Free ngrok alternatives

The best ngrok alternatives for local development in 2026

Need a public HTTPS URL for localhost right now? This comparison covers the tools that actually solve that job: Nouva, ngrok, Cloudflare Quick Tunnels, Tailscale Funnel, Serveo, Pinggy, and localhost.run.

Nouva Team 12 min read

If you are searching for a free ngrok alternative or a Serveo alternative, the tunnel itself is probably not the hard part. The friction appears around it: installing another agent, registering a key, losing a useful URL on reconnect, dismissing a warning page, or discovering that the webhook body you needed was truncated.

We built Nouva Ephemeral Tunnels around the shortest credible path from a local port to a useful public URL. It uses OpenSSH remote forwarding — the same -R mechanism documented in the OpenSSH manual — then adds browser authorization, HTTPS routing, fair-use controls, and a cloud inspector.

The quick answer

Choose the tunnel that matches the job

Use Nouva when you want an HTTPS tunnel for webhooks or previews, a memorable free alias, no proprietary client, no browser warning, and cloud request replay. Pick ngrok for its mature policy ecosystem, Cloudflare for a throwaway URL on its edge, Tailscale if your machine is already in a tailnet, or Pinggy when broader protocols matter more than a stable free name.

No Nouva client to install
$ ssh -R 0:localhost:3003 tunnel@ssh.nouva.cloud
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Side-by-side

Free localhost tunnels compared

Checked against each provider's official documentation on July 20, 2026. Limits and product terms can change, so every competitor name links to its source.

Nouva

Setup
Stock OpenSSH + GitHub browser approval
Free hostname
Generated URL or chosen *.nouva.cloud alias
Browser warning
None
Inspection
7-day encrypted capture, reveal, and live replay
Best for
HTTP webhooks and previews with no tunnel client

ngrok Free

Setup
Install agent, create account, save authtoken
Free hostname
One assigned development domain
Browser warning
Yes, for browser traffic
Inspection
24-hour retention; full capture truncates at 10 KB
Best for
A mature tunnel ecosystem and traffic policies

Cloudflare Quick Tunnels

Setup
Install cloudflared; no account needed
Free hostname
Random *.trycloudflare.com URL
Browser warning
None documented
Inspection
Logs, but no comparable built-in edit/replay workflow
Best for
A disposable URL on Cloudflare's edge

Tailscale Funnel

Setup
Install Tailscale and configure a tailnet
Free hostname
Device name under the tailnet's *.ts.net domain
Browser warning
None
Inspection
No comparable built-in payload inspector documented
Best for
Developers already running Tailscale

Serveo Free

Setup
Stock OpenSSH; no registration
Free hostname
Chosen Serveo subdomain
Browser warning
Yes
Inspection
No cloud request replay advertised
Best for
The classic anonymous SSH tunnel flow

Pinggy Free

Setup
Stock OpenSSH; optional account/token
Free hostname
Random Pinggy-owned URL
Browser warning
Yes, once per browser
Inspection
Request/response inspection and replay
Best for
SSH-first multi-protocol tunnels

localhost.run Free

Setup
Stock OpenSSH; no signup
Free hostname
Changing localhost.run domain
Browser warning
Not documented
Inspection
No cloud request replay advertised
Best for
The fewest possible steps for a throwaway URL

Why Nouva is different

A localhost tunnel that starts where the debugging begins

Nouva is intentionally narrower than a general-purpose edge network. It does HTTP, WebSockets, and Server-Sent Events for temporary development work. That focus lets us make the common webhook loop unusually simple.

  • No Nouva binary, token paste, or SSH key registration

    Run stock OpenSSH, open the one-use link printed in your terminal, approve with your GitHub-authenticated Nouva session, and keep working.

  • A free alias you can actually remember

    Ask for an available alias such as my-webhook.nouva.cloud. It exists only while SSH is connected, with a 24-hour same-user reclaim window after disconnect.

  • Seven days of encrypted inspection

    Metadata is retained by default. Opt into creator-only body capture, reveal masked secrets with an audit trail, and replay complete requests while the session is live.

