
RegexPilot
RegExr
RegexBuddy
RegEx Generator
RegexMagic
RegexOne
i Hate Regex
Regex Crossword
Emisar.dev
Visual AST builder โ drag-and-drop, railroad diagram, inspector panel Breakdown tree โ 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 (python-build-standalone), Perl (system perl), Swift (NSRegularExpression), Go (Go stdlib), PostgreSQL (system psql, Spencer ARE), MySQL (system mysql, ICU), Dart (system dart, V8 Irregexp), Elixir (system elixir, Erlang :re), R (system Rscript, gregexpr perl=TRUE), Shell (system grep / sed) In-process engines: regress (ES2018 JS/TS), regex crate (Rust / Go / RE2), pcre2-rust (fallback when a system tool is missing) 21 flavor dispatch with per-flavor syntax support โ see the list below Match + replace testing with live highlighting, multi-cursor, visual replace builder AI chat: OpenAI, Claude, Gemini, DeepSeek, Qwen, Mistral, Groq, OpenRouter, xAI (Grok) โ BYO key; plus LM Studio / Ollama / llama.cpp server / LocalAI for offline Voice dictation via Whisper Tiny (offline ggml, multilingual) Pattern library: 50 curated patterns across 12 flavors, folders, tags, import/export JSON Code export for 21 languages (JS, TS, Python, Java, C#, PHP, Ruby, Go, Perl, Rust, Swift, Scala, Kotlin, Groovy, Clojure, Elixir, R, Dart, MySQL, PostgreSQL, Shell) PNG / SVG railroad export Themes: 9 community palettes + import JSON + system-follow Deep links (regexpilot://), share menu, iCloud Drive-ready file format AI API keys secured in macOS Keychain โ persist across reinstalls, tamper-resistant
Emisar is the last MCP server youโll need to install: a Zero-Trust gateway connecting Claude, Cursor, ChatGPT, and any AI agent to your infrastructure. One server handles production access, debugging, alerts, and internal operations, with new capabilities added as packs. Agents can inspect real production state, debug what they shipped, and help resolve incidents. Safe reads run automatically; policy allows, blocks, or routes risky actions for approval. No SSH keys, VPNs, remote shells, or standing shell access โ and every call is recorded.
RegexPilot
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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
Emisar.dev's answer:
Choose emisar when you want an agent to keep investigating and handling routine operations without handing it SSH credentials or supervising every call. Compared with raw shell access, copy-paste workflows, or one-off MCP servers, emisar provides reviewed action contracts, host-level enforcement, risk-based policy, scoped access, approvals, pack integrity checks, and a durable audit trail. It is built specifically for governed infrastructure access rather than generic automation.
RegexPilot's answer
Developers, Database admin, students anyone that uses regular expressions or wants to learn it
Emisar.dev's answer:
emisar is for SRE, DevOps, platform engineering, infrastructure, and security teams that want AI agents to inspect and operate production systems. It is especially relevant to teams managing multiple Linux hosts, clusters, databases, cloud services, or regulated environments where unrestricted shell access and incomplete audit records are unacceptable.
RegexPilot's answer
The combination of AI generation, drag and drop visual builder and multiple language support
Emisar.dev's answer:
emisar lets AI agents work on real infrastructure without giving them a shell. Agents choose from a finite catalog of typed, versioned actions. Policy decides what runs, what requires approval, and what is denied, while an outbound-only runner verifies the action again on the host. New capabilities arrive as packs behind the same MCP integration, and every request is recorded in both a searchable audit trail and a tamper-evident host journal. [
RegexPilot's answer
Rust, Tauri and Xcode
Emisar.dev's answer:
The hosted control plane and operator interface use Elixir, Phoenix, LiveView, PostgreSQL, and Tailwind CSS. The host runner and MCP bridge are written in Go. Action packs use YAML and JSON Schema, while production infrastructure is managed with Terraform on Google Cloud. The system communicates through MCP, OAuth 2.1, TLS, and WebSockets.
RegexPilot's answer
I found myself drawing the regex every time โ 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.
Emisar.dev's answer:
Founder Andrii Dryga spent a decade working as a CTO, full-stack engineer, SRE, and DevOps engineer. He experienced the cost of running the wrong command on the wrong cluster, while also seeing AI solve operational problems in seconds. emisar grew from the need to preserve both truths: AI agents are useful, and production access must remain bounded. Its answer is to give agents a reviewed catalog of operations instead of a blank terminal.
Emisar.dev's answer:
RegExr - RegExr.com is an online tool to learn, build, and test Regular Expressions.
RegexBuddy - RegexBuddy is your perfect companion for working with regular expressions.
RegEx Generator - 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.
RegexMagic - Use RegexMagic to generate complete regular expressions to your specifications by using RegexMagic's flexible patterns, instead of the cryptic regex syntax.
RegexOne - RegexOne offers learning regular expressions with simple, interactive examples.
i Hate Regex - regex cheatsheet for the haters