TunnelPro is a small program you run on your own computer. It takes something running only on your machine — a website you're building, an app's back-end, a Remote Desktop connection, or just a folder of files — and gives it a real link on the internet that anyone you choose can open. It does this without an account, without a monthly bill, and without the usual catch that the link keeps breaking.
Tools that expose your computer to the internet (the best-known is a paid service called ngrok) usually rely on one single service in the background — so when that service is busy, rate-limits you, or changes your link, you're stuck. TunnelPro keeps a stable of several free services and treats them as a team: if one drops, it instantly switches to the next and fights to keep the same web address you started with.
Keeps five free tunnel services on standby. If the one you're using dies, it silently hands you to the next one — you stay online.
When a link drops, it hammers away up to 12 times to win back the exact same address, so bookmarks and webhooks don't break.
Installs as a background service that survives reboots, reconnects on its own, and reports live status on a local dashboard plus Microsoft Teams alerts.
When TunnelPro is running, it serves a control panel in your browser at 127.0.0.1:4040 — a private page only you can see. This is a faithful recreation of that screen, rebuilt from the dashboard's own code. You spawn tunnels on the left, watch live traffic and status in the middle, and read a rolling activity log on the right.
Illustrative snapshot — the numbers are sample data, not a live capture. Colors matched to the real app: background #000000, glass panels rgba(20,20,22,.65), cyan accent #00e5ff, mint "live" #a3e4d7, amber "reconnecting" #ffb347, red #ff4d4d. The theme is named "Neon Glassmorphism" in the stylesheet.
Pick a provider, type a port and a desired address, hit Initialize. Separate panels offer a Cloudflare "named" tunnel and a one-click Remote-Desktop tunnel.
Four at-a-glance tiles: uptime, active connections, and whether the LocalTunnel and Cloudflare back-ends are reachable.
A dial tracking requests against Cloudflare's free-tier ceiling of 100,000/day, broken down by type (pages, API, streaming, files, WebSocket, static) with bandwidth in and out.
One card per live tunnel: its name, colored status badge, current public URL, the port and provider behind it, and Stop / Reclaim buttons.
Mint = Live, amber = Reconnecting, red = Error/Stopped — the same green/amber/red language used throughout the app.
A live terminal streaming each connect, disconnect, failover, and incoming request, with local traffic and public traffic colored differently.
Your home computer sits behind your router, which is like an apartment building with no listed address for individual flats — the wider internet can't knock on your door directly. A tunnel fixes that: a helper server out on the internet gets a public address, and your computer keeps a private line open to it. Anyone who visits the public address is quietly forwarded down that line to your machine. TunnelPro doesn't reinvent this; it orchestrates the free services that already offer it.
Every free tunnel service is flaky in its own way: localtunnel can refuse your chosen name, serveo is often offline, Cloudflare hands you a new random address each time. Depend on just one and your link dies with it.
Keep several on the bench and switch between them automatically. TunnelPro wraps six back-ends behind one command and one dashboard, and picks whichever one actually works right now.
| Provider | Handles | Free service behind it | Public link looks like |
|---|---|---|---|
| localtunnel | web, files | localtunnel.me | name.loca.lt |
| localhost.run | web, files | localhost.run (over SSH) | xxxx.lhr.life |
| serveo | web, TCP, files | serveo.net (over SSH) | name.serveo.net |
| cloudflared | web, TCP, UDP, files | Cloudflare quick tunnel | random.trycloudflare.com |
| bore | TCP | bore.pub | bore.pub:41027 |
| cloudflared-named | web, TCP, UDP | Cloudflare named tunnel needs setup | your-own-domain.com |
"Web" = HTTP (websites and APIs). "TCP" = raw connections like SSH or Remote Desktop. "UDP" = fast datagram traffic (games, some streaming). "Files" = serving a folder as a public website. The list of default services to try, and their order, is set per connection type in the config file.
Point it at a folder with --type file and TunnelPro spins up its own tiny web server for that folder, then tunnels it — with basic protection against visitors escaping the folder.
Expose SSH so you can log into your home machine, a database port, or Remote Desktop — TunnelPro routes each through whichever provider supports that traffic type.
Every connect, drop, and recovery is written to a log, shown on the dashboard, and — if you add a webhook — pushed to a Microsoft Teams channel.