  • No browser interstitial in front of your app

    Human previews and browser-based callbacks reach your service directly. That also means the URL is public, so expose only development services you intend to share.

Choose your alias
$ ssh -R my-webhook:80:localhost:3003 tunnel@ssh.nouva.cloud

One SSH connection can include up to five -R entries for separate local ports. Generated names use -R 0:localhost:PORT; chosen aliases use -R alias:80:localhost:PORT.

The established options

Where each alternative earns its place

ngrok: the mature all-rounder

ngrok remains the benchmark for a reason. Its agent, traffic policies, protocol support, SDKs, and operational tooling cover far more than a temporary HTTP callback. If you need that ecosystem, ngrok may be the right answer.

The tradeoff is free-tier friction. The current ngrok Free limits are three online endpoints, one assigned development domain, 1 GB of outbound data per month, and 20,000 HTTP requests per month. Browser traffic receives an interstitial. Its cloud Traffic Inspector retains free traffic for 24 hours, and full capture truncates after 10 KB.

Nouva's comparison is specific: five forwards, a chosen free alias, 25 GiB over a rolling 30 days, 250,000 requests over 30 days, no interstitial, and seven-day encrypted capture up to 64 KiB per request and response body. ngrok still wins when you need broader protocols, production edge features, or a mature commercial platform.

Cloudflare Quick Tunnels: excellent edge, random developer URL

Cloudflare Quick Tunnels are compelling when you already trust Cloudflare's network and do not care what the URL looks like. Install cloudflared, run one command, and receive a random trycloudflare.com hostname without adding a DNS zone.

Cloudflare's Quick Tunnel documentation calls the feature testing-only, offers no SLA, caps it at 200 in-flight requests, and does not support SSE. Stable named tunnels are powerful, but they are a different workflow: account, domain, DNS, and tunnel configuration. The official Quick Tunnel docs do not describe a body-capture and edit/replay workflow comparable to Nouva or ngrok.

Tailscale Funnel: best when Tailscale is already part of your stack

Funnel is a natural extension of a tailnet. It terminates TLS on your node and can proxy HTTPS or TCP without giving the relay plaintext access. For teams already using Tailscale, that architecture can matter more than tunnel setup speed.

Starting from zero is more involved. The Funnel requirements include the Tailscale CLI, a tailnet, MagicDNS, HTTPS, and a funnel node attribute. Public names live under the tailnet's ts.net domain, listening is limited to ports 443, 8443, and 10000, and bandwidth limits are non-configurable. There is no comparable built-in payload inspector or replay workflow documented.

Serveo, Pinggy, and localhost.run: the SSH-first family

Nouva is not the first service to notice that OpenSSH already ships a very good tunnel client. These are the closest comparisons when “do not make me install another binary” is the requirement.

  • Serveo offers three free active tunnels and chosen subdomains with no registration. Its free plan documents an interstitial warning; the paid plan removes it.
  • Pinggy supports HTTP, TCP, UDP, and TLS through an SSH-first flow and includes inspection and replay. Free sessions use random URLs, stop after 60 minutes, and show browser visitors a one-time screening page. Persistent names are a Pro feature.
  • localhost.run requires neither a download nor signup for a short-lived tunnel. Its free domains change regularly and have a speed limit; stable custom-domain plans are separate.

If you need arbitrary TCP or UDP, Pinggy is a better fit than Nouva v1. If you need anonymous access with no account at all, Serveo or localhost.run removes even the browser approval. Nouva's advantage is the combination of attributable GitHub authorization, a chosen free alias, no browser warning, longer-lived SSH sessions, published quotas, and encrypted cloud inspection.

The actual job

Test a webhook on localhost in four steps

  1. 01

    Run your local receiver

    Start the API or framework route that should receive the callback, for example on localhost:3003.

  2. 02

    Start the SSH reverse tunnel

    Use a generated URL or request a memorable alias. Your terminal prints a one-use authorization link.

  3. 03

    Approve with GitHub

    Choose the Nouva workspace for the session. The waiting SSH connection continues automatically.

