What Are Altcoins?

Bitcoin gets most of the headlines. But open any crypto exchange or app, and something else jumps out immediately: a long list of other digital assets — tokens, each with its own name, ticker, and price.

ETH, SOL, DOGE, XRP - and that’s before you’ve even scrolled past the first page.

These are all altcoins. The word covers any cryptocurrency that isn’t Bitcoin — and once you understand what they are and why they exist, that overwhelming list starts to make a lot more sense.

Key Takeaways

• Altcoins are any cryptocurrency that is not Bitcoin. They range from major platforms with billions of dollars in activity to meme tokens with no technical purpose.
• Different altcoins serve different functions. Smart contract platforms, payment coins, stablecoins, DeFi protocols, infrastructure tokens, and memecoins each fill a different role in the crypto ecosystem.
• Market cap does not equal safety. Even the largest altcoins experience significant price swings and carry real risks, from regulatory uncertainty to technical failures.
• Stablecoins are a special case. Unlike most altcoins, they are designed not to change in price — but they still depend on the trustworthiness and reserves of their issuers.
• Always do your own research. No article can replace a thorough understanding of any asset you are considering. Understand what a project does, who is behind it, and what risks it carries before committing any funds.

What Is An Altcoin?

As you might have guessed, altcoin is short for “alternative coin.” Basically, if a cryptocurrency runs on a blockchain and it isn’t Bitcoin, it’s an altcoin. Ethereum, Solana, Dogecoin, XRP — all of them are altcoins.

Easy, right? However, you’re probably asking yourself…Why are there thousands (or millions) of them?

To explain that, we have to go back to Bitcoin once again. BTC was the OG of crypto. Launched in 2009 as a peer-to-peer payment system, it proved that decentralized digital money could actually work. But it was built to do one thing well (and one thing only): transfer value securely. It was never designed to run applications, process transactions at high speed, or hold a stable price.

That left room for others to experiment. Some developers wanted faster payments. Others wanted to build programmable (smart) contracts directly on a blockchain. Some wanted to create stablecoins — digital currencies designed to hold a steady value. And a few just wanted to have fun with internet culture. Each of those goals led to the creation of a different altcoin.

The result is the sprawling landscape you see today. The barrier to creating a new cryptocurrency is low, and many different teams around the world have launched projects to address different problems — or, in some cases, no real problem at all. Not every altcoin is useful, not every altcoin will survive, and many carry significant risk. But as a category, altcoins represent the broader range of what blockchain technology can do beyond Bitcoin.

How To Think About The Altcoin Universe

Before diving into specific coins, it helps to have a rough mental map. You can group most altcoins into a handful of categories based on what they are trying to do:

Smart contract platforms are blockchains designed to run programs — not just move money. Smart contract platforms are also called Layer 1s, or L1s, because they form the base layer that everything else (like those programs) is built on top of. Ethereum is the most well-known example, but several competitors exist. These platforms power most of the apps you hear about in crypto.

Payment coins focus on making transactions even faster or cheaper than Bitcoin. Basically, they just want to be practical digital cash for everyday use.

DeFi protocols — short for decentralized finance — let people lend, borrow, or trade assets without traditional banks or brokers. They typically run on top of smart contract platforms.

Infrastructure tokens power the behind-the-scenes services that blockchains need to function, such as connecting to real-world data or enabling communication between different networks.

Stablecoins are cryptocurrencies pegged to a stable asset, usually the U.S. dollar. They are designed to avoid the price swings that most other cryptocurrencies experience.

Memecoins began as jokes or internet culture experiments. They often have no technical innovation behind them whatsoever. Still, they can attract enormous attention and trading volume.

These categories are not very strict. Some tokens overlap across boundaries, and new types emerge regularly. But this framework provides a useful starting point for understanding the altcoin landscape.

Seven Major Altcoins

The following seven altcoins are among the most prominent by market capitalization — the total value of all their coins in circulation. Each one represents a different approach to what a blockchain can be.

Ethereum (ETH)

Ethereum (ETH) is the second-largest cryptocurrency after Bitcoin, and the most widely used smart contract platform (Layer 1). A smart contract is a program stored on a blockchain that runs automatically when certain conditions are met — no middleman required. Think of it like a vending machine: you put in the right input, and the output happens on its own.

