The easiest network monitor and firewall for Mac
See all network connections — block any app from going online
Powerful privacy for your Mac, usable by anyone
Radio Silence lets you keep a list of apps that aren’t allowed to make network connections.
- Protect your privacy
- Prevent apps from phoning home
- Save on bandwidth and data charges
Radio Silence is completely invisible
The firewall is invisible and always active. You don’t have to keep any windows open.
- No annoying pop-ups
- No clutter on your screen or dock
- No effect on your Mac’s performance
Download free trialBuy now for only $9
Safe 30-day guarantee: If you’re not 100% happy, you get your money back. No questions asked.
Works with macOS 10.10 and newer, including Catalina.
“Quintessential Mac” is a perfect description of Radio Silence.
It is perhaps the easiest firewall I’ve ever used.
Did you know that when Photoshop launches, up to 7 different processes connect online?
See exactly what’s going on
Radio Silence’s network monitor shows you every network connection in real time.
If you find a misbehaving app, you can block it with a single click.
Radio Silence exposes everything
Find the hidden helpers and background processes apps use to make connections:
- Helper apps and executables
- In-memory processes
- Daemons, XPC services, and more
Download free trialBuy now for only $9
Safe 30-day guarantee: If you’re not 100% happy, you get your money back. No questions asked.
Works with macOS 10.10 and newer, including Catalina.
A lot of apps secretly check in with the mothership behind the scenes without asking your permission. If you’d prefer they didn’t, Radio Silence can solve your problem hassle-free.
People like Radio Silence because it solves their problems better, faster and cheaper
Do other firewalls get fan mail?
Radio Silence takes care of all the tricky network details for you
Radio Silence is built on years of real-world experience and customer feedback.
Instead of making you twiddle with settings, it simply does the right thing.
- Child processes of blocked apps are automatically blocked too
- Blocked apps can’t access the network, but can still talk to local processes
- …and many more things you thankfully never have to think about
Download free trialBuy now for only $9
Safe 30-day guarantee: If you’re not 100% happy, you get your money back. No questions asked.
Works with macOS 10.10 and newer, including Catalina.
A hassle-free, and cheaper, alternative to its cousin Little Snitch.
Radio Silence 2.3
Old versions
Radio Silence is a Mac program that enables you to monitor your network activity and prevent unneeded applications from connecting to the Internet. This utility might prove to be of good use when traveling as it helps you make sure you don’t overtake the limit that’s being established in your contract with the Internet provider.
The application features a very intuitive interface that gives you access to two panels: Firewall and Network Monitor. In the first screen, you can manage the program you wish to prevent from accessing the Internet. The utility enables you to add and remove as many items as you need and immediately applies the necessary changes. The next window displays the apps that are making network connections on your Mac.
In my testing, I used Radio Silence to block Firefox from making a network connection. The program quickly applied the needed changes, without slowing down my Mac in the process. What’s more, the information from the Network Monitor window was accurate.
The only thing I’d add to this application would be an option to sort the items from the Firewall and Network Monitor windows. For instance, it might prove to be of good use to see the items from the lists in alphabetical order.
In conclusion, Radio Silence proves to be a reliable solution when it comes to monitoring and blocking Internet usage on your Mac.
Radio Silence 2.3 – Outbound application firewall ( Little Snitch! Alternative )
Radio Silence is an outbound application firewall that lets you block Internet access from individual apps.
- 100% Annoyance-free:
Radio Silence respects your concentration. That is why it will never interrupt you with pop-up windows or alerts. - Zero Maintenance:
Once Radio Silence is installed, you can forget all about it. It is always on and needs no attention from you. - Tiny and Fast:
Radio Silence weighs next to nothing. It doesn’t waste any time or resources, which also makes it blazingly fast. - Usable by Anyone:You don’t have to be a network expert to use Radio Silence. It takes care of all the technical details for you.
- Release notes were unavailable when this listing was updated.
Intel, Mac OS X 10.10 or later
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Radio Silence
Outbound application firewall.
Overview
Radio Silence is an outbound application firewall that lets you block Internet access from individual apps.
Features:
- 100% Annoyance-free: Radio Silence respects your concentration. That is why it will never interrupt you with pop-up windows or alerts.
- Zero Maintenance: Once Radio Silence is installed, you can forget all about it. It is always on and needs no attention from you.
