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DeFi Security Alliance · Tool directory

Web3 & smart contract security tools

Find tools for code review, fuzzing, formal verification, transaction analysis, wallet protection and security operations. Compare what each tool does, where it fits and what its results cannot establish.

Listed tools
156
Categories
21
Review date

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Find a tool for your security task

Browse 24 entries at a time, ordered by primary task and name. Search and filters cover all 156 tools. Confirm exact chain and version support at the source.

1-24 of 156 tools.Download CSV
  • EVMRepository

    4naly3er

    Generate a first-pass Solidity findings report for recurring code patterns during audit preparation.

    Documentation reviewed

    Limitations & source status
    Before using
    Treat generated findings as review leads, with duplicates and false positives possible.
    Source status
    Documentation reviewed
  • EVMRepository

    Aderyn

    Inspect Solidity source with a Rust-based static analyzer and review findings in the command line or editor.

    Documentation reviewed

    Limitations & source status
    Before using
    Confirm compiler and project support before making it a CI gate.
    Source status
    Documentation reviewed
  • EVMRepository

    Decurity Semgrep Rules

    Apply smart contract Semgrep rules informed by known DeFi exploit patterns to source-code review.

    Documentation reviewed

    Limitations & source status
    Before using
    Rules cover defined patterns. Manually review matches and unsupported syntax.
    Source status
    Documentation reviewed
  • EVMRepository

    Securify 2

    Analyze Solidity contracts against a collection of compliance and violation patterns using static analysis.

    Documentation reviewed

    Limitations & source status
    Before using
    Check the repository's compiler requirements before using it on a modern codebase.
    Source status
    Documentation reviewed
  • EVMRepository

    Slither

    Run Solidity and Vyper detectors, inspect contract structure and build custom static analyses before manual review.

    Documentation reviewed

    Limitations & source status
    Before using
    Requires a reproducible build. Detector findings need contextual triage.
    Source status
    Documentation reviewed
  • EVMRepository

    Slitherin

    Add Pessimistic's detector collection to Slither-based Solidity reviews.

    Documentation reviewed

    Limitations & source status
    Before using
    Requires a compatible Slither environment and detector-specific triage.
    Source status
    Documentation reviewed
  • EVMRepository

    SmartCheck

    Inspect legacy Solidity code with pattern-based vulnerability and bug detection.

    Legacy / unmaintained

    Limitations & source status
    Before using
    Deprecated since 2020. Its README warns about incorrect analysis from Solidity 0.6 onward.
    Source status
    Legacy / unmaintained
  • SolanaRepository

    Solang

    Compile Solidity for supported alternative targets, including Solana, and inspect target-specific diagnostics.

    Documentation reviewed

    Limitations & source status
    Before using
    Solidity syntax compatibility does not imply Ethereum execution semantics on another target.
    Source status
    Documentation reviewed
  • EVMRepository

    Solhint

    Enforce Solidity style, naming and selected security rules in editor and CI workflows.

    Documentation reviewed

    Limitations & source status
    Before using
    A clean lint result does not establish correctness of protocol logic.
    Source status
    Documentation reviewed
  • EVMRepository

    Solidity Visual Developer

    Use editor annotations, contract navigation, graphs and inline review helpers while reading Solidity.

    Documentation reviewed

    Limitations & source status
    Before using
    Visual cues assist the reviewer. They do not independently validate security properties.
    Source status
    Documentation reviewed
  • EVMRepository

    Vyper

    Compile Vyper contracts and inspect compiler output as part of a reproducible contract review.

    Documentation reviewed

    Limitations & source status
    Before using
    A successful compilation does not verify the application's economic assumptions.
    Source status
    Documentation reviewed
  • EVMRepository

    Wake

    Combine Solidity vulnerability detectors with Python-based testing and fuzzing in one development framework.

