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RegexPilot is a Mac-native visual regex builder with AI. Drag blocks, see railroad diagrams, and test against authentic engines like Java, Python, and .NET offline.

With Cozystack, you can transform your bunch of servers into an intelligent system with a simple REST API for spawning Kubernetes clusters, Database-as-a-Service, virtual machines, load balancers, HTTP caching services, and other services with ease.

Website, pricing, platforms and company facts side by side.
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| Website | regexpilot.com | cozystack.io |
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| Company | Startup from Belgium · 1 - 9 employees · 2026 | — |
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In their own words, as submitted to SaaSHub.


Visual AST builder — drag-and-drop, railroad diagram, inspector panel Breakdown tree — plain-English explanation, bidirectional hover with the rail Authentic engines as native sidecars: Java (GraalVM AOT), Ruby (CRuby 3.4), C# (.NET 9 NativeAOT), PHP (static-php-cli), Python...
No description of Cozystack yet.
What each product offers, as listed by its team.


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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing RegexPilot and Cozystack.
RegexPilot's answer
Fully integrated stand-alone, UI friendly macos app, no info leaves your computer, soon fully integrated in visual studio for one workflow including AI generation, improvement or explanation of regular expressions
RegexPilot's answer
Developers, Database admin, students anyone that uses regular expressions or wants to learn it
RegexPilot's answer
The combination of AI generation, drag and drop visual builder and multiple language support
RegexPilot's answer
Rust, Tauri and Xcode
RegexPilot's answer
I found myself drawing the regex every time — on paper, on whiteboards, in the corner of a notebook. ^, a bubble for "any word character", an arrow into a group, with the English sentence scribbled underneath so I wouldn't lose what I meant.
RegexPilot is that drawing, made live. The bubbles you draw become the pattern, the arrows become the rail, and the natural-language caption you mumble to yourself sits right there in the Breakdown panel.
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When comparing RegexPilot and Cozystack, you can also consider the following products.

RegExr.com is an online tool to learn, build, and test Regular Expressions.
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RegexBuddy is your perfect companion for working with regular expressions.
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RegEx Generator is a simple-to-use application that comes with the brilliance of intuitive regex and is also helping you out to test the regex.
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Use RegexMagic to generate complete regular expressions to your specifications by using RegexMagic's flexible patterns, instead of the cryptic regex syntax.
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RegexOne offers learning regular expressions with simple, interactive examples.
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