runsonwhat

Harmonic's tech stack

What does Harmonic use?

Harmonic (harmonic.fun) uses at least 14 tools we can see from public records, including Google Workspace for email and documents, Ashby for hiring and HR and SendGrid for email delivery. Last checked .

Industry
Software
Size
1–10 employees
Based in
Palo Alto, United States
Founded
2023
LinkedIn
Company page
Re-check liveVisit harmonic.fun
Tools found
14
Categories
9
Layers
4 of 5
Changes seen
2

Harmonic's stack, layer by layer

Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.

Edge & Hosting

1 tool, where the bytes are served from

DNS

Application

3 tools, what the product is built with

Frontend

Go-to-market

1 tool, how they find and keep customers

Marketing

Company Ops

9 tools, what the team runs on day to day

Email Delivery

Workspace

Collaboration

Dev Tools

People & HR

Finance & Legal

What changed at Harmonic

Recent starts and stops

  1. StoppedThree.js
  2. Stoppedllms.txt

Hiring at Harmonic

9 open roles on Harmonic's public Ashby job board.

Open roles by team

  1. Engineering8
  2. Data & AI1

Latest openings

  1. Research Engineer, Formal MethodsPalo Alto · Aug 2026
  2. Formal Verification EngineerPalo Alto · Aug 2026
  3. Software Engineer, ProductPalo Alto · Aug 2026
  4. Software Engineer, ML SystemsPalo Alto · May 2026
  5. Research Engineer, Training & InferencePalo Alto · May 2026
  6. Software Engineer, InfrastructureLondon · May 2026

All openings on Ashby →

Checked October 6, 2026.

Companies like Harmonic also use

Tools common among companies with a similar stack that we haven't found at Harmonic.

Companies with a stack like Harmonic's

Ranked by shared tools, with rare tools counting more.

Harmonic tech stack FAQ

What tools does Harmonic use?

We've found 14 tools at Harmonic (harmonic.fun). Edge & Hosting: GoDaddy. Application: React, Tailwind CSS and Next.js. Company Ops: Google Workspace, SendGrid and Slack. Last checked October 7, 2026.

What email provider does Harmonic use?

Harmonic uses Google Workspace for email and documents. We found Google Workspace through email records and website code.

What does Harmonic use for hiring and HR?

Harmonic uses Ashby for hiring and HR. We found Ashby through website code.

Does Harmonic use Google Workspace?

Yes. We found Google Workspace at Harmonic through email records and website code. Google Workspace is used by 392,385 companies we track.

Has Harmonic changed tools recently?

Yes. On our rechecks, Harmonic stopped using Three.js and llms.txt (latest October 7, 2026).

How does runsonwhat know what Harmonic uses?

We read public traces only: Harmonic's DNS and email records, certificate logs, the code its website loads, and published subprocessor lists. A tool is listed only when a direct record backs it up. DNS is rechecked weekly and the website monthly.

We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.