Web3 SDKs

8 Best Web3 SDKs in 2026

Eight SDKs for adding wallets, login, onchain data and payments to an app. Free tiers and prices link to each provider's page, checked Sep 26, 2026.

By DappAtlas EditorialUpdated Oct 1, 2026 · 4 min read

8 picks · 5 criteria · every fee linked to its source

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thirdweb's free tier includes 1,000 user wallets, 1,000 sponsored transactions and 1M RPC requests; its Growth plan is $99 a month. Web3 SDKs range from all-in-one kits like thirdweb to single-job tools for login, data or wallet connection. This list ranks eight by coverage, free tier and entry price.

Quick answer

thirdweb is the best all-in-one web3 SDK: wallets, gas sponsorship, RPC and contracts in one kit with a free tier of 1,000 wallets. Use Privy or Dynamic if you only need login and embedded wallets, and Alchemy if RPC and data APIs matter most.

01thirdweb: Best all-in-one SDK
02Alchemy: best for RPC and data
03Privy: best for embedded login
04Dynamic: best for external wallets
05MetaMask Embedded Wallets: Cheapest paid wallet tier

The 8 best Web3 SDKs

thirdweb

Best all-in-one SDK

thirdweb bundles user and server wallets, gas sponsorship, RPC, a bridge and indexed data. The free tier includes 1,000 user wallets and 1M RPC requests; Growth is $99 a month.

Chains: EVM networks
Platforms: Web, API, SDK
Pricing: Growth $99/mo; Scale $499/mo; Pro from $1,499/mo
Free plan: No free plan listed; every plan includes 1,000 user wallets, 1,000 sponsored transactions, 1M RPC requests and 1 GB storage
Chains: 2,500+ for RPC and server wallets; 145+ for gas sponsorship

Pros

Every plan includes 1,000 user wallets, 1,000 sponsored transactions and 1M RPC requests
One SDK covers wallets, contracts, RPC and payments
RPC and server wallets listed for 2,500+ chains

Cons

Gas sponsorship covers 145+ chains, far fewer than its RPC coverage
Pro plan starts at $1,499/mo

Skip it if you need gas sponsorship on a niche chain: it covers 145+ chains, fewer than its RPC coverage.

Visit site ↗Full profile

Alchemy

Best for RPC and data

Alchemy's SDKs sit on its RPC and data APIs for 100+ blockchains, with 30M free compute units a month.

Chains: Ethereum, EVM networks and Solana
Platforms: Web, API
Pricing: Pay as You Go: $0.525 per 1M compute units
Free plan: 30M compute units per month, 25 requests per second, 5 apps
Chains: 100+ blockchains

Pros

Free tier includes 30M compute units per month at 25 requests per second
Pay as You Go starts at 300 requests per second with 30 apps
Covers 100+ blockchains, with all mainnets and testnets on the free plan

Cons

Usage is billed in compute units and each method has a different cost, so bills are harder to predict
Free tier is limited to 5 apps and 5 webhooks
Signed SLAs are only on the Enterprise plan

Skip it if you want login and embedded wallets out of the box without extra setup.

Visit site ↗Full profile

Privy

Best for embedded login

Privy, owned by Stripe, adds login and embedded wallets. The free plan covers up to 500 monthly active users; Core is $299 a month.

Chains: EVM and Solana
Platforms: Web, iOS, Android, API
Pricing: Core $299/month (500 to 2,499 MAU); Scale $499/month (2,500 to 9,999 MAU)
Free plan: Up to 500 MAU, 50K signatures and $1M volume per month
Company: Stripe (acquisition announced June 11, 2025)

Pros

Free plan covers up to 500 MAU, 50K signatures and $1M transaction volume per month
Wallet connectors for EVM and Solana
Login by email, SMS, social accounts and passkeys

Cons

Paid plans start at $299 per month for up to 2,500 MAU
Webhooks, SSO and dedicated support need an Enterprise contract
Owned by Stripe since 2025, so the roadmap depends on a payments company

Skip it if you expect more than 500 MAUs on a small budget: the next plan costs $299 a month.

