What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
The five services documented here as prominent DeFi swap aggregators in 2021 are 1inch, Matcha, ParaSwap, OpenOcean and KyberSwap. This is a historically visible set, not a verified ranking: the available sources do not provide a consistent, independent comparison of all five across the year.
Here, “DeFi aggregator” means a decentralized-exchange (DEX) swap aggregator. It searches liquidity sources and selects or builds a route for exchanging tokens. That is different from a yield aggregator, which manages deposits in pursuit of returns.
What a DEX aggregator does
A DEX aggregator checks available token-swap routes across decentralized exchanges and liquidity pools. Depending on its routing design, it may direct a swap through one venue or split it among several. The aim is to find a suitable execution route for that particular trade; aggregation does not guarantee a better price or successful execution.
In October 2021, KyberSwap described its dynamic routing as finding routes and splitting trades across multiple DEXs. That is the service’s own product description, not an independent test showing it consistently outperformed other aggregators. KyberSwap’s October 2021 announcement
Free tools Windows power users keep installed
One-click scans. No signup required.
#1 Best Overall
- Proven security at scale: Over 9 years and millions of cards issued with no known remote hacks, while military‑grade EAL6+ security keeps your private keys locked inside the chip. Your cryptocurrencies stay strongly protected from online attackers.
- Tap once to manage your entire crypto wallet across 90 blockchains - no USB cables or Bluetooth, no batteries, no setup. Access 14,100+ coins & tokens, DeFi, NFTs, and staking instantly from your phone
- Smart backup: Use your second Tangem Wallet as your Backup keys with end‑to‑end encryption; no more papers, pictures. If one card is lost, the remaining can still restore full access, with an optional seed phrase available for advanced users.
- Engineered to last up to 25 years: Waterproof (IP69K), shockproof and tested for extreme temperatures from −25°C to 50°C. A durable cold wallet with long‑term protection and independently audited security.
- Trusted by 6 million users worldwide - buy, sell, swap, stake, and spend cryptocurrency directly. The secure offline storage wallet designed for how people actually use crypto wallets
Five visible services in 2021
The sources identify these services in 2021, but do not establish a reliable order of size or performance. The Zilliqa ecosystem report’s Q4 snapshot references DeFiLlama and includes aggregator and DEX context; it is not a full-year league table. Zilliqa Ecosystem Report Q4 & Annual
1inch
1inch was a prominent service in the dated material. In an August 31, 2021 article, the company said DEX aggregator share of DEX volume had risen from 7.5% to 15% since the beginning of that year. This is a figure published by 1inch, not an independently verified market census. The article also made favorable claims about its own routing coverage and costs; those claims should be read as company statements, not neutral comparisons. 1inch’s August 2021 article
Rank #2
- Effortlessly build your crypto portfolio via the all in one Ledger Wallet app: buy, sell, send, receive, swap, stake and more across popular blockchains. 15,000+ coins & tokens in a single dashboard. Keep a close eye on the market. Compare service providers. Track performance. Get timely alerts. Build your portfolio with confidence.
- Effortlessly build your crypto portfolio via the all in one Ledger Wallet app: buy, sell, send, receive, swap, stake and more across popular blockchains. 15,000+ coins & tokens in a single dashboard. Keep a close eye on the market. Compare service providers. Track performance. Get timely alerts. Build your portfolio with confidence.
- Enjoy Bluetooth connectivity, iOS access, and hours of battery use with this mobile-first, secure backup signer. Freedom you can depend on.
- Genuine Check: confirm your signer is authentic during setup with the Ledger Wallet app.
- Protect your signer: keep it in mint condition at all times with a bespoke Pod or Case to avoid scratches and everyday wear and tear.
Matcha
Matcha is a user-facing swap service. In an October 2020 announcement, 0x described Matcha as using its 0x Swap API under the hood. The API is the underlying product; Matcha is the interface through which users access swaps. 0x’s announcement of Swap API v1
ParaSwap
ParaSwap appears alongside 1inch and Matcha in 1inch’s 2021 discussion of MetaMask integration, and is also named in the Zilliqa report’s Q4 context. These sources establish historical visibility, not present-day integration, branding or availability.
Rank #3
- 100% Offline Crypto Wallet with Air-Gapped Tech: The ELLIPAL Titan 2.0 features fully air-gapped technology, making it a 100% offline crypto wallet that is completely isolated from the internet. With absolutely no WiFi, no Bluetooth, and no network cables, it ensures your private keys always remain safe and sound. You can create and recover your accounts entirely offline, signing transactions securely via simple QR code scans. Since this ultra-secure cold wallet never connects to any network, your cryptocurrency will never suffer from any network-level cyberattacks.
- Clear Signing Transparency with Your Hardware Wallet: Take absolute control of your funds with a massive 4-inch Touchscreen. The ELLIPAL Titan 2.0 lays out every single transaction in plain, readable words: exactly who you are paying, how much you are sending, and what smart contracts you are authorizing. It double-checks every detail between your phone and the crypto hardware wallet before anything is signed. This completely eliminates blind signing, giving you absolute peace of mind with your trusted hardware wallet.
- Multi-Asset Crypto Cold Wallet: Manage all your portfolio effortlessly within a single crypto cold wallet. Pair the Titan 2.0 with the intuitive ELLIPAL App to buy, sell, swap, send, and earn rewards across 45+ coins and more than 10,000 tokens all on one platform. It is a seamless and convenient crypto wallet for your digital asset management.
