Tools + answers for the people who keep things running
Your tech questions, answered in seconds.
Free, fast, browser-based tools for sysadmins, developers and security folks. No accounts, no uploads, no tracking your inputs. Plus field guides that give you the answer first and the theory after.
Latest news
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Network ·
Cisco Unifies Two Rival Switch Silicons in One AI Rack
Cisco expanded its Secure AI Factory on August 25, 2026 with Supermicro compute and a Nexus One fabric running Silicon One at the front and Spectrum-X at the back.
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Sysadmin ·
Emerald AI Raises $150M to Make Data Centres Flex on Demand
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Network ·
MetaRoCE Drops PFC and Treats the AI Fabric as Lossy
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Sysadmin ·
Nvidia Puts Groq 3 LPX Into Full Production for Inference
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Dev ·
Amazon Shuts Mechanical Turk on September 30 After 21 Years
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Dev ·
IBM's Granite 4.2 Puts a Thinking Switch in a 3B Model
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Sysadmin ·
OpenAI's Jalapeño Beats Blackwell on AI Work Per Watt
Flagship tools
All tools →Dev
AI Token Counter
Count tokens and estimate cost for GPT-5, Claude 4 and Gemini 3 before you call the API.
Runs in your browser
Dev
JSON to TypeScript
Turn any JSON payload into clean, typed TypeScript interfaces in one paste.
Runs in your browser
Sysadmin
tar Command Generator
Build, extract or list any tar archive by clicking, with every flag explained.
Runs in your browser
SEO
AI Crawler Blocker
Generate a robots.txt that blocks GPTBot, ClaudeBot and 20 other AI bots, plus Nginx and Apache rules.
Runs in your browser
By category
Developer tools
Decode, build and debug faster: JWT, cron, encodings and more.
Network tools
Subnets, DNS, IPs: the daily bread of network admins, done right.
Security tools
Passwords, TLS certificates and the things that keep you off incident calls.
Email & DNS tools
SPF, DKIM, MX and the plumbing behind deliverability.
SEO tools
Technical SEO checks that actually move rankings.
Sysadmin tools
Converters, calculators and cheats for people who run servers.