With free parental control software, you can have that peace of mind knowing that your children are safe from inappropriate or adult content. These apps can take some of the worry out of letting your children use the internet when you can't watch them directly, at no cost to you.

The best free parental control software is Qustodio, which offers a comprehensive suite of tools to keep your kids safe online including content-filtering and time limits. However, it's not your only option, so we've also gathered together four of the best alternative tools so you can make the best choice for you and your kids.

In an ideal world, the web would be a safe space for kids. Unfortunately, that is far from reality, and as a busy adult, it’s not always possible for you to spend the time to be there while your children are online. This is where free parental control software can help - by allowing you to either block access to particular sites that may have concerning content, or only permit access to sites you deem suitable, this tool can help protect your kids.

The best free parental control software will look after the kids when you're unable to, whether they are conducting research for a school project, keeping in touch with friends, or simply enjoying all the good things that the Internet does offer. It does not matter what age your child is, or whether they are using a mobile device, Windows or a macOS computer. In this roundup, you will find the perfect free parental control software to lend you a vigilant hand.

The best parental control software right now is: Qustodio

Qustodio's premium parental control tools are the best around. YouTube monitoring, the ability to see time spent on social networks, time limits for games and call tracking are just some of the options available. These tools aren't free, but they'll provide an extra layer of protection to keep your kids safe.

(Image credit: Qustodio/Shutterstock)

Most parental control software is aimed at Windows users, but Qustodio (think 'custodian') is also available for Mac, Android, iOS, Kindle and Nook.

The free version is one of the most comprehensive parental control apps around, enabling you to set rules and time schedules, block pornography and other unsuitable content. If you go for the paid-for version, you'll also get SMS monitoring, social media features and per-app controls.

Its raft of features and support for a wide range of platforms make Qustodio the best free parental control software, but there are some other excellent free programs available, some of which may be better suited to your individual needs as a parent. Read on for the rest of our our top choices.

Read our full Qustodio review

(Image credit: OpenDNS/Shutterstock)

FamilyShield is a free service from OpenDNS. Its parental control tools automatically block domains that OpenDNS has flagged under the headings "tasteless, proxy/anonymizer, sexuality, or pornography".

One of the big pluses here is that while FamilyShield can run on PCs and mobile devices, you can also apply it to your network router and filter all the traffic that passes through it – it's just a matter of changing the DNS server numbers in your control panel.

This has the happy benefit of improving DNS lookup speeds on some ISPs. By filtering everything at the router level, every device on your network benefits from the filters. For more options, there's also a premium service available.

(Image credit: Kidlogger/Shutterstock)

Nothing gets past KidLogger. This free parental control software not only tracks what your children type and which websites they visit – it also keeps a record of which programs they use and any screengrabs they take.

If you're concerned about who your kids might be talking to online, there's even a voice-activated sound recorder. If your children are a little older and more responsible, you can pick and choose which options to monitor and give them a little privacy.

The free software only covers one device and lacks some of the sneakier features of the premium editions (including silent monitoring of WhatsApp conversations and the ability to listen to Skype calls), but it's still a well-rounded tool if you're concerned about your kids' safety.

Read our full Kidlogger review

(Image credit: Spyrix/Shutterstock)

4. Spyrix Free Keylogger Find out what your kids are typing, and if they might be in trouble Operating system: Windows Visit site Remote monitoring Monitors clipboard and printers No content blocking Only for Windows

Keyloggers have something of a bad reputation online, as they're often used by crooks hoping to capture passwords and bank details, but they can be a force for good too, and Spyrix Free Keylogger enables you to see what your children have been up to.

Although it's dubbed parental control software, the free version of Spyrix really a monitoring program; it doesn't stop the kids getting up to no good, but it does let you see exactly what they've done. If you want content blocking too, premium subscriptions start at US$59 (about £45, AU$75).

The absence of filtering means Spyrix might not be the best choice for younger kids' computers, but it may be useful for older children if you suspect online bullying or other unpleasantness.

(Image credit: Kaspersky/Shutterstock)

5. Kaspersky Safe Kids Parental control software for all devices Operating system: Windows, macOS, Android, iOS Visit site Available for multiple platforms App and screen-time management Extra mobile-specific tools May slow Windows PCs

Kaspersky Safe Kids is parental control software for all devices – desktop and mobile – with both free and paid-for versions.

The free edition includes a blacklist that prevents your kids seeing inappropriate content online, plus app controls that let you manage app use by time used, age restrictions, and category (if you don't want your kids playing games on a school night, for example). There's also a screen time management tool to help you control overall device use,

The paid version adds more mobile-specific features, including a battery tracker so you can see if your kid's phone is about to go flat, leaving them without a way to contact you. You can also keep an eye on their location with GPS tracking, manage their social media use, and receive real-time alerts if they visit websites they shouldn't or leave a pre-defined 'safe' area.

We found that it took longer than usual to log into a Windows account when Kaspersky Safe Kids was running on a Windows 10 PC, so this is worth bearing in mind if your kids' PC is a little on the slow side already.

Other apps to consider

Wondershare Famisafe

A premium parental control app for mobile devices, Famisafe can be installed on up to 30 devices per account. It features all the usual tools for keeping kids safe, including setting time limits and blocking inappropriate content, but can also detect potentially inappropriate photos and text messages, block games, and monitor your kids' whereabouts with GPS and geofencing.