Open source, so you can read the code that exposes your localhost. zrok is an open source tool for sharing local services publicly or privately through ephemeral or reserved shares, built by NetFoundry. Its pricing page lists a Free plan at $0 a month with 5 GB of daily bandwidth, 25 environments, 50 share backends, 50 private access frontends and community support, and the page title says no credit card is required. It also says you can self-host for free and to talk to NetFoundry about scale, and it lists no paid price. A r/admincraft commenter said zrok is open source with a free SaaS that is more generous and capable than ngrok's, which is one person's view. A Hacker News post introduced it as a way to share a port from one machine to another, publicly or privately. I found no G2 or Capterra reviews. It suits developers who want a free tunnel and are fine reading the docs or running it themselves.
Free tier quotas
Plan
Free, $0 per month
Bandwidth
5 GB per day
Environments
25
Share backends
50, ephemeral or reserved
Private access frontends
50
Support
Community
Credit card
Not required, per the page title
Self-hosting
Free, per the pricing page
Last sniffed Oct 6, 2026. Always confirm on the official pricing page.
👍 Good boy
+The pricing page lists a Free plan at $0 a month with 25 environments, 50 share backends and 50 private access frontends.
+The page title says no credit card is required.
+The pricing page says you can self-host zrok for free.
+Shares can be ephemeral or reserved, so you can pick a throwaway link or a reserved name.
+A r/admincraft commenter said zrok is open source and has a free SaaS that is more generous and capable than ngrok's. That is one person's view.
+A Hacker News post describes zrok as private or public, instant and secure tunneling of applications from anywhere.
👎 Watch out
−The free plan caps bandwidth at 5 GB per day.
−The pricing page lists only the Free plan. Scaling is described as 'talk to us', with no price shown.
−Public review coverage is thin. I found no G2 or Capterra reviews, only Reddit and Hacker News excerpts.
−Self-hosting is free, which also means you run the servers yourself.
−Community support is the only support listed on the Free plan.
The catch
The Free plan gives 5 GB of daily bandwidth, 25 environments, 50 share backends and 50 private access frontends, with community support. The pricing page lists no paid plan. It says to talk to NetFoundry about scale, so you cannot see what a larger deployment costs before you ask.
Self-hosting is free according to the pricing page. That makes zrok a fallback if the hosted free tier stops fitting, but you take on running and securing the servers.
Public opinion data is thin. I found no G2 or Capterra reviews. The comparison with ngrok comes from a single r/admincraft comment, and the other mentions are launch posts. Treat the claim that zrok's free SaaS is more generous than ngrok's as one person's view, and compare the two pricing pages yourself.
I did not find a commercial-use statement, so that field is marked unknown.
What’s included
✓Public shares
✓Private shares
✓Ephemeral and reserved shares
✓Private access frontends
✓Environments for each machine
✓Open source
✓Self-hosting
✓Community support
Free tier value
Generosity
A
Estimated value
$0 with 5 GB per day
Feature parity
Free tier: 5 GB per day. Single plan listed, scale pricing on request.
Screenshots
HomepagePricing page
Paid plans
Self-hosted, free
The pricing page says you can self-host zrok for free.
Scale, contact NetFoundry
The page says to talk to them about scale. No price is listed.
Common questions
Is zrok free?
Yes. The Free plan is $0 a month with 5 GB of daily bandwidth, 25 environments and 50 share backends.
Do I need a credit card?
The pricing page title says no credit card is required.
Is zrok open source?
Yes. Hacker News and Reddit post titles describe it as open source, and the pricing page offers free self-hosting.
Who makes it?
NetFoundry. The pricing page site name is 'zrok by NetFoundry'.
How does it compare with ngrok?
One r/admincraft commenter said zrok has a free SaaS that is more generous and capable than ngrok's. Compare the pricing pages before you rely on that.
What does it cost at scale?
No price is listed. The page says to talk to NetFoundry.
Change history
Checked October 22, 2026
The pricing page lists a Free plan with 5 GB of daily bandwidth, 25 environments and 50 share backends.