  4. 04

    Send, inspect, replay

    Paste the HTTPS URL into the webhook provider. Enable capture when you need to inspect or replay a complete request.

Honest constraints

When Nouva is the wrong choice

A comparison is only useful if it helps you rule tools out. Choose something else when these constraints conflict with your job.

  • You need raw TCP, UDP, local HTTPS, TLS passthrough, or a bring-your-own domain.
  • You need private access rather than a public URL anyone can open.
  • You need a production endpoint, SLA, permanent alias ownership, or unlimited traffic.
  • You cannot authorize the session with a GitHub-authenticated Nouva account.

Nouva's published free limits

5

live forwards per workspace

25 GiB

transfer per rolling 30 days

250,000

requests per rolling 30 days

7 days

inspector retention

At a rolling quota, the SSH session stays connected while new requests receive 429. There is no paid tunnel tier or manual quota upgrade. Read the complete fair-use policy.

Bottom line

Which ngrok alternative should you choose?

  • Choose Nouva for a no-client HTTP tunnel, chosen free alias, no interstitial, and encrypted replay.
  • Choose ngrok for the deepest commercial ecosystem, traffic policies, and broader production use.
  • Choose Cloudflare for a random Quick Tunnel or a fully configured edge tunnel on your own domain.
  • Choose Tailscale Funnel when Tailscale is already installed and tailnet-native routing is the point.
  • Choose Serveo or localhost.run for anonymous, stock-SSH tunneling with the fewest account steps.
  • Choose Pinggy for stock-SSH access to HTTP, TCP, UDP, and TLS plus a capable debugger.

FAQ

Questions developers ask about localhost tunnels

Is there a genuinely free alternative to ngrok?+

Yes. Nouva, Cloudflare Quick Tunnels, Serveo, Pinggy, and localhost.run all offer free development tunnels with different limits. Nouva is free under one published fair-use policy and does not sell an upgrade tier.

How can I expose localhost without installing another client?+

Use a service built on SSH remote forwarding. Nouva, Serveo, Pinggy, and localhost.run work with stock OpenSSH. Nouva authenticates the SSH session through a one-use GitHub browser approval instead of asking you to install a client or paste a token.

Can I choose a free custom subdomain for localhost?+

Nouva lets you request an available 3–40 character alias such as my-webhook.nouva.cloud for the lifetime of the SSH connection. It is an ephemeral Nouva alias, not a bring-your-own custom domain or permanent reservation.

What is the best tunnel for testing webhooks locally?+

Choose a tunnel with public HTTPS, no browser interstitial for callbacks, request inspection, and replay. Nouva is designed around that workflow: it forwards HTTP, WebSockets, and SSE, stores metadata for seven days, and can capture and replay complete requests while the SSH session is live.

Does Nouva support WebSockets and Server-Sent Events?+

Yes. Nouva supports HTTP, WebSockets, and Server-Sent Events. WebSocket frames are not captured in v1; the inspector retains handshake metadata only.

Can one SSH connection expose multiple local ports?+

Yes. One Nouva SSH connection can carry up to five remote forwards, so a frontend, API, webhook receiver, and supporting services can share one authenticated session.

What happens to a Nouva URL when SSH disconnects?+

Public routing disappears immediately. A chosen alias enters a 24-hour quarantine where only the same GitHub user may reclaim it; after that it becomes available to someone else.

Does Nouva work on macOS, Linux, and Windows?+

Yes, with the stock OpenSSH client available on the machine. Nouva tests its SSH flow against OpenSSH on macOS, Linux, and Windows.

Does Nouva tunnel SSH work over IPv4 and IPv6?+

Yes. ssh.nouva.cloud publishes both IPv4 and IPv6 routes on standard SSH port 22, and the resulting HTTPS tunnel URL is also available over IPv4 and IPv6.

Are Nouva tunnels private?+

No. Anyone with the URL can reach the exposed local service. Nouva tunnels are temporary development infrastructure, not private networking or production hosting.

Your next webhook can hit localhost in under two minutes.

Use the SSH client you already have. Choose an alias, approve the connection, and close SSH when the test is over.

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