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.
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Sysadmin ·
Btrfs in Linux 7.3 Doubles Direct I/O and Speeds fsync 5x
David Sterba sent the Btrfs updates for Linux 7.3 on August 19, 2026. Direct I/O climbs from about 50 to about 95 percent of theoretical maximum.
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Sysadmin ·
Linux 7.3 Rebuilds cgroup Scheduling on One Runqueue
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Sysadmin ·
Marvell Hands Google a $12.2B Warrant for TPU Silicon
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Dev ·
Veeda AI Raises $90M Seed to Build World Models
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Dev ·
ChatGPT Ads Reach 31 European Markets on August 24
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Dev ·
Go 1.27 Puts json/v2 Under the Old encoding/json API
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Sysadmin ·
Linux 7.3 Cuts a 705 ms KSM Stall Down to 1.67 ms
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
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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.