Visit site ↗Full profile

Dynamic

Best for external wallets

Dynamic combines login, embedded wallets and connections to 800+ external wallets. It is free up to 1,000 MAUs and was acquired by Fireblocks in October 2025.

Chains: Multichain
Platforms: Web, SDK
Free plan: Up to 1,000 monthly active users
Pricing: $249/mo for 1,000 to 5,000 MAUs; $0.05 per MAU above 5,000; Enterprise custom
Company: Fireblocks (acquired October 2025)

Pros

Free up to 1,000 monthly active users
Connects 800+ external wallets alongside embedded wallets
Owned by Fireblocks since October 2025

Cons

Paid tier jumps to $249/mo above 1,000 MAUs
Each MAU above 5,000 adds $0.05

Skip it if you pass 1,000 MAUs on a tight budget: the next tier costs $249 a month.

Visit site ↗Full profile

MetaMask Embedded Wallets

Cheapest paid wallet tier

Web3Auth, now part of Consensys, is free for 1,000 monthly active wallets. Growth costs $69 a month for 3,000.

Chains: EVM chains, Solana and Bitcoin
Platforms: Web, iOS, Android, SDK
Pricing: Base free; Growth $69/month; Scale $399/month; Enterprise custom. Extra monthly active wallets $0.050 to $0.040 each
Free plan: Base plan: 1,000 monthly active wallets free, then $0.050 per additional wallet
Company: Consensys Software Inc. (acquired Web3Auth)

Pros

Free Base plan includes 1,000 monthly active wallets
Chain-agnostic: EVM networks, Solana and Bitcoin
Web SDK source is public on GitHub

Cons

Whitelabeled login UI starts at the $69/month Growth plan
MPC TSS for web and mobile is Enterprise-only
Farcaster login is deprecated in the current SDK

Skip it if you need features beyond social login and embedded wallets, such as RPC or data.

Visit site ↗Full profile

WalletConnect

Best for wallet connection

WalletConnect links apps to 700+ wallets across EVM, Solana and Bitcoin. Reown's Starter plan is free for 500 MAUs; Pro costs $890 a year.

Chains: EVM chains, Solana, Bitcoin, Cosmos, Polkadot and more
Platforms: SDK, Web, iOS, Android
Launched: 2018
Token: WCT
Pricing: Starter $0 (500 MAUs); Pro $890 per year

Pros

Chain agnostic: EVM, Solana, Bitcoin, Cosmos, Polkadot
Reown Starter plan is $0 with 500 MAUs
Supported by 700+ wallets

Cons

Reown Pro plan costs $890 per year
Two brands (WalletConnect and Reown) can confuse builders
Network is permissioned, per its own docs

Skip it if your users do not have a wallet yet: pair it with an embedded wallet SDK.

Visit site ↗Full profile

Crossmint

Best for payments and ramps

Crossmint offers embedded wallets, stablecoin on-ramps and off-ramps, payouts and token checkout across 50+ blockchains. 1,000 monthly active wallets are free.

Platforms: Web, API, SDK
Free plan: 1,000 monthly active wallets, up to 2,000 transactions
Pricing: Wallets: overage from $0.02 to $0.025 per monthly active wallet (page lists both); tokenization from $0.01 per action; ramp fees per transaction, not published
Chains: 50+ blockchains
US availability: Onramp covers all US states, including New York

Pros

1,000 monthly active wallets free
Offers both custodial and non-custodial wallets
Tokenization priced from $0.01 per action

Cons

On-ramp and off-ramp fees are not published
Gas sponsorship on the developer plan is capped at $50
Developer tokenization rate limit is 100 per hour

Skip it if you need published ramp fees: Crossmint does not list them.

Visit site ↗Full profile

Moralis

Best for data-only apps

Moralis covers Wallet, Token, NFT, Price, DeFi and Streams APIs across EVM, Solana and Bitcoin.