This is the genuinely clever, genuinely built part of TunnelPro — the logic that watches a live tunnel and refuses to let it stay down. It's a small state machine that reconnects patiently, checks its own pulse, and fights to win back your address. Everything below is real code we read line-by-line.
When a tunnel drops, TunnelPro doesn't hammer the service instantly. It waits a moment, then a little longer each time — 1.5s, then ~2.3s, ~3.4s, ~5s… up to a 10-second ceiling — with a dash of randomness so many tunnels don't all retry in lockstep. By default it never gives up.
While live, it quietly pokes the tunnel every 30 seconds. For most providers that's a real "is this URL still answering?" web request; if the answer is no, it tears the tunnel down and rebuilds it before you even notice.
Lost your preferred address to someone else? Hit Reclaim and TunnelPro relaunches up to 12 times, every 5 seconds, and only accepts a result if the link genuinely contains the name you asked for. This is what keeps webhook URLs and bookmarks alive.
For Cloudflare tunnels it slips a tiny counter in front of your app that tallies every request and every byte — even live WebSocket streams — and buckets them by type. It resets at midnight and keeps 30 days of history.
The code means to try last time's winning service first on reconnect, but a mix-up means it saves the first service in the list instead of the one that actually worked. In practice the preference is a no-op. A small, fixable bug.
That counter is only inserted when Cloudflare is the active provider — but the default order tries localtunnel first and it usually succeeds, so for most users the gauge sits near zero. It's real, just rarely wired in.
A bundled feature can share whole drives over the network — but it starts with no authentication. Handy on a trusted LAN; risky if ever exposed through a tunnel. Worth locking down before relying on it.
There's code to publish a Cloudflare Worker for a permanent link, but it needs a config file that isn't shipped, so today it quietly does nothing — and the Worker it would deploy just redirects to the temporary link anyway. A roadmap idea, not a live feature.
If you've ever tried to show someone a website running on your laptop, test a payment webhook, or reach your home PC from the road, you've hit at least one of these walls. Here's the pain on the left, and how TunnelPro answers it on the right.
ngrok's free plan caps you at ~20,000 requests a month, throttles you, hides secure links behind a paid tier, and stamps a warning page in front of every site you share.
Completely free, no request cap, no interstitial warning page. The link you share opens straight onto your app.
Free tunnel tools are individually unreliable — the server's busy, the service is down for maintenance, or it simply refuses your request. Your demo dies mid-sentence.
Five free services on standby. The moment one fails, it switches to the next automatically. Your visitor never sees the hand-off.
Every reconnect hands you a brand-new random web address — so the webhook you registered with Stripe or GitHub, and the link you texted a client, both silently break.
It fights to reclaim the same address every time — up to 12 tries — so your registered URLs and shared links keep working.
Most tunnels run in a terminal you have to keep open. Close the lid or reboot and everything's gone; you're back to copy-pasting commands.
Installs as a background service that starts on boot, restarts itself if it crashes, and reconnects on its own. Set it once and forget it.
You have no idea whether your tunnel is actually up, which service is carrying it, or how much traffic it's getting — until something's already broken.
A local dashboard shows every tunnel's live status and history, a meter tracks traffic, and optional Microsoft Teams alerts ping you on every connect, drop, and recovery.
Just to share a quick demo you're asked to make an account, verify an email, sometimes add a credit card — friction you don't want for a five-minute link.
Runs entirely on your machine. No account, no sign-up, no card. Nothing about you leaves your computer to get a link.
You need to share more than a web page — log into your home PC over SSH, reach a database, or hand someone a folder of files — and most free tools only do HTTP.
Handles web, raw TCP (SSH, databases, Remote Desktop) and folder-as-a-website, each routed through whichever back-end supports it.
Cloudflare's free stable domain is great — but only if you already own a domain and move its DNS to Cloudflare. Not an option for a student or hobbyist.
Gives you a stable-enough free subdomain with zero domain ownership, and can still graduate to a Cloudflare custom domain later if you get one.