- Tiny and Fast: Radio Silence weighs next to nothing. It doesn’t waste any time or resources, which also makes it blazingly fast.
- Usable by Anyone: You don’t have to be a network expert to use Radio Silence. It takes care of all the technical details for you.
What’s new in Radio Silence
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How would you rate Radio Silence app?
19 Reviews of Radio Silence
strange that the monitor only shows stuff when the app is open.
if i did something and want to check what connections were made, i’m screwed if the app wasn’t running. i’d suggest, that the monitor always shows the last minutes or hours (a time interval set by some preference)
otherwise i have to say the app doesn’t make much sense on its own, because it prevents connections only after you added blocks. this means at least once your info leaked already.
but if that doesnt matter, it is a nice way to check what connections are done by your system or apps.
i have a little feature request if i may: what if the developer added a little on/off (allow/block) switch to every connection in the detail view. that way the user could not only completely block or allow an application, but also control what kind of connections are allowed. the beauty of it is that the UI stays as simple as it is right now, for those not needing this feature, but for power users you get the same kind of control you only get with little snitch.
btw, why cant the app run in the background? i can only minimize it, having it appear twice in my dock. id prefer a menubar option.
Frequently Asked Questions
Can I try the firewall before I buy?
Yes, the downloadable installer includes a free 24-hour trial. The trial is exactly like the full application and has no feature limitations. In addition, you can buy and evaluate Radio Silence without any obligation for a full 30 days. If you aren’t 100% happy with it, for any reason at all, you’ll get your money back.
Is Radio Silence available through the Mac App Store?
No. Firewalls like Radio Silence can’t be sold through the App Store, because they have to peek inside the operating system to see the network connections of other processes. The App Store doesn’t accept applications that need this privilege.
How do I upgrade from the trial version to the full version?
Once your trial is over, Radio Silence will ask for your license key. When you buy Radio Silence, you get your license key to your email inbox. If you want to register your license key before the trial is over, choose «Register…» from the application’s menu.
Do I need to install another version of Radio Silence if I upgrade from the trial version?
No. The trial version is the real thing. It simply has a time limitation. Once you input your license key, the time limitation disappears.
How long do I have to wait for the email after purchase?
The emails are usually sent within one minute of purchase. If you don’t see the email in your inbox, check your spam folder.
I have more than one Mac. Do I have to buy a separate license for each one?
No need. You can install Radio Silence on all the computers you have. The license is for your personal use, and is not tied to a single computer.
What version of OS X / macOS do I need?
Radio Silence requires macOS Catalina (10.15), Mojave (10.14), High Sierra (10.13), Sierra (10.12), OS X El Capitan (10.11) or OS X Yosemite (10.10). Legacy versions are available for older versions of OS X, all the way back to OS X Snow Leopard (10.6).
Do I have to run the Radio Silence application after every reboot to activate it?
No, the Radio Silence firewall is invisible and runs automatically when you start your Mac. If you are happy with your list of blocked applications, you don’t have to do anything.
Does Radio Silence stay active if I close the window or quit the application?
Yes. There’s no need to keep the application window open. The user interface is only used to make changes to the actual firewall. Even if you close the application window, the firewall stays active and vigilant.
What exactly does Radio Silence do?
The firewall lets you make a list of applications that aren’t allowed to access the internet. The network monitor lets you see all the connections made by apps and processes in real time.
How is this different from the built-in firewall in Mac OS X?
The built-in firewall doesn’t stop outbound traffic at all. You can only block incoming connections with it, which doesn’t help with applications that want to phone home. The Radio Silence firewall does stop outbound connections.
Is Radio Silence able to stop Adobe Photoshop from phoning home?
Yes. Radio Silence works with any applications you have installed. (This particular question is asked so often that it is answered here separately. Please be nice and don’t pirate software.)
How do I uninstall Radio Silence?
You can simply move the Radio Silence application to the Trash. If you want to be thorough and remove all traces of the app, also delete the following two files and one directory:
- /Library/LaunchAgents/com.radiosilenceapp.agent.plist
- /Library/LaunchDaemons/com.radiosilenceapp.nke.plist
/Library/Application Support/Radio Silence/
Why do I get the error «Firewall inactive, please restart your Mac»?
Either something went wrong with your installation, or you have an old version of Radio Silence and recently updated your system to OS X El Capitan.
Both issues have the same easy fix. Simply download and run the latest installer. You can safely run the new installer without uninstalling anything first.