Chains: EVM networks, Solana and Bitcoin
Platforms: Web, API
Pricing: Starter $149/mo, Pro $249/mo, Business $749/mo (billed annually); Enterprise custom
Free plan: No free plan listed
Chains: 30+ chains (EVM, Solana, Bitcoin)

Pros

Wallet, Token, NFT, Price, DeFi and Streams APIs on every plan
Covers EVM chains, Solana and Bitcoin in one API
Business plan removes the attribution requirement

Cons

No free plan on the pricing page
Starter at $149/mo (billed annually) is a high entry price for a data API
Attribution required below the Business plan

Skip it if you are prototyping for free: Moralis lists no free plan and starts at $149 a month billed annually.

Visit site ↗Full profile

Not on this list

web3.js: Sunset: ChainSafe archived the web3.js libraries on March 4, 2025, so they get no more updates. It points developers to ethers.js and viem.

Web3 SDKs compared

Select a name to jump to its review.

Name	Best for	US availability	Fees	Pricing	Free plan
thirdweb	Wallets, RPC and contracts	Available: terms restrict only sanctioned jurisdictions	Bridge swaps 0.3%; sponsored gas 2.5% surcharge on mainnets; token launches 0.5% protocol + 2% convenience fee	Growth $99/mo; Scale $499/mo; Pro from $1,499/mo	No free plan listed; every plan includes 1,000 user wallets, 1,000 sponsored transactions, 1M RPC requests and 1 GB storage
Alchemy	Node access plus data APIs	Available: terms restrict only sanctioned jurisdictions	Billed in compute units per method: eth_blockNumber 10 CU, eth_call 26 CU, eth_getLogs 60 CU	Pay as You Go: $0.525 per 1M compute units	30M compute units per month, 25 requests per second, 5 apps
Privy	Consumer apps with email login	Available: terms name no country restrictions	Not verified	Core $299/month (500 to 2,499 MAU); Scale $499/month (2,500 to 9,999 MAU)	Up to 500 MAU, 50K signatures and $1M volume per month
Dynamic	Apps with many wallet users	Available: terms restrict only sanctioned jurisdictions	Not verified	$249/mo for 1,000 to 5,000 MAUs; $0.05 per MAU above 5,000; Enterprise custom	Up to 1,000 monthly active users
MetaMask Embedded Wallets	Social login on a budget	Available: terms restrict only sanctioned jurisdictions	Per monthly active wallet above plan quota: $0.050 (Base), $0.045 (Growth), $0.040 (Scale)	Base free; Growth $69/month; Scale $399/month; Enterprise custom. Extra monthly active wallets $0.050 to $0.040 each	Base plan: 1,000 monthly active wallets free, then $0.050 per additional wallet
WalletConnect	Connecting existing wallets	Available: terms restrict only sanctioned jurisdictions	Not verified	Starter $0 (500 MAUs); Pro $890 per year	Starter: 1 project, 500 MAUs, 2.5M RPC calls
Crossmint	Stablecoin and checkout flows	Onramp covers all US states, including New York	Checkout and onramp: per-transaction convenience fee usually paid by users; rate depends on plan and volume	Wallets: overage from $0.02 to $0.025 per monthly active wallet (page lists both); tokenization from $0.01 per action; ramp fees per transaction, not published	1,000 monthly active wallets, up to 2,000 transactions
Moralis	Token, NFT and wallet data	Available: terms name no country restrictions	Overage per 1M CUs: $11.25 Starter, $5 Pro, $4 Business; Streams 10 CUs per confirmed record	Starter $149/mo, Pro $249/mo, Business $749/mo (billed annually); Enterprise custom	No free plan listed

“Not verified” means we could not confirm the value on the project’s own pages.

How we rank Web3 SDKs

01Coverage: wallets, login, RPC, data or payments.
02Free tier: published free allowance.
03Entry price: first paid plan on the pricing page.
04Chains: chains listed by the provider.
05Ownership: who stands behind the SDK, from its own page.

No project paid to be listed or ranked. Full rules: methodology.

What we did not test

We did not open accounts, deposit money or place trades with these services.
We did not audit smart contracts, reserves or security claims ourselves; we report what the project and its auditors publish.
Fees, limits and availability change; the list date shows when we last checked them.

Rubric last updated Oct 1, 2026. Crypto assets are not insured by the FDIC or SIPC, and you can lose all the money you put in. This page is educational content, not financial advice.

