Lots of people are looking for a Twitter alternative after Elon Musk bought the social media site last month, changed the site’s rules on impersonation, fired half of the site’s staff, and announced plans to sell “blue check” verification badges for $8 per month.
One of the fastest growing alternatives is Mastodon, which looks and feels a lot like Twitter.
But Mastodon isn’t a Twitter clone. It’s a free open-source platform, originally launched in 2016 by developer Eugen Rochko, and it’s made up of many different instances, or servers, instead of being managed by one company on one domain name.
This makes signing up and getting finding your friends a little bit harder.
There are also strange little quirks as well. Tweets are called “toots.” Retweets are called “boosts.” Because it’s an open-source project, it doesn’t have the same level of polish as social media sites like Twitter that are owned and operated by professionals.
Emails and loading can be slow. It’s a little bit like using Linux versus Windows or MacOS.
Mastodon has been growing fast. In the 12 days after Musk bought Twitter, Mastodon app downloads on Apple App Store and Google Play for Android surged more than 100 times previous rates to 322,000 installs during the period, according to analysis by Sensor Tower, an app analytics firm.
On Nov. 7, Mastodon founder Rochko tooted that there were over 1 million monthly active users of the service. That’s still a lot lower than the over 245 million daily active users of Twitter that CEO Elon Musk tweeted about this week.
Here’s what you need to know about Mastodon:
First, you need to pick a server, or instance
Because anyone can set up their own Mastodon server, there’s no central place to sign up like twitter.com. You have to find a server to sign up for. They’re known as “instances,” and you can think of them like e-mail providers.
A user on one instance can interact with users on other instances, including following, replying, and boosting. All instances taken together are called “the fediverse.” (The term comes from “federated,” which refers to the loosely connected way the servers work together — again, similar to email.)
Each instance has its own URL, which comes after your username, sort of like an email domain. There are over 5,000 instances, according to a site tracking Mastodon use, and they often follow a particular theme, such as geographical region or topic. Some require you to fill out a short application form with information like your interests or why you want to join that instance. Some servers are small and only for a small handful of friends.
There’s even a quiz that you can take to find which instance might be right for you.
The most popular instance is mastodon.online, which is also administered by the service’s founder. Bigger instances mean many of the best or shortest usernames on the server have already been taken. There’s also a list of instances you can join on Mastodon’s website.
Unlike Twitter, many of the instances that Mastodon runs on are not-for-profit, and some raise money for server costs and other expenses on sites like Patreon. It’s possible that some instances could stop operating because their administrators lose interest.
All instances have a feed just for people on that server that shows all toots posted in that instance in chronological order. But you can also just look at your personalized feed, which shows only toots from the people you follow — that’s the experience that’s most like Twitter.
Your username includes your server’s name
Following isn’t as simple as it is on Twitter. If you want to follow someone on the same instance as you, press the plus button next to their username.
But if they’re on a different instance than you, it’s best to copy and paste their entire username into Mastodon’s search box— including the part after the second “@” symbol that denotes which server they are on.
For example: @Gargron@mastodon.social is how to follow the CEO of Mastodon. Users who are not on Mastodon.Social need to copy and paste that entire string into their search box.
There’s no verification on Mastodon, and DMs are viewable by the instance administrator. Content moderation is also up to the instance administrator — Mastodon.Social, for example, bans Nazi imagery. Other servers may have looser rules.
How to find friends
Mastodon can be a bit of a ghost town when you first log on, but there are a few ways to find your old favorite tweeters on the platform. Whether they post a lot is a different question.
One of the easiest ways to find people to follow is to search “Mastodon” on Twitter, where people who have created new accounts often post their new handles. Copy and paste it into the Mastodon search box to follow them.
You can also copy and paste your Mastodon handle — with the @ symbol and domain — into your Twitter account to get your existing followers to try to join you.
There are several directories that list interesting people to follow on Mastodon.
If you’d like to try to follow the same people on Mastodon as you did on Twitter, there are several third-party apps that will try to import your follow list, although they require access to your Twitter account — be aware that you’re giving that information away to a third party.
Get tootin’
It’s time to get tooting. A first post that describes your interests or topics can help people find you.
Mastodon, like Twitter in its early days, gives users the choice to use different apps and interfaces to interact with toots and boosts.
Twitter migrants who miss TweetDeck, which displays several timelines on a desktop computer, should enable the Advanced Web Interface option in the settings to bring up a denser interface with multiple columns.
There are also several apps for iPhones and Android devices that work regardless of which instance you’re on. The main Mastodon apps work well, but there are lots of alternative clients.
Make sure to look through the settings for features that aren’t available on Twitter — like automatic post deletions and powerful block and muting features. A sensitive content feature can hide rants or NSFW posts behind a button. The latest version of Mastodon, 4.0, includes new abilities to follow hashtags, translate or edit posts, and additional content filters.
If you don’t like the instance you started on, it’s possible to export your account to another server.
Mastodon isn’t as easy to use as Twitter, nor does it have as many users generating content that will bring you back day after day. But its free, open-source approach with thousands of different servers guarantees that the platform can’t be bought for $44 billion.
U.S. President Donald Trump and China’s President Xi Jinping shake hands before their bilateral meeting during the G-20 leaders summit in Osaka, Japan on June 29, 2019.
Kevin Lamarque | Reuters
The mere prospect of a U.S.-China trade deal is enough to send markets higher.
And that’s before an agreement has been signed officially.
“A lot of the forecasts for technology have been without the benefit of China, so once you can add China back into the equation, that would probably be fairly optimistic for the markets,” Sam Stovall, chief investment strategist at CFRA Research, told CNBC.
Nvidia, for instance, gave an estimate for the current quarter that excludes H20 shipments to China— a reminder of how trade restrictions have complicated the outlook for U.S. tech giants.
A formal U.S.-China deal that clarifies — and perhaps loosens — trade parameters could prompt Big Tech companies to raise their guidance, potentially igniting another wave of buying in a market already dominated by tech heavyweights.
Beyond silicon and software, soybeans are back in play. Reports suggest China may ease its unofficial boycott of U.S. soybeans as part of the agreement. That would go some way toward assuaging Scott Bessent’s pain because he’s not just the U.S. Treasury Secretary, but also a soybean farmer, as he put it in a televised interview.
While Bessent meant that literally — he owns soybean farmland — in the broad trade war between China and the U.S., trade tensions have made daily life more difficult for most of us, turning us all into reluctant farmers of one kind or another. A truce, if it comes, might let everyone harvest some peace.
What you need to know today
Trump suggests an agreement with China is imminent. Speaking aboard Air Force One on Monday, Trump said he and Chinese President Xi Jinping are going to “come away with” a trade deal. The U.S. president also signaled a TikTok deal could come on Thursday.
Amazon is preparing to announce largest layoffs in its history. The cuts, which will impact almost every division, will begin Tuesday, according to a person familiar with the matter. Up to 30,000 employees will be affected, Reuters reported.
HSBC beats earnings expectations. Third-quarter profit before tax came in at $7.3 billion, higher than the $5.98 billion estimate compiled by the bank. However, that figure was 14% lower from a year earlier because of higher operating expenses.
[PRO] Time to put cash elsewhere when Fed cuts rate. The returns of money market funds depend on prevailing interest rates. When the Fed all but certainly cuts rates, investors should start moving their funds out of cash instruments, analysts say.
And finally…
President and CEO of Saudi’s Aramco, Amin H. Nasser, speaks during the Future Investment Initiative (FII) in Riyadh, Saudi Arabia October 29, 2024.
According to Saudi Arabia’s Minister for Investment Khalid Al Falih, 50.6% of the Saudi economy is now “completely decoupled” from oil.
The country is doubling down on fast-growing sectors such as artificial intelligence for growth. Al Falih said the kingdom will be a “key investor” in developing AI applications and large-language models, adding that Saudi Arabia would also build data centers “at a scale and at a competitive cost not achieved anywhere else.”
Cathie Wood, chief executive officer of Ark Investment Management LLC, during the Federal Reserve’s Payments Innovation Conference in Washington, DC, US, on Tuesday, Oct. 21, 2025.
Aaron Schartz | Bloomberg | Getty Images
ARK Invest CEO Cathie Wood on Tuesday pushed back on fears of an artificial intelligence bubble, while flagging the possibility of a “reality check” on AI valuations.
Speaking to CNBC’s Dan Murphy on the sidelines of Saudi Arabia’s Future Investment Initiative (FII) in Riyadh, Wood said that as interest rates begin to rise, “there will be a shudder” in markets.
“We are going to reach a moment in the next year where the conversation will shift from lower interest rates to rising rates,” the closely watched investor said.
“There are a lot of people out there … who think that innovation and interest rates are inversely correlated. That is not true over history,” Wood said.
“I want to disabuse people of that notion. But nonetheless, the way algorithms work these days, we think there will be a reality check, shall we say.”
Her comments come amid concerns of soaring tech valuations as both businesses and investors pour money into the sector.
Wood is one of many business leaders to have waded into the AI bubble debate, particularly as AI-driven spending has led to record deals and valuations.
Earlier in the month, the International Monetary Fund and Bank of England became the latest financial institutions to warn that global stock markets could be in trouble if investor appetite for artificial intelligence turns sour.
IMF chief Kristalina Georgieva offered some blunt advice to investors at the time: “Buckle up: uncertainty is the new normal and it is here to stay.”
Ark Invest’s Wood said Big Tech valuations will make sense in the longer term, however.
“I’m not saying there will never be any corrections. Of course there will, as many people worry: ‘OK, is this too much, too soon?’ But if our expectations for AI, especially embodied AI in the way that I just described, are correct, we are at the very beginning of a technology revolution,” Wood said.
Asked whether AI was in a bubble right now, Wood replied: “I do not believe AI is in a bubble. What I do think is, on the enterprise side, it is going to take a while for large corporations to prepare themselves to transform.”
She added: “It’s going to take a company like Palantir going into the largest enterprises and really restructuring them in order to really capitalize on the productivity gains that we think are going to be unleashed by AI.”
Investors are closely watching a number of key market catalysts, including Big Tech earnings and a Federal Reserve interest rate decision. The U.S. central bank is widely expected to cut rates for the second time this year.
Sam Altman, chief executive officer of OpenAI Inc., during a media tour of the Stargate AI data center in Abilene, Texas, US, on Tuesday, Sept. 23, 2025.
Kyle Grillot | Bloomberg | Getty Images
OpenAI on Monday said the U.S. needs to substantially ramp up its investment in new energy capacity if it wants to stay ahead of China in the race to develop artificial intelligence.
“Electricity is not simply a utility,” OpenAI said in a blog post Tuesday. “It’s a strategic asset that is critical to building the AI infrastructure that will secure our leadership on the most consequential technology since electricity itself.”
Read more CNBC tech news
OpenAI shared an 11-page submission with the White House Office of Science and Technology Policy, in which it encouraged the U.S. to commit to building 100 gigawatts of new energy capacity each year.
A gigawatt is a measure of power, and 10 gigawatts is roughly equivalent to the annual power consumption of 8 million U.S. households, according to a CNBC analysis of data from the Energy Information Administration.
OpenAI said that China added 429 gigawatts of new power capacity last year, while the U.S. added 51 gigawatts. The company said this disparity is creating an “electron gap” that is putting the U.S. at risk of falling behind.