- 8 Years of Zero Breaches & Trusted Secure Crypto Wallet: Invest in a highly recommended, secure crypto wallet backed by an unblemished 8-year track record of zero security breaches. Proudly Forbes Recommended and trusted by over 1 million users across more than 140 countries, this robust cold storage wallet provides enterprise-grade physical and digital security, ensuring your life savings are perfectly protected against evolving Web3 threats and physical tampering.
- Up to 5 Accounts in One Cold Storage Hardware Wallet: Maximize your storage efficiency with a versatile cold storage hardware wallet that supports up to 5 completely separate accounts on a single device. You can perfectly isolate and organize your daily spending, long-term savings, active trading, and even family funds without the need for multiple devices. It is the ultimate companion for your long-term crypto journey.
OpenOcean
OpenOcean is named among the services in the Q4 2021 report. That is evidence of its inclusion in the period’s aggregator landscape, not proof of an exact rank for the quarter or the full year.
KyberSwap
KyberSwap appears in the Q4 report and described its dynamic trade routing in an October 2021 post. The post explains the company’s routing approach; it does not establish a measured performance advantage over the other services.
Rank #4
- Proven security at scale: Over 9 years and millions of cards issued with no known remote hacks, while military‑grade EAL6+ security keeps your private keys locked inside the chip. Your cryptocurrencies stay strongly protected from online attackers.
- Tap once to manage your entire crypto wallet across 90 blockchains - no USB cables or Bluetooth, no batteries, no setup. Access 14,100+ coins & tokens, DeFi, NFTs, and staking instantly from your phone
- Smart backup: Use your second Tangem Wallet as your Backup keys with end‑to‑end encryption; no more papers, pictures. If one card is lost, the remaining can still restore full access, with an optional seed phrase available for advanced users.
- Engineered to last up to 25 years: Waterproof (IP69K), shockproof and tested for extreme temperatures from −25°C to 50°C. A durable cold wallet with long‑term protection and independently audited security.
- Trusted by 6 million users worldwide (4.9 App Store, 4.8 Google Play) - buy, sell, swap, stake, and spend cryptocurrency directly. The secure offline storage wallet designed for how people actually use crypto wallets
What the 2021 comparisons can—and cannot—show
There is no shared, independently verified 2021 scorecard in these sources that compares the five services across the same chains, token pairs, trade sizes, slippage settings and network fees. A Q4 snapshot cannot by itself establish who led throughout the year, and a company’s own routing claims cannot substitute for a controlled comparison.
In its August 2021 article, 1inch said aggregators such as 1inch and Matcha could offer better swap rates than trading directly on Uniswap, SushiSwap and other DEXs. That is a claim made by 1inch, not a conclusion from a neutral, controlled study. The same article described MetaMask as an “aggregator of aggregators” connecting users to 1inch, ParaSwap and Matcha, and stated a 0.875% per-swap fee at the time. Both details are specific to that 2021 article and should not be treated as current integration or fee terms. 1inch’s August 2021 article
PC Slower Than It Used to Be?
A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Crashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteBest Value
- READY IN 3 MINUTES – Set up your ELLIPAL X Card crypto wallet on the offline Starter device, then tap to the ELLIPAL mobile App and start using it. This 100% offline crypto wallet is a no battery crypto wallet with no charging, no firmware updates, and no complicated setup.
- TURN ANY WALLET INTO A CARD – Already have a wallet? Import your recovery phrase from MetaMask, Trust Wallet, Ledger, Trezor, or any compatible seed phrase wallet. X Card works as a backup wallet and physical twin of your existing bitcoin wallet, ethereum wallet, NFT wallet, or altcoin wallet — no transfers, no new accounts, no starting over.
- BUILT ON AN EAL6+ SECURE CHIP – Designed as a secure crypto wallet and private key wallet, X Card generates and stores your private keys inside the EAL6+ secure chip. Your keys never reach your phone, the App, USB, Bluetooth, or the internet, making it a true no bluetooth hardware wallet and no USB crypto wallet.
- ONE APP, EVERYTHING CRYPTO – Manage more with one cold storage wallet. Buy, sell, swap, send, spend, and earn across 45+ blockchains and 10,000+ tokens. Use X Card as your cryptocurrency wallet, coins and tokens wallet, DeFi wallet, and staking wallet for everyday crypto management.
- TAP TO CRYPTO – Carry your crypto cold wallet on a card and secure every transaction with one NFC tap. ELLIPAL X Card combines the simplicity of a crypto wallet with the protection of a cold storage hardware wallet.
How to assess an aggregator for a particular swap
A service’s name or historical visibility does not tell you which route is best for your trade. Compare the actual quote and execution conditions for the chain, pair and trade size you intend to use.
- Chain and pair: Check that the service supports the network and both tokens you want to exchange.
- Quoted output: Compare the amount you are expected to receive after trading fees, not just the displayed exchange rate.
- Network cost: Include estimated gas or other network fees; a better token quote can be offset by a more expensive transaction.
- Price impact and slippage: Review the expected price impact and the slippage tolerance. A quote may change before execution, and a transaction can fail if its limits are exceeded.
- Route and execution: Check whether the route uses one venue or several, and consider execution reliability for the trade you are placing.
- Service fees: Look for any separate service fee and confirm its current terms rather than relying on a fee mentioned in a 2021 article.
These are decision criteria, not findings that one of the five services won any particular category. Availability, fees, jurisdictional access and safety today are not established by the cited 2021 material.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
