Technologies

What Is Mastodon, the Alternative Social Network Now Blocked by Twitter?

Learn everything you need to know about Twitter’s open-source competitor.

Since Elon Musk took control of Twitter on Oct. 27, the social network has been roiled by controversy. First, half the staff was laid off via email, and an ill-advised new implementation of its «blue check» verification system left the site plagued by trolls and fake «verified» accounts. Now, Twitter has banned accounts that Musk promised to protect and suspended several prominent journalists who report on Elon Musk.

Twitters users concerned about changes at the company are looking for other social media options, and the open-source network Mastodon has been a big beneficiary. Mastodon Count, a bot that tracks usage on the network, showed a 400% increase in the rate of new account signups on Dec. 15, when Twitter suspended the journalists who cover Musk.

The growing popularity of Mastodon might partly explain why Twitter is now blocking many links to Mastodon servers and suggesting the URLs are «harmful» or include malware. Twitter has also suspended the official account for Mastodon, prompting a joke from creator Eugen Rochko about never having to check Twitter notifications again.

Read on to see how Mastodon works, how to sign up, and how it compares to Twitter. For more, see how to delete your Twitter account, and get the latest on Twitter’s verification badge plans.

What is Mastodon and how is it different from Twitter?

Mastodon is a free social media service that functions much like Twitter. You can post «toots» (instead of tweets), follow other people and organizations, and favorite (like) and boost (retweet) posts from other people.

Mastodon was created and originally released in October 2016 by Eugen Rochko, the CEO and lone employee of the nonprofit organization Mastodon gGmbH. In May, Rochko explained the service’s oddly named substitute for «tweet.» He says the original button was called «publish,» but a committed supporter promised lifetime support of the Mastodon Patreon account if he would change it to «toot.» (On the iOS and Android apps it says «publish.»)

In an interview with Time Magazine, Rochko said he began developing Mastodon when he realized that «being able to express myself online to my friends through short messages was actually very important to me, important also to the world, and that maybe it should not be in the hands of a single corporation that can just do whatever it wants with it.»

Read more: Mastodon Is No Twitter Replacement

Instead of one town square for everyone, however, Mastodon is composed of thousands of social networks, all running on different servers, or «instances,» that can communicate with each other through a system called the Fediverse. The Fediverse also contains other social networks like PeerTube for videos, Funkwhale for music, PixelFed for photos and NextCloud for files.

Mastodon servers aren’t required to be connected to the Fediverse, In fact, the most famous Mastodon instance is Truth Social, the social network of former US president Donald Trump.

How do I join Mastodon?

The hardest part of Mastodon is getting started. Since there’s no one common Mastodon area for everyone — as with Twitter — you’ll need to register on a specific Mastodon server.

Servers can be based on a geographic location, subject interest, professional background or literally anything an administrator can think of. For example, the folks at dolphin.town are only allowed to post the letter «E,» while the literary buffs at oulipo.social are forbidden from ever using the letter «E» (in honor of OuLiPo writer Georges Perec’s lipogram «La Disparition«).

Two of the biggest Mastodon servers, aka instances, are mastodon.social — the official server of the Mastodon project — and mstdn.social, though both have temporarily paused registrations. Another large general server that I recently joined is mas.to. Other popular Mastodon instances include masthead.social for journalists and fosstodon.org for open-source software.

Don’t worry too much about which server you pick — you can join as many as you want and leave or switch servers at any time. And you can follow people across servers, so picking one doesn’t keep you from communicating with those on other instances.

One good place to find a server to join is the official Mastodon website at joinmastodon.org. The site currently lists about 80 servers that have committed to the Mastodon Server Covenant, an agreement to enforce moderation, make backups of the site and give at least three months warning before ever shutting down an instance.

Each server’s «about» page will tell a little bit about the Mastodon instance and list the server’s rules. If you don’t find a server that you like on joinmastodon.org, you can try other Mastodon directories, such as instances.social, which offers a wizard for picking a server as well as a sortable list of 16,412 instances.

Most Mastodon servers with open registration will only ask for your email address and a password to get started. Once you respond to a verification email, you’re ready to start using Mastodon. Other, more private Mastodon servers may ask you to make a request to join and then wait for an invitation.

How do I use Mastodon?

Like Twitter, Mastodon lets you post short messages to the world or to select people, but instead of tweets, Mastodon posts are called toots. And many of Mastodon’s other features are a lot like Twitter’s, too, with slight differences. Each post is limited to 500 characters (instead of 280), and you can include links, images (JPG, GIF or PNG, up to 8MB), audio files (MP3, OGG, WAV, FLAC, OPUS, AAC, M4A and 3GP up to 40MB) and videos (MP4, M4V, MOV, WebM up to 40MB).

Your posts on Mastodon can be set to be public, only for your followers or completely unlisted from all timelines. You can create polls for your followers and use all your favorite usual emojis, plus custom emojis created for specific servers.