TunnelPro's own notes tell a bigger story than the code delivers — an "enterprise Zero-Trust" saga, an "HFT / Binance" speed claim, a "permanent edge URL." That's normal for an ambitious solo project, but a thesis is only worth reading if it's straight with you. So here's the honest line between the working product and the aspiration, taken directly from the source.
| Capability | Status | What's actually there |
|---|---|---|
| Multi-provider failover | Built | Tries services in order, moves to the next on failure. Works. |
| Reconnect with backoff + jitter | Built | ×1.5 backoff, 1s→10s cap, random jitter, retries forever. |
| Health checks + self-heal | Built | Real 30-second probes for most providers; rebuilds on failure. |
| Same-address reclaim (12× / 5s) | Built | Verifies the granted link before accepting it. |
| Local web dashboard + Teams alerts | Built | Live status, history, one-click controls; optional Teams webhook. |
| Folder-as-website, multi-protocol | Built | Own static server with path-traversal guard; HTTP/TCP/file. |
| Traffic meter (requests + bandwidth) | Partial | A real proxy — but only inserted for Cloudflare tunnels, so usually idle. |
| "Remembers best provider" on reconnect | Partial | Intended, but a bug saves the wrong provider; effectively a no-op. |
| WebDAV drive sharing | Partial | Works, Windows-only, and ships with no authentication. |
| Cloudflare "named / enterprise" tunnel | ~50% | Real launcher, but hardcodes one tunnel name and needs full manual Cloudflare setup. |
| "Permanent edge URL" (Cloudflare Worker) | Stub | Inactive without a config file that isn't shipped; the Worker only redirects to the temporary link. |
| "HFT / Binance sub-100ms, 33 MB/s" | Label | One-line socket tweak with a big name; no market-data code, numbers never measured. |
| "Enterprise Zero-Trust / Azure AD / RDP-from-anywhere" | Story | A narrative about manual dashboard clicks; essentially no code in the app. |
The code flips a couple of standard networking switches (disable packet-batching, keep connections warm, enlarge buffers). Useful, but these are one-liners every app can set — not high-frequency trading. There's no trading or market-data code, and the "sub-100ms / 33 MB/s" figures are asserted, never tested. And traffic through a public tunnel can't be that fast anyway.
A vivid story in the project log about securing Remote Desktop with Cloudflare's Zero-Trust and diagnosing Windows login errors. But that was done by hand in Cloudflare's website — the app itself contains none of it. The only trace in code is a single line that picks a tunnel name when an address starts with "rdp."
There's a hook meant to publish a Cloudflare Worker and hand you a forever-link. It needs a settings file that isn't included, so it silently does nothing. Even if switched on, the Worker just bounces visitors to the current temporary link — so it wouldn't be "permanent" in any real sense.
"Localhost tunneling" sits inside several big, fast-growing markets — developer tools, API management, and secure remote access. The tools themselves split cleanly in two: polished paid gateways (ngrok, Cloudflare, Tailscale) that are reliable but gate the good parts behind an account or a bill, and many free back-ends (localtunnel, serveo, bore…) that are individually flaky and one-shot. Nobody combines free + automatic failover + always-on. That's the gap.
Sources: SlashData developer population 2025; Precedence Research (API management); The Business Research Company (secure remote access); KuppingerCole (ZTNA). Figures are the latest published estimates; markets overlap and are not additive.
| Product | Free tier | Paid (USD) | The catch |
|---|---|---|---|
| TunnelPro | Everything, free | — | Solo project; loud labels overstate parts of it |
| ngrok | 1 domain, ~20k req/mo, 1GB/mo, TLS off, warning page | Hobbyist ~$8/mo · PAYG ~$20/mo+usage | Free tier is deliberately limited; custom domains cost |
| Cloudflare Tunnel | Tunnel free & unlimited | Zero-Trust free ≤50 users, then ~$7/user/mo | Needs a Cloudflare account + a domain you host there |
| Tailscale Funnel | Free on Personal (≤6 users) | $8–18/user/mo | Only ports 443/8443/10000, only *.ts.net, needs the client |
| Pinggy | Free, 60-minute tunnel timeout | Pro ~$3–10/seat/mo | Persistent URLs need paid; hosted, not self-run |
| MS Dev Tunnels | Free within limits | — | Requires a Microsoft/GitHub account; IDE-centric |
| zrok / OpenZiti | 5 GB/day hosted; self-host unlimited | Custom (enterprise) | Single back-end; more setup |
| localtunnel / serveo / bore | Free, no account | — | Individually unreliable, one-shot, no dashboard |
ngrok pricing & free-plan limits (ngrok.com); Cloudflare plans; Tailscale pricing; Pinggy pricing (varies by source, $3/seat/mo–$10/mo); Microsoft Learn; zrok.io. Prices current as of July 2026 and subject to change.