What makes Ethereum distinct is that it was the first blockchain designed to be programmable. While Bitcoin lets you send digital money, Ethereum lets developers build entire applications, from lending platforms to digital art marketplaces, directly on the network. Most major innovations in decentralized finance, unique blockchain-verified digital items known as NFTs (nonfungible tokens), and tokenized assets — all of them originated on Ethereum.

Ethereum transitioned from a Bitcoin-inspired proof-of-work system — where computers compete to solve complex puzzles to confirm transactions, consuming large amounts of energy — to proof-of-stake, where validators are chosen based on how much of the currency they lock up as a guarantee.

The switch, completed in 2022, significantly reduced the network's energy usage. However, the network still faces challenges. Transaction fees can rise sharply during busy periods, and it relies heavily on secondary networks, known as Layer 2s, to handle higher volumes at lower cost.

ETH, like all cryptocurrencies, can experience significant price swings, and the platform’s complexity introduces technical risks that simpler blockchains do not.

Speaking of simpler blockchains, Ethereum’s success proved there was a market — and others moved in to compete. 

BNB

Several platforms have since emerged aiming to do what Ethereum does, but faster, cheaper, or with different trade-offs. BNB Chain is one of the most prominent. BNB is the native token of the BNB Chain, a blockchain built and operated by Binance, one of the world’s largest cryptocurrency exchanges. Originally launched as a simple utility token that reduced trading fees on Binance, BNB has evolved to power its own ecosystem of decentralized applications (dApps).

BNB Chain’s main advantage is speed and low cost. Transactions settle quickly and at low cost, making it popular for decentralized applications in regions where users are especially cost-sensitive. The network hosts a wide range of DeFi platforms, games, and other applications.

The trade-off is centralization. BNB Chain has fewer validators — computers that confirm transactions — than networks like Ethereum, making it more reliant on a smaller group of participants. Its close connection to Binance also means that regulatory actions against the exchange could affect the broader BNB ecosystem. As with any altcoin, the value of BNB can fluctuate sharply.

BNB Chain competes with Ethereum in applications. XRP, by contrast, was never trying to be a platform for apps at all — it was built with a completely different goal in mind.

XRP

XRP was built for a very specific customer: financial institutions. Banks, payment providers, and organizations that need to move money across borders — not individual retail users.

That focus shapes everything about it. The XRP Ledger processes transactions in seconds, at a fraction of a cent. Rather than using mining or traditional proof-of-stake validation, it relies on a network of trusted validators that reach agreement on each transaction. Speed and cost are the whole point.

XRP’s history includes a lengthy lawsuit between Ripple — the company behind XRP — and the US Securities and Exchange Commission, over whether XRP qualifies as a security. Such regulatory questions are not unique to XRP: they affect many cryptocurrencies globally, but they do illustrate the kind of legal risk that can affect an altcoin’s price and adoption. The case was resolved in 2025: the court found that XRP sold on public exchanges does not qualify as a security. However, certain institutional sales were ruled to have violated securities law. Ripple paid a $50 million penalty — far less than the $2 billion originally sought.

XRP targets the institutional payments market. Solana, on the other hand, aims at the same developer market as Ethereum — but with a very different technical approach.

Solana (SOL)

Solana was built around a clear thesis: that speed and low fees would determine which smart contract platform developers and users actually chose.

It delivers on that. Solana is a high-speed Layer 1 that can process thousands of transactions per second at very low fees, making it a faster, cheaper alternative to Ethereum for building decentralized applications.

Solana’s approach is quite unusual. It uses a combination of proof-of-stake and a mechanism called proof-of-history, which essentially timestamps transactions before they are confirmed. This allows the network to order transactions more efficiently without requiring every validator to communicate with every other validator in real time.

The platform has attracted a large developer community and hosts a growing range of applications, from DeFi to NFTs to consumer-facing products. It has also become the go-to chain for memecoin launches: its low fees make it cheap to create and trade new tokens, which has driven enormous volume on the network, alongside considerable speculation. That said, Solana has experienced several notable network outages over its history, raising questions about reliability. The network is also more hardware-intensive to run as a validator, which can raise centralization concerns. SOL’s price has been volatile, with significant swings in both directions.

Solana’s primary audience is developers building applications. Tron has taken a different path, finding its biggest use case not in building apps but in a more specific, everyday function: payments.

Tron (TRX)

Tron doesn’t get as much attention as Ethereum or Solana. But look at the data on USDT, the world’s most widely used stablecoin — and Tron is everywhere.