Any post can be marked with an explanatory «content warning» that requires a click before viewing, and Mastodon users take advantage of the feature often.

You can even edit posts on Mastodon. Each version of your toot remains available for review, and people who reblog your post are notified after it’s edited.

Just like Twitter, Mastodon uses hashtags that start with the «#» symbol, such as #Gaming, #Anthropology or #Veganism. Since there’s no algorithm to suggest your posts to nonfollowers, using hashtags to categorize your posts for people who might be interested is even more important than on Twitter.

You can follow any account on Mastodon, whether or not it’s on your own server instance, and the account’s posts will be added to your Home feed in chronological order. Know that for some accounts, you need to request permission to follow them.

Free web apps like Debirdify, Fedifinder and Twitodon can help you find accounts you followed on Twitter that have migrated to Mastodon.

If you don’t want a particular account following you, you can block them just like on Twitter, or you can choose to block an entire server.

Mastodon lets you «favorite» posts, but the favorites count doesn’t appear on timelines — if you want to promote someone else’s posts, you’ll need to «boost» or reblog them. Unlike Twitter, there are no «quote toots» on Mastodon, a deliberate choice to discourage «dunking» on other people’s posts. A separate «bookmark» feature lets you save toots on Mastodon without notifying the account that posted it.

Mastodon does have a feature called Direct Messages, but the name is a little misleading. Rather than providing person-to-person messages, Mastodon’s feature sets the visibility of a post to only the people mentioned in it. In other words, they’re toots that only certain people can see, rather than actual direct messages.

How do the Mastodon timelines work?

Whereas Twitter just has one timeline (sorted chronologically or by «top stories»), Mastodon has three: your Home timeline shows all the posts and reblogs from everyone you follow, your Local timeline shows everything from your own server instance, and your Federated timeline shows all posts from all Mastodon servers on which you follow someone.

Using a web browser, you can set Mastodon to look like Twitter, showing one feed at a time, or you can view multiple feeds and notifications simultaneously (much like Tweetdeck) by selecting «Advanced view» from your Preferences.

Are there any mobile apps for Mastodon?

You bet. Due to the open-source nature of Mastodon, you have a lot of choices for apps on both iPhone and Android.

Your first and easiest option is the official app from Mastodon gGmbH (for iOS or Android), but there are other solid third-party apps. The two most popular alternative Mastodon apps right now are Metatext for iPhone and Tusky for Android.

Mastodon apps for iPhone:

Mastodon apps for Android:

If you do get started with Mastodon, make sure to follow me @peterbutler@mas.to. (And say hello!)

For more about social media and Twitter, follow a timeline of the Elon Musk purchase and read about the big changes that could be in store for Twitter.

Correction, Nov. 7: A previous version of this story incorrectly described Mastodon’s features. Mastodon added the ability to edit posts in March 2022.

Technologies

Microsoft Is Eliminating Passwords in August: Here’s What You Need to Do to Prepare

Microsoft Authenticator has already stopped autofilling passwords, but the biggest change comes next month.

In June, Microsoft Authenticator stopped letting users create new passwords. In July, it turned off the autofill password function. And in August, the login app will stop supporting passwords entirely, moving to more secure passkeys, such as a PIN, fingerprint or facial recognition.

Attila Tomaschek, CNET’s software senior writer and digital security expert, says that passkeys are a safer alternative to the risky password habits practiced by 49% of US adults, according to a recent survey by CNET.

«Passwords can be cracked, whereas passkeys need both the public and the locally stored private key to authenticate users, which can help mitigate risks like falling victim to phishing and brute-force or credential-stuffing attacks,» Tomaschek said.

Using the same password for several accounts or adding personal hints can be a convenient way to remember your login. But that puts you at a big risk for scammers, identity theft and fraud. Here’s more on Microsoft’s plan for eliminating passwords and how to make the switch to passkeys before August.

When will Microsoft Authenticator stop supporting passwords?

Microsoft Authenticator houses your passwords and lets you sign into all your Microsoft accounts using a PIN, facial recognition like Windows Hello, or other biometric data like a fingerprint. Authenticator can be used in other ways, such as verifying you’re logging in if you forgot your password, or using two-factor authentication as an extra layer of security for your accounts. In June, the company stopped letting users add passwords to Authenticator, but here’s a timeline of other changes you can expect from Microsoft.

July 2025: You won’t be able to use the autofill password function.
August 2025: You’ll no longer be able to use saved passwords.

If you still want to use passwords instead of passkeys, you can store them in Microsoft Edge. However, CNET experts recommend adopting passkeys during this transition. «Passkeys use public key cryptography to authenticate users, rather than relying on users themselves creating their own (often weak or reused) passwords to access their online accounts,» Tomaschek said.

Why are passkeys a better alternative to passwords?

So what exactly is a passkey? It’s a credential created by the Fast Identity Online Alliance that uses biometric data or a PIN to verify your identity and access your account. Think about using your fingerprint or Face ID to log into your account. That’s generally safer than using a password that is easy to guess or susceptible to a phishing attack.