    Documentation reviewed

    Limitations & source status
    Before using
    The build configuration and test harness determine which behavior is exercised.
    Source status
    Documentation reviewed
  • EVMRepository

    crytic/properties

    Reuse property templates for common Ethereum operations when designing a contract fuzzing harness.

    Documentation reviewed

    Limitations & source status
    Before using
    Adapt properties to the token or protocol specification before interpreting failures.
    Source status
    Documentation reviewed
  • EVMRepository

    Diligence Fuzzing

    Use the Diligence Fuzzing client to prepare and submit contract fuzzing campaigns to its service.

    Documentation reviewed

    Limitations & source status
    Before using
    A public client repository does not establish current hosted-service availability or plan access.
    Source status
    Documentation reviewed
  • EVMRepository

    Echidna

    Fuzz sequences of contract calls against developer-written Solidity invariants and retain failing examples.

    Documentation reviewed

    Limitations & source status
    Before using
    Reachable states depend on the harness, caller setup, corpus and campaign budget.
    Source status
    Documentation reviewed
  • EVMRepository

    Echidna Parade

    Study a repository of Echidna fuzzing examples and campaign configurations.

    Legacy / unmaintained

    Limitations & source status
    Before using
    The repository is archived. Examples need review against current tool versions.
    Source status
    Legacy / unmaintained
  • EVMRepository

    Foundry

    Use Forge tests and invariants, Anvil forks and Cast inspection within an EVM development suite.

    Documentation reviewed

    Limitations & source status
    Before using
    Fork tests inherit the selected block, RPC state and assumptions in the test harness.
    Source status
    Documentation reviewed
  • EVMRepository

    FuzzUtils

    Turn failing Echidna or Medusa property sequences into Foundry regression-test cases.

    Documentation reviewed

    Limitations & source status
    Before using
    Validate the generated test against the original state, dependencies and failure conditions.
    Source status
    Documentation reviewed
  • EVMRepository

    ItyFuzz

    Explore smart contract bytecode with hybrid fuzzing to generate vulnerability candidates and execution traces.

    Documentation reviewed

    Limitations & source status
    Before using
    Investigate findings and reproduce them in a controlled environment with the same state.
    Source status
    Documentation reviewed
  • EVMRepository

    Medusa

    Run parallel coverage-guided Solidity fuzzing campaigns with configurable test properties and call sequences.

    Documentation reviewed

    Limitations & source status
    Before using
    Coverage growth alone does not establish that the chosen invariants express the intended rules.
    Source status
    Documentation reviewed
  • SubstrateRepository

    Phink

    Fuzz ink! smart contracts with an instrumentation and coverage-oriented workflow for Substrate projects.

    Documentation reviewed

    Limitations & source status
    Before using
    Requires a supported contract build and meaningful entry-point and invariant configuration.
    Source status
    Documentation reviewed
  • EVMRepository

    Scribble

    Instrument Solidity specifications as runtime checks that tests and fuzzing campaigns can exercise.

    Documentation reviewed

    Limitations & source status
    Before using
    Annotations must encode the correct property. Instrumentation changes the analyzed build.
    Source status
    Documentation reviewed
  • EVMRepository

    Halmos

    Run Solidity properties as symbolic tests to search for counterexamples over symbolic inputs.

    Documentation reviewed

    Limitations & source status
    Before using
    Loop bounds, external-call models and solver limits constrain conclusions.
    Source status
    Documentation reviewed
  • EVMRepository

    hevm

    Execute EVM code concretely or symbolically to investigate contract behavior and properties.

    Documentation reviewed

    Limitations & source status
    Before using
    Choose compatible EVM semantics and explicitly model the surrounding environment.
    Source status
    Documentation reviewed

From question to evidence

Choose a security tool workflow

These combinations are editorial starting points. Select the tools that match your artifact and threat model, then record enough context for another reviewer to reproduce the result.

