ZeroDev built its reputation as the developer-friendly smart account toolkit. The Kernel account — modular, ERC-7579 compliant, with session keys and passkey validators baked in — became the go-to smart account implementation for teams that wanted account abstraction without rolling their own. Bundler, paymaster, and SDK in one package: ZeroDev made ERC-4337 approachable.
But in 2026, "smart account SDK" is no longer the full picture. Developers building complete wallet experiences need authentication, embedded wallet UX, server-side automation for AI agents, policy-controlled signing, and open-source infrastructure to eliminate vendor lock-in. ZeroDev covers the smart account layer. The rest, you build yourself.
That gap — plus the consolidation reshaping the market (ZeroDev→Offchain Labs/Arbitrum, Privy→Stripe, Dynamic→Fireblocks) — has developers evaluating ZeroDev alternatives that handle the full wallet lifecycle.
Why Developers Look for ZeroDev Alternatives
- Smart account SDK only: ZeroDev provides the Kernel account, bundler, and paymaster but no authentication or embedded wallet infrastructure
- No embedded wallets: You need a separate provider (Privy, Magic, Dynamic) for user auth and key management, then wire it to ZeroDev's smart account layer
- No backend wallets: ZeroDev has no server-side wallet product for AI agents, automated payments, or backend-triggered transactions
- Proprietary infrastructure: The bundler and paymaster are ZeroDev's managed service — not open-source, not self-hostable
- Arbitrum alignment post-acquisition: ZeroDev is now owned by Offchain Labs, raising multi-chain neutrality concerns for teams not building on Arbitrum
- Multi-vendor complexity: A production-ready app still requires ZeroDev + separate auth provider + bundler failover — three vendors to maintain
What to Look for in a ZeroDev Alternative
| Criteria | Why It Matters |
|---|---|
| Full Wallet Stack | Auth + smart accounts + paymasters + session keys in one platform eliminates multi-vendor complexity |
| Native Smart Accounts | Built-in ERC-4337/7702 without third-party glue reduces failure points |
| Open Source | Self-hostable infrastructure gives you sovereignty and an escape hatch |
| Backend Wallets | Server-side signing for AI agents and automated workflows |
| Session Keys | Scoped, time-limited permissions for autonomous transactions |
| Chain Neutrality | Multi-chain support without ecosystem lock-in |
| Signing Performance | Sub-200ms for real-time apps and high-frequency use cases |
What are the Best ZeroDev Alternatives?
The best ZeroDev alternatives in 2026 are Openfort, Biconomy, and Safe.
- Openfort is the top choice for teams that want a complete, open-source wallet stack that replaces ZeroDev and the separate auth/wallet provider you'd need to add on top
- Biconomy (Nexus account) is a strong modular smart account alternative with solid paymaster tooling and good multi-chain coverage
- Safe is the gold standard for audited, battle-tested smart account infrastructure — required reading for any team where security is paramount
- Pimlico is the specialist pick for teams that want the best standalone bundler/paymaster infrastructure and are building their own account layer with permissionless.js
1. Openfort
Openfort (that's us 👋) is an open-source wallet infrastructure platform that provides a complete wallet stack — authentication, embedded wallets, native smart accounts (ERC-4337 and EIP-7702), built-in paymasters for gasless transactions, session keys, and TEE backend wallets for server-side automation — all in one unified platform.
Where ZeroDev covers the smart account SDK layer, Openfort covers the full stack. Users sign in with email, social, or passkeys. Their wallet is a full smart account from day one. Gas is sponsored via built-in paymasters — no separate bundler vendor required. For server-side automation, TEE backend wallets handle AI agent wallets, automated payments, and backend-triggered workflows with policy-controlled signing.
The key structural difference is infrastructure sovereignty. ZeroDev's bundler and paymaster are managed services — you depend on ZeroDev's infrastructure and cannot audit or self-host it. Openfort's signing infrastructure, OpenSigner, is MIT-licensed and fully self-hostable. Your team can audit the code, run it yourself, and maintain custody of your users' keys without a vendor dependency.