Originally launched with a focus on decentralized content and entertainment, Tron’s primary real-world usage today is as a low-cost network for stablecoin transfers. In many parts of the world, especially in regions where access to traditional banking is limited, it has become a popular choice for everyday payments and remittances — money sent home by people working abroad. Low fees and fast transaction times make it practical for smaller transfers that would be expensive on other networks.

Tron’s governance is relatively centralized, with a small number of elected validators called Super Representatives controlling the network. TRX, like other altcoins, carries price volatility, and the network’s heavy reliance on stablecoin traffic means a shift in stablecoin trends could significantly affect its usage.

Most of the altcoins so far were built to solve a technical or financial problem. Dogecoin is the exception — it was built for fun, and its story only makes sense once you understand the memecoin category it started.

Dogecoin (DOGE)

In 2013, two software engineers built a cryptocurrency in a few hours as a joke. They based it on a popular internet meme featuring a Shiba Inu dog. They called it Dogecoin.

It became something much bigger. Dogecoin is the original memecoin — a category of coins that derive most of their value from community enthusiasm and cultural relevance rather than technical innovation. Technologically, Dogecoin is modest — essentially a modified version of an early Bitcoin-derived project called Litecoin. What made it notable was something else entirely: its community and cultural impact. It demonstrated that in crypto, attention and community engagement can drive value independently of technical merit.

High-profile endorsements — most notably from Elon Musk, whose posts on social media repeatedly sent the price surging — have caused dramatic price movements with no connection to any change in the underlying technology.

Dogecoin has no supply cap, meaning new coins are created indefinitely, which creates constant inflationary pressure. Its price movements are driven by social media sentiment, not fundamental development. That makes it one of the most unpredictable assets in crypto. If you are considering any memecoin, treat it as a high-risk, speculative position — never invest more than you can afford to lose entirely.

Dogecoin shows that in crypto, community and culture can matter as much as technology. Cardano sits at the opposite end of that spectrum: it is one of the most technically deliberate projects in the space, and it approaches blockchain development in a way that could hardly be more different.

Cardano (ADA)

Cardano does everything deliberately. That is a design philosophy.

Founded in 2017 by one of Ethereum’s co-founders, Cardano is built on peer-reviewed academic research. Every technical design is published and reviewed by independent researchers before being implemented. It uses a proof-of-stake consensus mechanism and has focused on formal verification — a process that mathematically proves that code behaves as intended. The project has also invested significantly in developing markets, particularly in Africa, where it has pursued partnerships related to digital identity and education records.

The trade-off is speed of development. Cardano’s careful approach means that features often arrive later than on competing platforms. Its smart contract ecosystem is smaller and less active than Ethereum’s or Solana’s. ADA’s value, like all altcoins, can fluctuate significantly, and slower ecosystem growth means adoption is not guaranteed despite the project’s technical foundation.

Secondary Categories

Beyond the seven coins mentioned above, the altcoin landscape includes thousands of projects across various categories. Here is a closer look at the ones worth knowing.

Alternative Layer 1 Platforms

Ethereum and Solana have the largest ecosystems, but several other blockchains are competing for the same ground.

Avalanche (AVAX) uses a unique consensus mechanism designed for high speed and allows developers to create custom, application-specific blockchains.

Polkadot (DOT) focuses on interoperability — the ability for different blockchains to communicate and share data with one another.

Near Protocol (NEAR) emphasizes developer experience and usability, aiming to make it easier to build and use decentralized applications.

And TON, originally developed for Telegram’s massive user base, is designed to bring blockchain features directly into the messaging experience. Each takes a different technical approach, but all face the same core challenge: building enough developer and user activity to compete with established platforms like Ethereum and Solana.

Payment Coins

Before smart contract platforms existed, most altcoins had a simpler ambition: just be better cash.

Bitcoin Cash (BCH) was created in 2017 when a group of developers separated from Bitcoin’s main chain — an event known as a hard fork, which means a permanent split in a blockchain’s history that creates two separate networks. The disagreement was about how to handle growing transaction volumes: Bitcoin prioritized security and decentralization, while Bitcoin Cash chose larger blocks to fit more transactions.

Litecoin (LTC), launched in 2011, is one of the oldest altcoins and was designed to be a lighter, faster version of Bitcoin. Both serve a similar purpose — simple, fast transfers — but face competition from newer and faster platforms.

Stablecoins

Stablecoins take a different approach to the same problem: instead of moving faster, they remove the price risk entirely. That makes them fundamentally different from everything else in this article — which is why USDT and USDC didn't appear in the major altcoins list above.