| Capability | ngrok | Cloudflare | Tailscale | free CLIs | TunnelPro |
|---|---|---|---|---|---|
| Automatic multi-provider failover | ✕ | ✕ | ✕ | ✕ | ✓ |
| Free stable / reclaimed address | ◐ | ◐ | ◐ | ✕ | ✓ |
| Self-hosted, no account | ✕ | ✕ | ✕ | ◐ | ✓ |
| Built-in 24/7 service + auto-reconnect | ◐ | ◐ | ✓ | ✕ | ✓ |
| Bundled local dashboard | ◐ | ✕ | ✕ | ✕ | ✓ |
| Chat / Microsoft Teams alerts | ✕ | ✕ | ✕ | ✕ | ✓ |
✓ yes · ◐ partial or conditional · ✕ no. "Free CLIs" = localtunnel, serveo, bore, localhost.run. Every competitor is a single back-end; TunnelPro's differentiator is treating several as one redundant pool.
Each of these is tied to something a real competitor doesn't do. None of them lean on the overstated labels — they stand on the parts that genuinely ship.
ngrok, Cloudflare, Tailscale, localtunnel, serveo, bore — every one is a single provider. TunnelPro turns several individually-unreliable free services into one reliable pipe. No mainstream competitor does this.
ngrok's free tier caps requests and bandwidth, withholds secure endpoints, and stamps a warning page on your site. TunnelPro reclaims the same address and shows visitors your app directly, for free.
ngrok, Cloudflare Tunnel, Tailscale and MS Dev Tunnels all require an account (Cloudflare also wants your DNS). TunnelPro runs on your machine with none of that.
Most free tools are one-shot terminal commands. TunnelPro is built to run 24/7 as a service with auto-reconnect — the right shape for webhooks, homelab and IoT that must stay reachable.
Cloudflare and Tailscale dashboards live in their cloud; free CLIs have none. TunnelPro ships a local dashboard plus Teams alerts — no competitor bundles chat alerting.
SSH, Remote Desktop, databases, and folder-as-a-website, versus Tailscale Funnel's three-port limit and the HTTP-only free tools.
$0 vs ngrok's ~$96–240/yr, Cloudflare Zero-Trust's ~$84/user/yr, and Tailscale's ~$96–216/user/yr — with room for an optional lifetime tier none of them offer.
Open, self-hosted, and — as this thesis shows — willing to label what's real vs roadmap. For a trust-sensitive tool that routes your traffic, transparency is itself a feature.
The winning shape here is free-first: give away the resilient self-hosted core to win trust and distribution, then charge a small amount for the conveniences that need a server behind them — a guaranteed stable domain, a managed relay, team features. This undercuts every paid competitor while monetizing the users who'd otherwise churn to ngrok.
Priced out by ngrok's caps and warning page; want a free stable link.
Need an always-on tunnel that survives reboots and provider outages.
Stripe/GitHub/Twilio callbacks need a stable URL and no request cap.
Client-facing links that don't die mid-demo or show someone else's brand.
Pro and Lifetime undercut ngrok Hobbyist and Pro; Team sits below Tailscale and ngrok's paid tiers while bundling ops features they gate. A lifetime option is a clear differentiator — none of ngrok, Cloudflare, or Tailscale offer one.
| Scenario | Active users | Paid conversion | Blended price | Illustrative ARR |
|---|---|---|---|---|
| Early traction | 25,000 | 2% | ~$50/yr | ~$25,000 |
| Growing | 100,000 | 3% | ~$55/yr | ~$165,000 |
| At scale | 250,000 | 4% | ~$60/yr | ~$600,000 |
Illustrative — assumptions stated, not a forecast. Figures are simple arithmetic on hypothetical user and conversion numbers to show the shape of the model, not a prediction. Actual results depend entirely on adoption, retention, and infrastructure cost (a managed relay adds real hosting expense that isn't modeled here).
Lead with the failover-and-reclaim story where these users live — GitHub, Hacker News, r/selfhosted, dev communities burned by ngrok's limits. The free core is the whole funnel.
Free users who need a guaranteed stable or custom domain — webhook and demo users especially — upgrade to Pro for the managed relay that removes the last bit of flakiness.
Shared dashboards, SSO, and richer alert routing (Slack, PagerDuty on top of Teams) move an individual account into a per-seat Team plan.
Before selling "enterprise," ship the roadmap items honestly: real named-tunnel automation, authenticated WebDAV, a genuine permanent-URL proxy. Credibility is the product here.