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SAST and custom rules

Winfunc vs Semgrep

Compare repeatable custom rules with focused application investigations and the workflow connecting them.

Published · Matrix sources reviewed

Product scope follows linked public materials. Confirm availability and terms for your environment. Swipe or scroll horizontally to compare.

Winfunc and Semgrep compared by scope, finding evidence, remediation, deployment, and purchasing considerations.
ConsiderationSemgrepWinfunc
ScopeRule-based SAST: Community Edition and Semgrep Code differ in analysis scope; other platform products add SCA and secrets.[1][2]Codebase audits, diff-scoped PR review, focused security questions, and contextual triage.Details
Evidence & workflowInspectable custom rules, platform triage, and optional AI analysis; record edition and enabled analysis settings.[1][3]Revision-bound code paths, assumptions, and validation evidence where testing is feasible and authorized.Details
RemediationRule-defined fixes and Multimodal remediation guidance, suggested fixes, and Autofix workflows.[1]Suggested patches for engineering review, explicit fix verification, and regression checks within the agreed scope.Details
Deployment & dataLocal and CI scanning are documented; confirm data handling and deployment terms for the chosen edition and AI features.[1]Confirm source access, deployment, retention, processing region, and test boundaries in written terms.
Buying considerationsSpecify edition, analysis modes, AI features, modules, and who maintains custom rules.Agree repositories, review scope, usage, required integrations, and enterprise controls in the proposal.

Published by Winfunc. These are scope summaries and evaluation recommendations; a feature list does not establish detection quality or a winner.

Official sources and product context
  1. Semgrep: Semgrep Code overview, analysis modes, and AI features (opens in a new tab)
  2. Semgrep: Community Edition engine and platform scope (opens in a new tab)
  3. Semgrep: writing custom rules (opens in a new tab)

Original product context reviewed

Semgrep: Semgrep Community Edition pairs an open-source static-analysis engine with community rules for local and CI scans. Semgrep Code is the SAST offering in the commercial AppSec Platform: it supports custom rules and analysis across functions and files, while Community Edition’s dataflow analysis stays within a function. The wider platform offers Supply Chain and Secrets products. Semgrep also documents AI-powered detection for business logic issues and Multimodal assistance for triage and remediation. Compare the actual edition, analysis mode, and enabled products in your proposal; a Community Edition pilot does not represent the full platform.

Winfunc: Winfunc combines continuous pull request scanning with application context and user-defined policies, focused hypothesis investigations, and contextual triage of existing tool reports. It prepares suggested patches and records fix verification, regression checks, evidence, and limitations for engineering review.

When to choose each

Evaluate Semgrep
You want a rule-centered program with inspectable policies and an owner for rule maintenance.
Evaluate Winfunc
Your team needs application-specific investigations and context for remediation decisions.
Consider both
Retain custom rules and test investigation handoffs for selected reports or requirements.

Questions for the pilot

Custom rule ownership

Semgrep lets teams inspect and write rules that encode code patterns and security requirements. Choose a documented internal policy and compare the effort to express, maintain, and review it in each workflow.

Ask to see: A versioned rule or policy, representative compliant and noncompliant examples, its review owner, and a record of the resulting decisions.

Edition and analysis boundary

Identify whether the pilot uses Community Edition or Semgrep Code, and which cross-function or cross-file settings apply. Include an ordinary application workflow that spans more than one file and document the code each check actually covers.

Ask to see: Recorded engine and rule versions, enabled analysis settings, covered paths, exclusions, and reviewer-assessed reports from the same source revision.

AI-assisted application review

Semgrep’s AI features and Winfunc’s investigations have overlapping goals. Ask each to assess a documented application security requirement and explain the code context, assumptions, and unresolved questions behind its conclusion.

Ask to see: A report linked to the relevant revision and requirement, with the reasoning and any verification boundary visible to your application owner.

Triage and remediation ownership

Follow findings through the configured platform and developer workflow. Compare who can change a rule, dismiss a report, accept an exception, or approve a suggested patch, alongside the reviewer time those actions require.

Ask to see: A tracked finding, recorded triage rationale, reviewed patch, application tests, fix verification, and the enterprise controls included in the written scope.

Make the decision reviewable

Run a fair pilot.

Use the same revision and scope. Record unique findings, reviewer effort, a reviewed fix, and the limits of verification.

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Product-specific pilot steps
  1. 01Choose a representative repository, its source revision, an internal security policy, and an application requirement your reviewers already understand.
  2. 02Record the Semgrep edition, analysis mode, rules, and enabled AI features; give both providers the same authorized code and application context.
  3. 03Review unique findings against the policy and requirement, documenting exclusions, unanswered questions, and reviewer time.
  4. 04Take one accepted finding through normal patch review and verification, then compare setup effort, ongoing rule maintenance, data handling, and written commercial scope.
Estimate operating ROI