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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.

73-96 of 156 tools.Download CSV
  • TONRepository

    TON Sandbox

    Execute TON contracts in a local sandbox for message-flow and state-transition tests.

    Documentation reviewed

    Limitations & source status
    Before using
    Add asynchronous message ordering, bounce and failure scenarios beyond successful transfers.
    Source status
    Documentation reviewed
  • CosmWasmDeveloper tool

    CosmWasm VM

    Execute CosmWasm contract bytecode through the virtual-machine library for controlled testing and integration.

    Documentation reviewed

    Limitations & source status
    Before using
    VM execution requires a correctly modeled host environment and external dependencies.
    Source status
    Documentation reviewed
  • CosmWasmDeveloper tool

    cosmwasm-check

    Check a compiled CosmWasm artifact for compatibility constraints before deployment.

    Documentation reviewed

    Limitations & source status
    Before using
    Artifact validation is a technical compatibility check, not a review of contract authorization or economics.
    Source status
    Documentation reviewed
  • CosmWasmRepository

    cw-multi-test

    Simulate interactions among CosmWasm contracts and modules in Rust integration tests.

    Documentation reviewed

    Limitations & source status
    Before using
    Simulation does not reproduce every chain-specific module or production execution detail.
    Source status
    Documentation reviewed
  • RustRepository

    ark-r1cs-std (Arkworks)

    Use ark-r1cs-std constraint gadgets for arithmetic and cryptographic operations inside Rust SNARK circuits.

    Research / prototype notice

    Limitations & source status
    Before using
    The reviewed README labels this implementation an academic prototype not ready for production.
    Source status
    Research / prototype notice
  • CircomRepository

    Circom

    Compile arithmetic circuits into constraint systems and witness-generation programs for ZK review.

    Documentation reviewed

    Limitations & source status
    Before using
    Witness generation success does not establish that every security-relevant relation is constrained.
    Source status
    Documentation reviewed
  • CircomRepository

    Circomspect

    Lint Circom circuits and inspect static-analysis warnings about potentially unsafe circuit constructions.

    Documentation reviewed

    Limitations & source status
    Before using
    Static checks do not establish that the full circuit expresses the intended statement.
    Source status
    Documentation reviewed
  • NoirRepository

    Noir

    Write and compile zero-knowledge programs using a DSL and ACIR-compatible proving workflow.

    Research / prototype notice

    Limitations & source status
    Before using
    The reviewed README describes early development and warns against production use of that implementation.
    Source status
    Research / prototype notice
  • CircomRepository

    Picus

    Check uniqueness of circuit signals to investigate under-constrained Circom, R1CS and gnark circuits.

    Documentation reviewed

    Limitations & source status
    Before using
    Uniqueness is one property. It does not prove all intended application constraints.
    Source status
    Documentation reviewed
  • CircomRepository

    snarkjs

    Inspect circuit artifacts, generate and verify proofs and work with supported setup-ceremony formats.

    Documentation reviewed

    Limitations & source status
    Before using
    Proof verification checks the encoded circuit, which may omit the intended application constraint.
    Source status
    Documentation reviewed
  • EVMWeb app / service

    Phalcon Explorer

    Inspect decoded transaction flows, calls and asset movements while investigating EVM activity.

    Documentation reviewed

    Limitations & source status
    Before using
    Decoded labels and traces need interpretation against the underlying transaction and contract state.
    Source status
    Documentation reviewed
  • EVMWeb app / service

    Sentio

    Index blockchain events and build analytics to investigate application activity and transaction behavior.

    Documentation reviewed

    Limitations & source status
    Before using
    An indexer's coverage and processor logic determine which events reach the analysis.
    Source status
    Documentation reviewed
  • EVMWeb app / service

    Tenderly

    Simulate transactions and inspect execution traces or state changes before an on-chain operation.

    Documentation reviewed

    Limitations & source status
    Before using
    Results depend on the chosen block, transaction inputs and simulation environment.
    Source status
    Documentation reviewed
  • EVMWeb app / service

    Dedaub Decompiler

    Reconstruct readable contract logic from an EVM address or raw bytecode using a hosted decompiler.

    Documentation reviewed

    Limitations & source status
    Before using
    The output is an approximation of source code and must be checked against bytecode and traces.
    Source status
    Documentation reviewed
  • EVMWeb app / service

    Ethereum Signature Database

    Look up candidate function and event signatures from Ethereum selectors and hashes.

    Documentation reviewed

    Limitations & source status
    Before using
    Selector collisions and untrusted submissions make a lookup result a hypothesis.
    Source status
    Documentation reviewed
  • EVMRepository

    EtherSolve

    Recover control-flow information from Ethereum bytecode for static-analysis research.

    Documentation reviewed

    Limitations & source status
    Before using
    Recovered edges require scrutiny when jump destinations depend on runtime data.
    Source status
    Documentation reviewed
  • EVMWeb app / service

    evm.codes

    Look up EVM opcodes, stack effects and gas-related reference information in an interactive interface.

    Documentation reviewed

    Limitations & source status
    Before using
    Use the applicable fork rules. Gas and opcode behavior can vary with the EVM revision.
    Source status
    Documentation reviewed
  • EVMRepository

    EVMole

    Extract selectors, argument information, mutability and storage-layout clues from EVM bytecode.

    Documentation reviewed

    Limitations & source status
    Before using
    Inferred interfaces need validation, especially around proxies and unusual dispatch code.
    Source status
    Documentation reviewed
  • EVMRepository

    Gigahorse

    Lift EVM bytecode into an analysis representation for decompilation and custom program analyses.

    Documentation reviewed

    Limitations & source status
    Before using
    Analysis quality depends on correct lifting and handling of dynamic control flow.
    Source status
    Documentation reviewed
  • EVMRepository

    Greed

    Perform symbolic execution on EVM contract binaries through a research-oriented analysis engine.

    Documentation reviewed

    Limitations & source status
    Before using
    Configure execution bounds and environment models before interpreting reachable paths.
    Source status
    Documentation reviewed
  • EVMRepository

    Heimdall-rs

    Inspect unverified EVM contracts with a bytecode-analysis toolkit for reverse engineering.

    Documentation reviewed

    Limitations & source status
    Before using
    Recovered structures are analytical guesses rather than authenticated original source.
    Source status
    Documentation reviewed
  • EVMRepository

    Panoramix

    Decompile EVM bytecode into a readable representation for investigating contracts without published source.

    Documentation reviewed

    Limitations & source status
    Before using
    Decompiler output can misrepresent complex control flow and compiler-specific patterns.
    Source status
    Documentation reviewed
  • EVMRepository

    pyevmasm

    Assemble and disassemble EVM instructions when inspecting raw bytecode and instruction sequences.

    Documentation reviewed

    Limitations & source status
    Before using
    Instruction decoding alone does not reveal contract intent or prove exploitability.
    Source status
    Documentation reviewed
  • EVMWeb app / service

    Sourcify Signature Database (OpenChain)

    Look up function and event signatures through the OpenChain destination now served by Sourcify.

    Provider page only

    Limitations & source status
    Before using
    A matching hash does not authenticate an ABI or establish a contract's implementation.
    Source status
    Provider page only

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.