USDT — also known as Tether — and USDC are both pegged to the US dollar, meaning each token is intended to always be worth approximately one dollar. They achieve this by holding reserves of cash, government bonds, or other assets to back each token in circulation.

What makes stablecoins different from other altcoins is their purpose. Most cryptocurrencies are speculative — people buy them hoping the price will rise. Stablecoins exist to provide stability. Traders use them to move in and out of volatile positions without converting back to traditional bank money. In many countries, they also function as accessible dollar-denominated savings for people who may not have easy access to the US banking system.

USDT is the larger of the two by market share and is widely used across virtually every major exchange and blockchain. USDC is generally seen as more transparent about its reserves and regulatory compliance. Both carry their own risks — they depend on the issuers maintaining adequate reserves, and regulatory changes in any country could affect how they operate.

DeFi Protocols

Traditional finance has banks, brokerages, and lenders. DeFi replaces all of them with code.

Uniswap (UNI) is a decentralized exchange — a platform where you can trade tokens directly from your wallet without a centralized company processing the transaction. It uses automated liquidity pools, which are shared pools of tokens that facilitate trading, instead of matching individual buyers with sellers.

Aave (AAVE) is a lending and borrowing protocol where users can deposit assets to earn interest or borrow against their holdings. Just as Uniswap, Aave runs on smart contracts — meaning everything is automated.

DeFi protocols carry specific risks beyond price volatility. Smart contract bugs can lead to losses, and the interfaces are often less forgiving than standard apps — small mistakes can be costly and hard to reverse. If you're considering using a DeFi platform, research it thoroughly before depositing anything.

Infrastructure Tokens

Not every crypto project is trying to be money or an app platform. Some are building the plumbing.

Chainlink (LINK) is the most prominent example of infrastructure in crypto. It runs a decentralized network of oracles — services that feed real-world data into blockchains. This matters because smart contracts are sealed environments: they can execute logic, but they can't look outside their own network. An oracle is what bridges that gap. Without it, a DeFi lending protocol couldn't check an asset's price, and an insurance contract couldn't access weather data. Chainlink provides that bridge — and that's what makes it infrastructure rather than just another DeFi token.

Memecoins

Dogecoin started the category. What followed is harder to describe with a straight face — but it is also one of the biggest drivers of trading volume in crypto. The category has grown well beyond Dogecoin.

Shiba Inu (SHIB) launched as a self-described 'Dogecoin killer' and built a large community along with its own decentralized exchange.

PEPE, based on the Pepe the Frog internet meme, became one of the most traded tokens of 2023 despite having no utility or development roadmap.

SPX6900 is a more recent example from a newer wave — tokens created and traded purely on speculation and internet culture, with no pretense of anything else.

⚠️ WARNING: Memecoins are among the riskiest assets in all of crypto. Most lose the majority of their value over time. They are driven almost entirely by social media attention and hype, not by technology or real-world usage. Treat any memecoin position as money you are prepared to lose completely.

FAQ

What is the difference between Bitcoin and an altcoin?

Bitcoin is the original cryptocurrency, designed primarily as a decentralized digital payment system. An altcoin is any cryptocurrency other than Bitcoin. Some altcoins improve on Bitcoin’s design, while others do entirely different things — like running applications or providing stable-value tokens.

Are altcoins a good investment?

That depends entirely on the specific altcoin, your financial situation, and your risk tolerance. Some altcoins have produced strong returns over certain periods, but many have also lost most or all of their value. Past performance does not guarantee future results. Never invest more than you can afford to lose.

What is the safest altcoin?

No cryptocurrency is entirely safe. Stablecoins are designed to maintain a steady price, but they still carry risks related to their issuers and regulation. Among other altcoins, larger and more established projects like Ethereum generally carry less risk than smaller or newer ones — but “less risk” does not mean “no risk.”

Why are there so many altcoins?

Creating a new cryptocurrency is relatively easy from a technical standpoint. Different teams have launched altcoins to address different goals — faster payments, programmable contracts, stable value, and many others. The low barrier to entry also means that many altcoins are created with little long-term viability.

What is a memecoin?

A memecoin is a cryptocurrency that draws its value primarily from community hype and internet culture rather than from technology or real-world utility. Dogecoin is the original example. Memecoins are highly speculative and are among the riskiest assets in the crypto market.