • Google Analytics
    • Google Search Console
    • Cloudflare
    • Cloudflare DNS
    • Cloudflare Web Analytics
    • Google Workspace

    0 say PTT Bulletin Board System is a good alternative to NTP 0 say PTT Bulletin Board System isn’t a real alternative to NTP

    Comment
    Close cos 0.857
15. 15
    RFC Editor rfc-editor.org Top 1K English

    RFC Editor

    The official home of RFCs. RFCs outline computer networking and Internet foundations, including Internet Standards and historical or informative content.

    • Google Search Console
    • Cloudflare
    • Cloudflare DNS
    • Google Workspace
    • Nuxt
    • Vue.js

    0 say RFC Editor is a good alternative to NTP 0 say RFC Editor isn’t a real alternative to NTP

    Comment
    Close cos 0.856
16. 16
    SSRN ssrn.com Top 10K

    Content Blocked

    online digital archive for electronic preprints of scientific papers and related content

    • Google Search Console
    • Adobe
    • Amazon SES
    • Atlassian
    • Cloudflare
    • Cloudflare Web Analytics

    0 say SSRN is a good alternative to NTP 0 say SSRN isn’t a real alternative to NTP

    Comment
    Close cos 0.857
17. 17
    Node.js nodejs.org Top 10K English

    Node.js — Run JavaScript Everywhere

    Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.

    • Google Search Console
    • Cloudflare
    • Cloudflare DNS
    • Google Workspace
    • Next.js
    • React

    0 say Node.js is a good alternative to NTP 0 say Node.js isn’t a real alternative to NTP

    Comment
    Close cos 0.856
18. 18
    doxygen.org Top 10K English

    Doxygen homepage

    Source code documentation and analysis tool

    • Bootstrap
    • Cloudflare
    • Cloudflare DNS
    • Cloudflare Web Analytics
    • Google AdSense

    0 say doxygen.org is a good alternative to NTP 0 say doxygen.org isn’t a real alternative to NTP

    Comment
    Close cos 0.856
19. 19
    NetBird netbird.io Top 10K English

    NetBird - Open Source Zero Trust Networking

    WireGuard®-based overlay network and Zero Trust Network Access in one platform for reliable and secure connectivity

    • Google Search Console
    • Brevo
    • Google Workspace
    • HubSpot
    • Microsoft 365
    • Next.js

    0 say NetBird is a good alternative to NTP 0 say NetBird isn’t a real alternative to NTP

    Comment
    Close cos 0.853
20. 20
    FreeTDS.org freetds.org Top 10K

    FreeTDS.org

    • Apache HTTP Server

    0 say FreeTDS.org is a good alternative to NTP 0 say FreeTDS.org isn’t a real alternative to NTP

    Comment
    Close cos 0.853

Ranked by score: the cosine similarity of each site’s vector to ntp.org’s, less a small penalty for generic sites that are close to everything. Highlighted technologies are ones NTP uses too. Votes and comments come from visitors and don’t change the ranking.

04 · Fingerprints

Technology

What NTP is built with, and what its closest competitors use, from its homepage’s code and its DNS records.