Why Choose Openfort Over ZeroDev
- If you need the complete stack — ZeroDev requires a separate auth/wallet provider; Openfort replaces the entire stack in one platform
- If your app needs server-side wallet automation — AI agents, automated payments, or backend-triggered transactions — ZeroDev has no server wallet product; Openfort has native TEE backend wallets
- If open-source sovereignty matters — Openfort's OpenSigner is MIT-licensed and fully self-hostable; ZeroDev's infrastructure is proprietary
- If multi-vendor complexity is slowing you down — Openfort replaces ZeroDev + auth provider + bundler + paymaster in one platform
- If chain neutrality matters — Openfort supports all EVM chains without Arbitrum alignment
Comparison Table: Openfort vs. ZeroDev
| Feature | Openfort | ZeroDev |
|---|---|---|
| Scope | Full Wallet Stack | Smart Account SDK |
| Signing Speed | 125ms median | Variable (managed infra) |
| Open Source | ✅ OpenSigner (MIT) | ⚠️ Contracts only |
| Smart Accounts | ✅ Native (4337, 7702) | ✅ Kernel (4337, 7702) |
| Gas Sponsorship | ✅ Native Paymasters | ✅ Managed Paymaster |
| Session Keys | ✅ Built-in | ✅ Via Kernel validators |
| Backend Wallets | ✅ TEE Backend Wallets | ❌ Not available |
| Authentication | ✅ Built-in (any OIDC) | ❌ Requires 3rd party |
| Embedded Wallets | ✅ OpenSigner | ❌ Requires 3rd party |
| Self-Hostable | ✅ Yes (OpenSigner) | ⚠️ Contracts only |
| Chain Neutrality | ✅ All EVM | ⚠️ Arbitrum alignment |
| Pricing | Usage-based (per operation) | Tiered (by UserOps volume) |
| Parent Company | Independent | Offchain Labs (Arbitrum) |
Total Cost of Ownership
The real cost of building on ZeroDev becomes apparent when you add up everything you need. A production-ready app requires ZeroDev itself (tiered by UserOps volume), a separate embedded wallet/auth provider like Privy ($299/month) or Dynamic ($249/month), and engineering time to integrate and maintain multiple vendor relationships. Cross-vendor incompatibilities — auth provider key format clashes, bundler rate limits, paymaster policy conflicts — compound debugging costs. Total operational cost easily reaches $400-700+/month before counting engineering overhead.
Openfort's usage-based pricing covers everything: authentication, embedded wallets via OpenSigner, smart accounts, gas sponsorship, session keys, and backend wallets. One vendor, one invoice, one integration to maintain.
Why developers choose Openfort
Teams that outgrow ZeroDev's SDK-only model choose Openfort to get the complete stack — OpenSigner for embedded wallets, TEE backend wallets for AI agent and server-side automation, and built-in paymasters for gasless transactions — without stitching together multiple vendors. The open-source infrastructure and usage-based pricing make it the natural upgrade path for teams that want control and transparency at scale.
2. Biconomy
Biconomy has evolved from its early paymaster-as-a-service roots into a full smart account platform centered on the Nexus account — a modular ERC-7579 smart account designed for high performance and EIP-7702 compatibility. Biconomy's paymaster infrastructure is among the most battle-tested in the space, and its SDK covers gasless transactions, session keys, and bundler tooling.
Compared to ZeroDev's Kernel, Biconomy's Nexus account is newer but claims faster execution via its optimized architecture. Like ZeroDev, Biconomy is smart account infrastructure only — you still need an auth/wallet layer on top.
Why Choose Biconomy Over ZeroDev
- If you want a challenger to Kernel with a more modern account architecture and active EIP-7702 support
- If you have existing Biconomy paymaster integrations and want to consolidate on one smart account provider
- If paymaster tooling quality is paramount — Biconomy's paymaster is among the most feature-complete available
Comparison Table: Biconomy vs. ZeroDev
| Feature | Biconomy | ZeroDev |
|---|---|---|
| Smart Account | Nexus (ERC-7579) | Kernel (ERC-7579) |
| Session Keys | ✅ Built-in | ✅ Via Kernel validators |
| Gas Sponsorship | ✅ Native Paymaster | ✅ Managed Paymaster |
| EIP-7702 | ✅ Supported | ✅ Supported |
| Authentication | ❌ Requires 3rd party | ❌ Requires 3rd party |
| Backend Wallets | ❌ Not available | ❌ Not available |
| Open Source | ⚠️ Contracts only | ⚠️ Contracts only |
| Chain Coverage | Multi-chain EVM | Multi-chain EVM |
Why developers choose Biconomy
Teams choose Biconomy when they want to escape Arbitrum ecosystem alignment (ZeroDev/Offchain Labs) while staying in the modular smart account world. Biconomy's Nexus account and mature paymaster infrastructure are genuine competitors to Kernel. The trade-offs are the same as ZeroDev: no auth, no embedded wallets, no backend wallets — the smart account layer only, requiring multi-vendor assembly for a complete product.
3. Safe
Safe (formerly Gnosis Safe) is the most widely deployed and audited smart account in the ecosystem — more than $100B in assets have been secured by Safe contracts. The Safe Protocol exposes Safe's infrastructure to developers via SDKs, including ERC-4337 support through the SafeAccount implementation.
For teams where security, audit lineage, and institutional adoption matter most, Safe is in a category of its own. Enterprise protocols, treasury management tools, and high-value DeFi applications routinely choose Safe for its audit history and governance track record.
