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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Dev ·
Anthropic's Quarterly Revenue Passes $11.5 Billion
Preliminary figures put Anthropic at more than $11.5 billion for the second quarter, up from $787 million a year earlier, with positive adjusted operating income.
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Dev ·
Debian's LLM Vote Opens With Eight Ballot Options
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Sysadmin ·
Nvidia's Filing Shows $21B in SpaceX, $30B in Intel
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Dev ·
SpaceX Closes Its $60 Billion Cursor Acquisition
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Sysadmin ·
Linux 7.3 Set to Fix Balancing on Intel Hybrid CPUs
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Sysadmin ·
Copilot Merges Into One App, Three Features Retire
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Dev ·
Qwen3.8-27B Ships Open Weights Under Apache 2.0
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.