Review a Solidity protocol

Start with
Pinned commit, compiler settings, deployment addresses and written invariants.
Expected evidence
Triaged detector findings, reproducible tests and failing invariant sequences.
Review boundary
Add roles, oracle states, upgrade paths and cross-contract assumptions that generic detectors cannot infer.
Design a contract fuzzing campaign

Check a critical property

Start with
A precise statement about balances, permissions or state transitions, plus environmental assumptions.
Expected evidence
A counterexample, a completed proof within the model or an explicitly inconclusive result.
Review boundary
Record loop bounds, external-call summaries, solver limits and proof obligations that remain open.
Define the wider audit scope

Review a Solana program

Start with
Program source, IDL where available, account constraints and the deployed program identifier.
Expected evidence
Account-state tests, fuzzing failures and a separate reproducible-build comparison.
Review boundary
Exercise signer, ownership, PDA, CPI, account-reuse and upgrade-authority assumptions.
Scope a Solana security review

Inspect an unverified EVM contract

Start with
Chain, address, runtime bytecode, implementation address where applicable and relevant transactions.
Expected evidence
Candidate functions, storage clues, reconstructed logic and traces to investigate.
Review boundary
Resolve proxies and corroborate inferred behavior. A selector lookup or decompiler cannot authenticate original source.
Investigate privileged contract behavior

Check a token before interaction

Start with
Exact chain and contract address, intended swap route and current allowance state.
Expected evidence
Dated risk signals covering permissions, trading behavior, liquidity, holders and approvals.
Review boundary
Use chain-appropriate tools. A clean scan cannot predict future owner actions or make a token an investment recommendation.
Understand honeypot-check limitations

Investigate and monitor a deployment

Start with
Contract inventory, transaction hashes, protocol invariants, alert recipients and response permissions.
Expected evidence
Reproducible traces, tested alert conditions and evidence attached to an owned incident workflow.
Review boundary
Distinguish detection from response. Test notification delivery and approval boundaries before enabling automation.
Plan on-chain monitoring

Review a zero-knowledge circuit

Start with
Circuit source, constraint artifacts, witness assumptions, public inputs and verifier integration.
Expected evidence
Constraint warnings, uniqueness results, witness tests and proof-verification artifacts.
Review boundary
Confirm the circuit encodes the intended statement, then review application binding and replay protection separately.
Review replay and domain boundaries

Check the code-to-deployment boundary

Start with
Dependency lockfiles, build configuration, artifacts, signing policy and the target deployment.
Expected evidence
Dependency findings, secret-scan results, an artifact inventory and signature-verification evidence.
Review boundary
Connect artifact identity to deployed bytecode and review the dapp frontend and administrative signing path.
Prepare an incident-response plan

Compare by the question answered

Common tool comparisons

How six common comparisons change the review workflow
ComparisonWhat differsSelection criterion
Slither vs Mythril

Slither analyzes source and compiler structures with detectors and inspection outputs.

Mythril explores EVM bytecode symbolically to seek vulnerability candidates.

Use source analysis for broad triage. Use symbolic exploration for additional execution evidence. Compare reproducible findings, not raw warning counts.
Foundry vs Echidna vs Medusa

Foundry combines development tests, invariant campaigns and fork-based workflows.

Echidna and Medusa focus on property-driven fuzzing campaigns and transaction sequences.

Run the same meaningful property and reachable-state setup before comparing campaign results. Preserve seeds, corpus, duration and tool versions.
Halmos vs Certora vs Kontrol

Halmos and Kontrol bring symbolic reasoning to Solidity-test-oriented workflows.

Certora uses CVL specifications and a verification service.

Choose based on the property, specification language, environment modeling and whether the proof completes within your resource budget.
Source verification vs security verification

Sourcify and solana-verify compare a build with a deployed artifact.

Formal tools reason about specified properties. Tests exercise selected behaviors.

Record these as separate evidence fields. A matching source build says nothing by itself about access control or economic safety.
Token scanner vs approval checker

Token scanners report selected contract, trading, holder and liquidity signals.