Why Choose Safe Over ZeroDev
- If audit depth and security track record are non-negotiable — Safe has more audits, more deployments, and more institutional trust than any other smart account
- If you're building treasury management, multisig, or enterprise tools where Safe's native multi-owner model is an asset
- If institutional customer procurement requires Safe — many enterprise customers specify Safe in security requirements
- If you want maximum contract stability — Safe contracts are some of the most conservative and stable in the ecosystem
Comparison Table: Safe vs. ZeroDev
| Feature | Safe | ZeroDev |
|---|---|---|
| Smart Account | SafeAccount (4337) | Kernel (4337, 7579) |
| Audit Depth | ✅ Deepest in industry | ✅ Multiple audits |
| Session Keys | ⚠️ Via modules | ✅ Native validators |
| Gas Sponsorship | ✅ Via Safe4337Module | ✅ Native |
| Modularity | ✅ Safe modules | ✅ ERC-7579 plugins |
| Authentication | ❌ Requires 3rd party | ❌ Requires 3rd party |
| Backend Wallets | ⚠️ Safe Multisig APIs | ❌ Not available |
| Open Source | ✅ Fully open source | ⚠️ Contracts only |
Why developers choose Safe
Security-first teams choose Safe for its unmatched audit lineage and $100B+ deployment track record. Compared to ZeroDev's Kernel, Safe's architecture is more conservative — less modular plug-and-play, more battle-hardened and institutionally trusted. The trade-off is developer velocity: Safe's SDK is more complex to integrate than ZeroDev's, and session key support requires module composition. For consumer apps needing fast feature iteration, Kernel or Nexus are easier to move with. For institutional or high-value apps, Safe's security moat is decisive.
4. Pimlico
Pimlico is the specialist infrastructure provider for the account abstraction stack — a best-in-class bundler, paymaster (verifying + ERC-20), and the permissionless.js SDK for building modular account systems. Pimlico is infrastructure-as-a-service, not a smart account implementation: it works with any ERC-4337 account (Kernel, Safe, Nexus, LightAccount, etc.).
For teams that want to choose their own smart account but need the most reliable bundler/paymaster infrastructure available, Pimlico is the top pick. Its free testnet tooling and developer experience have made permissionless.js the de facto standard for account abstraction scripting.
Why Choose Pimlico Over ZeroDev
- If you want to mix and match — use your preferred smart account (Safe, LightAccount, or custom) with Pimlico's bundler/paymaster instead of ZeroDev's all-in-one approach
- If bundler reliability is paramount — Pimlico's infrastructure has become the trusted failover for teams running multi-bundler strategies
- If you want the best developer tooling for prototyping account abstraction flows without commitment to a specific account
Comparison Table: Pimlico vs. ZeroDev
| Feature | Pimlico | ZeroDev |
|---|---|---|
| Scope | Bundler + Paymaster infra | Kernel SDK + infra |
| Smart Account | ❌ Bring your own | ✅ Kernel |
| permissionless.js | ✅ Reference SDK | ❌ |
| Session Keys | ❌ Account-dependent | ✅ Via Kernel |
| Authentication | ❌ Requires 3rd party | ❌ Requires 3rd party |
| Open Source | ✅ permissionless.js | ⚠️ Contracts only |
| Pricing | Volume-based | Tiered UserOps |
Why developers choose Pimlico
Teams choose Pimlico when they want to control the smart account layer themselves (using Safe, LightAccount, or a custom account) but delegate bundler/paymaster infrastructure to a specialist. The permissionless.js SDK is excellent for developers who want a viem-native, vendor-neutral way to interact with any ERC-4337 account. Compared to ZeroDev, Pimlico gives you more flexibility at the cost of the integrated account SDK — you compose your own stack rather than adopting ZeroDev's opinionated Kernel-first approach.
5. Alchemy Account Kit
Alchemy Account Kit bundles Alchemy's aa-sdk, LightAccount (a lean ERC-4337 smart account), and Alchemy's bundler/paymaster infrastructure into a unified developer platform. The integration is tightest for teams already using Alchemy as their RPC provider — Account Kit is a natural extension of the Alchemy stack.
LightAccount is Alchemy's opinionated, minimalist smart account: less modular than Kernel or Nexus, but simpler to reason about and deeply integrated with Alchemy's gas manager (paymaster) and bundler.