How to choose

Decide what the SDK must own

If you want one vendor, thirdweb covers wallets, RPC and contracts. If you already have RPC, a login SDK such as Privy, Dynamic or Web3Auth is enough.

Price by monthly active users

Login SDKs bill by MAU: free up to 500 on Privy, 1,000 on Dynamic and Web3Auth. Model your user count at launch and six months later.

Keep external wallets working

WalletConnect or Dynamic lets users who already have MetaMask or Phantom sign in without a new wallet.

Check ownership changes

Privy is owned by Stripe, Dynamic by Fireblocks and Web3Auth by Consensys. Ownership affects roadmap and pricing.

Who should skip all of these

Smart contract authors looking for a compiler and test framework: see our smart contract tools list.
Apps that only need a single RPC endpoint: an RPC provider is simpler.

Which one fits you?

Solo builder shipping fastthirdweb: wallets, RPC and contracts from one free tier.Jump ↓Consumer app with email loginPrivy: embedded wallets free for 500 MAUs.Jump ↓App for existing crypto usersWalletConnect: connects 700+ wallets.Jump ↓Stablecoin checkoutCrossmint: ramps, payouts and wallets in one API.Jump ↓

Bottom line

Start with thirdweb if you want one kit; pick Privy, Dynamic or Web3Auth if login is the only gap.

Add WalletConnect whichever you choose, so users with existing wallets can connect.

Educational content, not financial advice. Crypto assets are volatile; do your own research.

FAQ

What is the most complete web3 SDK?

thirdweb covers the most jobs in one kit: user and server wallets, gas sponsorship, RPC, a bridge and indexed data.

Which wallet login SDK is cheapest?

Web3Auth's paid Growth plan is $69 a month for 3,000 monthly active wallets. Dynamic's next tier is $249 and Privy's is $299.

Do I still need WalletConnect with an embedded wallet?

Yes if some users already have wallets such as MetaMask or Phantom. Embedded wallets serve new users; WalletConnect serves existing ones.

Who owns Privy, Dynamic and Web3Auth?

Stripe announced its Privy acquisition on June 11, 2025. Fireblocks acquired Dynamic in October 2025. Web3Auth was acquired by Consensys.

Privy or Dynamic: which is cheaper?

Dynamic is cheaper to start: it is free up to 1,000 monthly active users and costs $249 a month from 1,000 to 5,000. Privy is free up to 500 MAUs, then $299 a month for 500 to 2,499 and $499 for 2,500 to 9,999. Above 5,000 MAUs Dynamic adds $0.05 per user; above 10,000 Privy moves to a $2,000 base fee plus $0.05 per MAU.

Sources

What changed in this list

2026-09-26First version: 8 web3 SDKs, free tiers and entry prices checked on each provider's page.

2026-10-01Added a Privy vs Dynamic pricing FAQ and web3.js, archived on March 4, 2025, to Not on this list.

Who made this page

Written by

DappAtlas Editorial

Editorial team

Compiles and updates the lists on DappAtlas. Facts come from primary sources: each project’s own pages, protocol docs and standards. No project pays to be mentioned.

Lists from DappAtlas Editorial

Fact check

Checked against 13 sources

Last check: Oct 1, 2026

A value we could not confirm on the project’s own pages is marked “Not verified” instead of estimated.

How we review

How this page works

Sources: thirdweb: Pricing, Alchemy: Pricing, Privy: Pricing. Data as of Oct 1, 2026.

How we review

Not affiliated with any project listed. Educational content, not financial advice.

8 Best Web3 SDKs in 2026

Quick answer

The 8 best Web3 SDKs

Web3 SDKs compared

How we rank Web3 SDKs

How to choose

Decide what the SDK must own

Price by monthly active users

Keep external wallets working

Check ownership changes

Who should skip all of these

Which one fits you?

Bottom line

FAQ

What is the most complete web3 SDK?

Which wallet login SDK is cheapest?

Do I still need WalletConnect with an embedded wallet?

Who owns Privy, Dynamic and Web3Auth?

Privy or Dynamic: which is cheaper?

Further reading

Related reading

Sources

What changed in this list

Who made this page

How this page works