Seeing and blocking what apps connect to
Open alternatives5

OpenSnitch is a free firewall program for Linux computers that asks you before an app connects to the internet, and lets you allow or block it. It is for everyday Linux users who want to see and control which programs send data out.
Has 3 of 7 · Windows, Mac and Linux app ✗
How many people bookmarked its code on GitHub. It shows how popular it is, not how good it is or how well it replaces the app.
How hard it is to start using it. Easy: install it like a normal app, or use it in your browser. Advanced: you run it on your own server, use the command line, or it is a tool for developers.
Its code changed within the last year, so someone is still looking after it.
Does the whole job.
Ordered by how fully it replaces the app, Verified, setup and, when there are enough, people's votes.

Portmaster is a free program for Windows and Linux computers that watches which apps connect to the internet and can block connections the user does not want. It is aimed at everyday people who want more control over their computer's network activity and privacy.
Has 1 of 7 · Phone app ✗
How many people bookmarked its code on GitHub. It shows how popular it is, not how good it is or how well it replaces the app.
How hard it is to start using it. Easy: install it like a normal app, or use it in your browser. Advanced: you run it on your own server, use the command line, or it is a tool for developers.
Its code changed within the last year, so someone is still looking after it.
Does the whole job.
Ordered by how fully it replaces the app, Verified, setup and, when there are enough, people's votes.

NetGuard is a free Android app that lets you choose which apps and internet addresses can use your Wi-Fi or mobile data, without needing to root your phone. It is for everyday Android phone and tablet users who want to save data, battery, or privacy.
Has 1 of 7 · Windows, Mac and Linux app ✗ +1
How many people bookmarked its code on GitHub. It shows how popular it is, not how good it is or how well it replaces the app.
How hard it is to start using it. Easy: install it like a normal app, or use it in your browser. Advanced: you run it on your own server, use the command line, or it is a tool for developers.
Its code changed within the last year, so someone is still looking after it.
Does the whole job.
Ordered by how fully it replaces the app, Verified, setup and, when there are enough, people's votes.

Sniffnet is a desktop app that shows the internet connections your computer is making, including which programs are using the network and where the traffic goes. It is for everyday people who want to see what their network traffic is doing.
Has 3 of 7 · Blocks app connections ✗ +1
How many people bookmarked its code on GitHub. It shows how popular it is, not how good it is or how well it replaces the app.
How hard it is to start using it. Easy: install it like a normal app, or use it in your browser. Advanced: you run it on your own server, use the command line, or it is a tool for developers.
Its code changed within the last year, so someone is still looking after it.
Does part of the job.
Ordered by how fully it replaces the app, Verified, setup and, when there are enough, people's votes.

simplewall is a free program for Windows that controls which apps can use the internet on your computer. It is meant for advanced users who are comfortable changing network settings.
Has 2 of 7 · Asks before new connections ✗
How many people bookmarked its code on GitHub. It shows how popular it is, not how good it is or how well it replaces the app.
How hard it is to start using it. Easy: install it like a normal app, or use it in your browser. Advanced: you run it on your own server, use the command line, or it is a tool for developers.
Its code changed within the last year, so someone is still looking after it.
Does part of the job.
Ordered by how fully it replaces the app, Verified, setup and, when there are enough, people's votes.
| Project | |||||||
|---|---|---|---|---|---|---|---|
| OpenSnitch | · | · | · | ||||
| Portmaster | · | ||||||
| NetGuard | |||||||
| Sniffnet | · | · | |||||
| simplewall | · | · | · |
YesPartlyNoNot checked yet