Simulators, tools, and playgrounds
A live UDP traffic simulation displaying the real-time RTT signatures of 7 different Active Queue Management algorithms including CoDel, PIE, and Cake.
Launch SimAn interactive whiteboard tailored for network topology design. Includes intelligent shapes, a text tool, and a robust undo/redo history stack.
Open SketcherA secure, client-side cryptographic sandbox. Perform real-time AES symmetric encryption, Base64/Hex encoding, and SHA/MD5 hashing instantly as you type.
Enter LabInstantly decode and inspect JSON Web Tokens (JWT). View headers and payloads with syntax highlighting and format validation.
Open DecoderGenerate strong, secure, and highly randomized passwords locally in your browser. Customize length and character sets.
Generate PasswordAnalyze the strength, entropy, and estimated crack time of your passwords locally without sending data to a server.
Check StrengthCalculate MD5, SHA-1, and SHA-256 hashes of files directly in your browser. Works completely offline with large file support.
Open HasherA visual interface to build complex Nmap commands. Select scan types, timing templates, and flags without memorizing the man page.
Launch BuilderPerform instant DNS lookups using Google's DNS-over-HTTPS. Query A, AAAA, MX, TXT, CNAME, and NS records directly from your browser.
Open DNS LookupQuery registration and ownership information for domains or IP addresses instantly using a free public API.
Open WHOIS LookupA fast, client-side JSON formatter and validator. Paste raw JSON payloads to instantly beautify and syntax-highlight them for readability.
Open BeautifierA simple and fast client-side tool to encode and decode text to and from Base64 format. Great for quick string manipulation.
Open ToolEasily encode and decode URL strings and parameters. Fix messy links or prepare payloads for web requests instantly.
Open ToolConvert lists of MAC addresses between different formats (Cisco, Linux, Windows) with a single click. Ideal for bulk config updates.
Open FormatterA fast, client-side IPv4 Subnet and CIDR calculator. Instantly calculates Network Addresses, Broadcast IPs, Wildcard Masks, and Usable Host boundaries.
Open ToolConvert between CIDR notation and IP address ranges quickly. Calculate exact start/end addresses or find optimal CIDR blocks.
Open CIDR ToolA visual file permission generator. Toggle Read, Write, and Execute switches to instantly output the precise Octal command and Symbolic strings for Linux files.
Open ToolType raw Linux cron scheduling syntax and instantly decode it into plain, human-readable English.
Open ToolA lightning-fast reference list of the most critical IANA-registered TCP/UDP service ports.
Open Database