Why Choose Alchemy Account Kit Over ZeroDev
- If you're already on Alchemy for RPC and want to extend to smart accounts without adding a vendor
- If simplicity over modularity — LightAccount is easier to integrate than Kernel's plugin system for common use cases
- If you want Alchemy's SLAs and support for production applications
Comparison Table: Alchemy Account Kit vs. ZeroDev
| Feature | Alchemy Account Kit | ZeroDev |
|---|---|---|
| Smart Account | LightAccount (minimal) | Kernel (modular ERC-7579) |
| Gas Manager | ✅ Alchemy native | ✅ ZeroDev native |
| Session Keys | ⚠️ Limited | ✅ Full validators |
| Modularity | ⚠️ Limited | ✅ ERC-7579 plugins |
| Authentication | ❌ Requires 3rd party | ❌ Requires 3rd party |
| Open Source | ⚠️ LightAccount open | ⚠️ Kernel open |
| Ecosystem Lock-in | Alchemy RPC | Offchain Labs (Arbitrum) |
Why developers choose Alchemy Account Kit
Teams choose Alchemy Account Kit when they're already in the Alchemy ecosystem and want to add smart account features without adopting another vendor. LightAccount's simplicity is a genuine advantage for common use cases — if you don't need Kernel's full modular plugin system, LightAccount's smaller attack surface and straightforward integration can be faster to ship. The trade-off vs. ZeroDev is reduced session key flexibility and Alchemy's infrastructure lock-in vs. Offchain Labs/Arbitrum alignment.
6. Thirdweb
Thirdweb is an all-in-one web3 development platform — embedded wallets, smart accounts, contract deployment, payment rails, and analytics in one SDK. Unlike ZeroDev's pure smart account SDK focus, Thirdweb bundles the entire web3 development experience into a single platform with a generous free tier.
For teams that want to stop assembling components and start shipping, Thirdweb's breadth is its main advantage over ZeroDev's depth-at-one-layer approach.
Why Choose Thirdweb Over ZeroDev
- If you want everything bundled — wallets, contracts, payments, and RPC in one platform without assembly
- If you need built-in auth — Thirdweb includes embedded wallet SDK; ZeroDev does not
- If you're early-stage and want a generous free tier to get started quickly
Comparison Table: Thirdweb vs. ZeroDev
| Feature | Thirdweb | ZeroDev |
|---|---|---|
| Scope | Full Stack Platform | Smart Account SDK |
| Authentication | ✅ Embedded wallets | ❌ Requires 3rd party |
| Contract Tools | ✅ Extensive | ❌ |
| Session Keys | ⚠️ Limited | ✅ Full validators |
| Backend Wallets | ⚠️ Engine (self-host) | ❌ Not available |
| Open Source | ⚠️ Partial (SDKs) | ⚠️ Contracts only |
| Self-Hostable | ⚠️ Engine only | ❌ |
Why developers choose Thirdweb
Teams choose Thirdweb when they want a single vendor for the broadest possible web3 stack and don't want to wire together ZeroDev + separate auth provider + contract deployment tools. Compared to ZeroDev, Thirdweb's main win is built-in auth/embedded wallets — you don't need a second vendor for that layer. The trade-off is less depth: Thirdweb's session key support is more limited than Kernel's validator system, and the policy engine for fine-grained permission control is less mature than what Openfort or ZeroDev offer for advanced smart account use cases.
Recommendation by Use Case
| Use Case | Recommended Alternative |
|---|---|
| Need complete wallet stack (auth + smart accounts + gas) | Openfort |
| AI agent or server-side wallet automation | Openfort (TEE Backend Wallets) |
| Maximum smart account modularity (ERC-7579) | Openfort or Biconomy Nexus |
| Security-critical, high-value applications | Safe |
| Best bundler/paymaster infrastructure layer | Pimlico |
| Already on Alchemy, want simple smart accounts | Alchemy Account Kit |
| All-in-one platform with contracts and wallets | Thirdweb |
| Lowest cost entry to smart accounts | Thirdweb or Alchemy Account Kit |
Conclusion
ZeroDev remains an excellent choice for its specific scope: the Kernel smart account is modular, well-audited, and the session key validator system is the most developer-friendly implementation available. If you're already comfortable assembling your own stack — separate auth provider, ZeroDev smart accounts, third-party bundler failover — ZeroDev's SDK quality is hard to fault.
But the developer reality in 2026 is that "smart account SDK only" creates real friction. You need auth, embedded wallets, session keys, gas sponsorship, and increasingly server-side wallet automation for AI agents. ZeroDev covers one layer. The others require three more vendors, three integrations, three billing relationships, and three failure surfaces to debug at 2am.
Openfort is designed to replace that entire assembly. With OpenSigner for embedded wallets, TEE backend wallets for AI agent and server-side automation, built-in paymasters for gasless transactions, session keys, and native smart accounts (ERC-4337 and EIP-7702) — all in one open-source, self-hostable platform — Openfort eliminates the multi-vendor complexity that ZeroDev users inevitably hit as their apps grow.
Get started with Openfort — usage-based pricing, complete wallet stack included. See also: Magic alternatives, Privy alternatives, Turnkey alternatives.