Passkeys aren’t stored on servers like passwords. Instead, they’re stored only on your personal device. More conveniently, this takes the guesswork out of remembering your passwords and the need for a password manager.

How to set up a passkey in Microsoft Authenticator

Microsoft said in a May 1 blog post that it will automatically detect the best passkey to set up and make that your default sign-in option. «If you have a password and ‘one-time code’ set up on your account, we’ll prompt you to sign in with your one-time code instead of your password. After you’re signed in, you’ll be prompted to enroll a passkey. Then the next time you sign in, you’ll be prompted to sign in with your passkey,» according to the blog post.

To set up a new passkey, open your Authenticator app on your phone. Tap on your account and select «Set up a passkey.» You’ll be prompted to log in with your existing credentials. After you’re logged in, you can set up the passkey.

Technologies

The AI Chatbots We Use Most, and How We Use Them

91% of AI users have a default artificial intelligence assistant they turn to for their AI tasks, a Menlo Ventures report has found.

If you have a particular artificial intelligence tool that you tend to try first every time you’re in need of an AI assist, you’re not alone. According to a new survey, 91% of people who use AI have a favorite chatbot they try first, whether it’s ChatGPT, Gemini, Alexa or something else.

A Menlo Ventures survey of 5,000 adults found that this «default tool dynamic» means most people using AI have chosen a general AI tool they’ll try first for every job, even if it’s not necessarily the best tool for the job.

In the report, ChatGPT is the AI assistant that tops default tools, with 28% of respondents choosing it first. It’s followed by Google’s Gemini at 23%, Meta AI and Amazon’s Alexa, both at 18% and Apple’s Siri at 16%. Other tools including Claude, Grok and Perplexity collectively make up another 33%.

Some of the most common ways people are using these AI tools include composing emails and other writing support, researching topics of interest and managing to-do lists, according to Menlo Ventures.

Some of that, Menlo Ventures says, is «first-mover advantage,» with tools like ChatGPT having built up a following by being the first to offer some chatbot and image-generation features. But, the company warns, «that position is not guaranteed,» with challengers moving fast.

«The consumer market for [large language models] is still nascent and far from saturated,» the report says, «leaving ample room for product innovation to shift market share over time.»

Overall, 61% of Americans have used AI in the last six months and nearly 1 in 5, 19%, rely on it daily, the report says.

Technologies

This Early Prime Day Deal Lets You Grab AirPods 4 At Their Lowest Price Yet

Apple’s AirPods 4 have dropped to their lowest price of 2025 — but this early Prime Day deal won’t last long.

Prime Day is still a few sunsets away, but Amazon isn’t waiting around. The retailer has already started slashing prices across tons of popular products, including the much-loved AirPods 4 (ANC).

For a limited time, you can snag these for 2025’s best price of just $149. This saves you $30, and you don’t even have to enter any codes or clip any coupons. The catch? We can’t promise that this deal will stick around for much longer.

This is the latest generation of Apple’s earbuds. The Apple AirPods 4 have the same H2 chip found in the AirPods Pro 2, so you can expect great sound quality. They also rock a more compact design with this new generation and offer excellent voice-calling performance. Plus, Spatial Audio support adds a touch of personalization.

Note that this deal is for the ANC (active noise cancellation) model of these earbuds. It comes with a wireless charging case and a speaker that can help you find them using Apple’s Find My tracking service.

«With a slightly smaller design, improved sound and Apple’s powerful H2 chip features, the Apple AirPods 4 are a worthy upgrade,» said CNET audio expert David Carnoy in his AirPods 4 review. «But what really makes them special is the noise canceling in the step-up ANC model.»

Hey, did you know? CNET Deals texts are free, easy and save you money.

What’s the competition like? You can find out by reading through the best early Prime Day deals on headphones and speakers, where we’ve rounded up all the latest and greatest prices from the likes of Apple, Sony, Beats and many more big names. Just be sure to get your orders in before the deals expire.

HEADPHONE DEALS OF THE WEEK

Sony WH-1000XM4 Wireless Noise Cancelling Over-Ear Headphones (Navy):

$298 (save $50)
Soundcore Life Q20 Hybrid Active Noise Cancelling Headphones (Black):

$40 (save $20)
Beats Studio Pro Wireless Noise Cancelling Headphones (Black):

$300 (save $51)
Sennheiser Momentum 4 Wireless ANC Over-Ear Headphones (Black):

$299 (save $151)
Bowers & Wilkins Px7 S2e ANC Over-Ear Headphones (Black):

$220 (save $180)

Deals are selected by the CNET Group commerce team, and may be unrelated to this article.

Why this deal matters

Apple products rarely go on sale, and when they do, the stock tends to run out before the deal window closes. Combine that with AirPods 4 being Apple’s latest AirPods and this discount being the year’s all-time low price — you have a nice offer in your hands.