Approval checkers inspect permissions already granted by a wallet.

Use both for their respective questions. Revoking an allowance does not change a token contract or recover stolen assets.
Transaction simulator vs live monitor

A simulator evaluates a proposed transaction against a chosen state.

A monitor evaluates observed activity or state against configured detection rules.

Preserve the simulation inputs, then define the conditions that should trigger alerts after deployment. Neither replaces an incident owner.

Evidence & review scope

How this directory was assembled

DeFiSec reviewed 172 candidate tools and retained 156 entries across 21 categories. The September 5, 2026 source review excluded 16 candidates because of duplicate destinations or insufficient current product evidence. It retained 11 entries with legacy or maintenance notices, 5 with research or prototype notices and five supported only by provider-page evidence.

  1. Identify a concrete task. Include scanners, analyzers, testing frameworks, verification tools, investigation interfaces and supporting security infrastructure. A compiler or reporting tool is labeled by its actual role.
  2. Check a primary destination. Inspect official documentation, a project repository or the provider page; record the check date, response, redirects and content hash where available.
  3. Separate purpose from assurance. Describe the documented function and its review boundary. Documentation review does not establish runtime availability, active maintenance, license rights, price or detection quality.
  4. Preserve negative evidence. Record excluded candidates and visible maintenance notices. Count a suite once unless a separately named component has a distinct workflow.

Tools were not installed or benchmarked. Paid plans and transaction execution were not tested. Entries are not ranked by quality; inclusion is not an audit endorsement. Audit Builder is a DeFi Security Alliance product and is identified in its description.

For the wider review process, consult Ethereum's contract-testing guide, Trail of Bits' secure-contract guidanceand the OWASP Smart Contract Security Verification Standard. Product-specific evidence is linked from every card.

Practical questions

Web3 security tools FAQ

Which Web3 security tool should I start with?

Start with the artifact and question you have: source code for static analysis, a testable invariant for fuzzing, bytecode for reverse engineering or a deployed address for monitoring. Use the workflow table to assemble a small set of complementary tools, then check the source-linked requirements for your chain and build.

Are the listed tools free or open source?

The directory includes repositories, developer tools and hosted services. A public repository does not by itself establish license permissions and an accessible product page does not establish a free plan. Pricing and license terms were not audited in this review. Confirm both at the linked source.

Can a scanner or AI tool replace a smart contract audit?

A scanner can surface specific patterns or candidate findings. It cannot establish that the system meets every business rule, trust assumption or economic invariant. Require reproducible evidence for findings and review missing scenarios, integrations, privileges and deployment controls.

Which tools work for Solana, Move, Cairo, TON and CosmWasm?

Use the ecosystem filter and the dedicated categories. Solana account execution, Sui objects, Aptos resources, Starknet account contracts, TON messages and CosmWasm host behavior require different harnesses. A language label is not a promise of support for every chain or compiler version.

Does a honeypot check prove a token is safe?

It provides evidence about selected checks at a particular time. Trading routes, fees, permissions, liquidity and contract implementation can change. Record the exact chain and address and inspect individual signals instead of treating a score as a guarantee.

Why are archived and prototype tools included?

They help readers reproduce historical reports, understand older workflows and identify replacements. Legacy and research notices are visible in each affected card and can be selected with the status filter. Inclusion is not a recommendation to deploy a deprecated or experimental implementation.

What did DeFiSec actually verify?

The review checked primary repository, documentation and provider URLs, recorded response status and redirects and inspected the stated purpose and relevant maintenance notices. Five entries have only provider-page evidence and are labeled accordingly. Tools were not installed or benchmarked, paid access was not tested and detection quality was not measured.

How can I reproduce or reuse the directory review?

Download the catalog as CSV or JSON and the dated source-review CSV. Each listed tool has a source URL and check date. The source review also records exclusions, response status and a content hash where a response was obtained. These files preserve the review snapshot. They do not promise that a destination remains unchanged.