1
Also covers open source and security · same kind of open-source project
rehydra scans LLM prompts for accidental personal information before they reach a model.
Alternatives
The Best Greywall Alternatives in 2026
15 alternatives0 free · 10 open source
Looking for something like Greywall? Here are 15 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 10 are open source.
Greywall provides a deny-by-default sandbox for AI coding agents, with kernel-enforced isolation on Linux and macOS.
Top picks at a glance
First suggestionrehydrarehydra scans LLM prompts for accidental personal…Another optionReviewCerberusReviewCerberus analyzes Git branch differences and…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | rehydra | — | Yes | — |
| 2 | ReviewCerberus | — | Yes | — |
| 3 | Prediction Guard | — | Not stated | Web |
| 4 | Sourcery | — | Not stated | Linux, Web |
| 5 | promptfoo | — | Not stated | Web |
| 6 | AI Code Completion by DeepCode | — | Not stated | Web |
| 7 | Qodo | — | Not stated | Web |
| 8 | EvalView | — | Yes | — |
| 9 | promptfoo | — | Yes | — |
| 10 | PR-Agent | — | Yes | — |
All Greywall alternatives
2
Also covers developer tools and open source · same kind of open-source project
ReviewCerberus analyzes Git branch differences and generates code review reports using AWS Bedrock or Anthropic API.
3
Prediction Guard
predictionguard.comAlso covers security
Prediction Guard provides a self-hosted platform for applying NIST and OWASP policies to models and agents.
4
Sourcery
sourcery.aiAlso covers linux and security
Sourcery reviews pull requests in GitHub and GitLab, identifying bugs and suggesting summaries and one-click fixes.
5
promptfoo
promptfoo.devAlso covers security
Promptfoo helps developers build and test AI applications by identifying security vulnerabilities during development.
6
AI Code Completion by DeepCode
snyk.io/platform/deepcode-aiAlso covers security
Snyk DeepCode AI helps review code and identify security issues, with autofix features for developers.
7
Qodo
qodo.aiAlso covers security
Qodo reviews code with codebase context and supports workflows for IDEs, pull requests, and security.
8
Also covers open source · same kind of open-source project
EvalView regression tests AI agents by snapshotting behavior and comparing tool calls in CI.
9
Also covers open source · same kind of open-source project
promptfoo tests prompts, agents, and retrieval systems with evaluations and security testing.
10
Also covers open source · same kind of open-source project
This repository contains code for PR-Agent, an open source tool for reviewing pull requests.
11
Also covers open source · same kind of open-source project
OpenCodeReview combines deterministic checks and language model agents for code review with line-level comments.
12
Also covers open source · same kind of open-source project
LangWatch provides evaluations for language models and tests for AI agent applications.
13
Also covers open source · same kind of open-source project
PR-Agent provides automated review of software pull requests in this open source repository.
14
Also covers open source · same kind of open-source project
Blinky provides an open-source AI debugging agent integrated into Visual Studio Code.
15
Also covers open source · same kind of open-source project
h5i provides a red-teaming workspace with browser access, HTTP traffic controls, sandboxed execution, and auditable sessions.
No alternatives match this filter.
Alternatives to similar tools
Prediction Guard11 alternativesAI Code Completion by DeepCode11 alternativesReviewCerberus15 alternativespromptfoo8 alternativesQodo13 alternativesPR-Agent19 alternatives
What is the best alternative to Greywall?
Based on features, tags and platforms, the closest alternatives to Greywall are rehydra, ReviewCerberus, and Prediction Guard.
Are there open-source alternatives to Greywall?
Yes: rehydra, ReviewCerberus, EvalView, and promptfoo.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative