Extension directory

🤖 Copilot

AI-powered cell completion and formula suggestions using GitHub Copilot.

🌤️ Weather

Current weather and forecasts for any city. Uses wttr.in — no API key needed.

🔒 TLS Inspector

Check SSL/TLS certificate details, expiry dates, and chain validity for any domain.

🍅 Pomodoro

Focus timer with work/break cycles. Track sessions directly in your spreadsheet.

📈 Stock Quotes

Live stock price quotes from Stooq. Track your portfolio in spreadsheet cells.

💰 Crypto Prices

Live cryptocurrency prices from CoinGecko with 24h change indicators.

📖 Dictionary

Inline dictionary definitions via dictionaryapi.dev. Look up any word, get definitions by part of speech.

🧾 1099 Tax Estimator

US self-employment tax calculator. Estimate quarterly payments right in your spreadsheet.

👤 Gravatar

Look up Gravatar profiles and MX records for email addresses.

🖥️ System Monitor

Live CPU, RAM, disk usage, and uptime in cells. Visual progress bars and color-coded indicators.

🏠 Mortgage Calculator

Fixed-rate mortgage amortization — monthly payment, total interest, and total cost.

✅ Todo Manager

Task management with priorities (!low/normal/high/critical), due dates (@YYYY-MM-DD), completion tracking, and progress stats.

💰 Budget Envelopes

Track spending per category with visual progress bars and color-coded indicators (🟢≤50%, 🟡≤75%, 🟠≤90%, 🔴>90%). Pure math, no network.

📅 Quarterly Tax Countdown

IRS estimated tax deadline countdown with urgency indicators, progress bar, and full-year view. Auto-detects next deadline. Pairs with 1099-ext.

💱 Currency Converter

Live currency conversion using ECB rates via Frankfurter API. 200+ currencies, no API key required, 1-hour rate cache.

📆 Calendar

Upcoming events from .ics calendar files, grouped by date. Auto-scans Evolution, Thunderbird, KDE, Calcurse directories.

📰 Hacker News Top

Live Hacker News front page on your wallpaper. Shows top stories with points, comments, and age. Auto-refreshes every 5 minutes.

🚦 API Status

Monitor 18+ service health dashboards (GitHub, Cloudflare, npm, Discord, AWS, etc.) on your desktop. Uses public Statuspage.io APIs — no API key needed.

🔀 GitHub PRs

PR review dashboard — shows pull requests needing your attention (review-requested, authored, specific repo) with status icons and age. Uses the gh CLI.

🔌 Port Checker

TCP port/service health checker. Probes local ports (20 well-known services), color-coded UP/DOWN status with latency in milliseconds.

🐳 Docker

Container health monitor — shows running Docker containers with status, CPU/memory usage, and uptime. Queries the Docker Engine API.

🌿 Git Status

Repository health at a glance — current branch, modified/staged/untracked counts, stash count, and last commit message for your repos.

🏓 HTTP Ping

HTTP ping checker — status code and response latency for any URL. Quick health check for your services.

💰 Freelance Rate

Minimum viable hourly rate calculator — factors in taxes, benefits, vacation, and billable hours to hit your target annual income.

🧾 1099 Tax Estimator

US self-employment tax estimator — calculates SE tax, income tax, and quarterly estimated payments for freelancers and contractors.

📚 Citation Lookup

DOI → formatted citation via Crossref API. Paste a DOI, get authors, title, journal, and year.

📖 Thesaurus

Inline thesaurus lookup via Datamuse API. Find synonyms, related words, and alternatives for any word.

📧 MX Lookup

MX record lookup via DNS-over-HTTPS. Check mail server configuration for any domain — no dig required.

⏳ Countdown

Countdown timer to important dates with progress bars. Track deadlines, launches, and milestones right in your spreadsheet.

🌍 World Clock

Multi-timezone world clock — 40+ city/zone aliases, business-hours indicators (🟢🟡🔴), time-of-day icons, fuzzy matching. Zero network calls.

🚗 IRS Mileage

IRS standard-mileage deduction calculator — business, medical, and charity rates for 2021–2025. Pure math, zero network deps.

☸️ Kubernetes Pods

Live Kubernetes pod status from your kubeconfig. Color-coded icons (🟢Running 🔴Failed 🟡Pending 🟠CrashLoop), namespace filtering, auto-refresh.

📊 Contribution Margin

Break-even analysis and contribution margin calculator. Color-coded health indicators (🟢🟡🟠🔴), margin %, break-even units. Pure math, no network.

📉 Depreciation

Straight-line and MACRS depreciation schedules. IRS Pub 946 tables (3/5/7/10/15/20-yr classes), salvage value support, year-by-year breakdown. Pure math.

🔑 JWT Decoder

Decode JWTs entirely offline — header, claims, timestamps, expiry check. Privacy-first alternative to jwt.io. Tokens never leave your machine.

⏰ Cron Parser

Convert 5-field cron expressions to human-readable descriptions. Supports ranges, lists, steps, named days and months. Never google crontab.guru again.

📜 Git Log

Recent git commits in cells — hash, author, relative time, message. Point at any repo path. Great for project dashboards and standup prep.

🔑 GUID Generator

Generate UUIDs on demand — standard, no-dash, braced, uppercase, batch up to 20. Perfect for config files and database seeding.

🔤 Regex Explainer

Tokenize and explain regex patterns — anchors, character classes, quantifiers, groups (capturing, named, lookahead/behind), alternation. Validates patterns.

🔐 Base64 Codec

Encode/decode base64 with auto-detect — paste tokens, config blobs, JWTs. Supports explicit encode/decode modes and MIME line wrapping.

🔗 URL Codec

URL encode/decode with auto-detect — component, path, and full URI modes. UTF-8 aware with percent-encoding visualization.

🔍 Env Var Inspector

Look up, filter, and safely display environment variables on your desktop. PATH exploder splits entries per row. Secrets (API keys, tokens, passwords) are auto-masked.

📚 arXiv Paper Lookup

Look up academic papers by arXiv ID or keyword search — title, authors, year, abstract. Covers CS, ML, physics, math, and more. No API key required.

📰 RSS News Reader

Headlines from Hacker News, Reddit, dev.to, BBC, TechCrunch, or any RSS/Atom feed URL. Live updates in your spreadsheet cells.

🕳️ Pi-hole Stats

Live Pi-hole DNS blocking stats on your wallpaper — status, block %, query count, domains blocked, and client count. Custom host/TOKEN support.

🌐 HTTP Client (curl)

Postman-in-a-cell. Make HTTP requests (GET/POST/PUT/DELETE) and display responses, status codes, and headers directly in spreadsheet cells.

💓 HTTP Health Checker

Parallel HTTP endpoint health probes with latency, status codes, and self-signed cert support. Ideal for homelab service dashboards on your wallpaper.

⚙️ GitHub Actions Status

Live GitHub Actions workflow run statuses on your desktop wallpaper. Shows ✅❌🔄⏳⏸️🚫 status, workflow name, branch, and age. Supports public repos and private repos via GITHUB_TOKEN.

🎲 Dice Roller

Roll any dice notation right in your spreadsheet — 2d6+3, d20, 4d6kh3 (keep highest for DnD stats), Fudge/FATE dice, percentile. 💥 critical hit and 💀 fumble detection on d20.

📚 LeetCode Tracker

LeetCode right in your spreadsheet — today's daily challenge with difficulty and acceptance rate, problem lookup by number or slug, and user solve stats (Easy/Medium/Hard counts, global rank).

🔥 GitHub Streak

Track your GitHub contribution streak on your desktop wallpaper — current streak 🔥, longest streak, total contributions this year, today's count ✅, and a 14-day unicode sparkline. No API key needed.

🛸 ISS Tracker

Live International Space Station position — latitude, longitude, region, altitude (~408 km), speed (7.66 km/s) — plus all people currently in space, grouped by spacecraft (ISS & Tiangong). Uses open-notify.org, no API key.

📦 npm Package Info

Show npm package version, weekly downloads, license, and author info. Single package detail view or multi-package comparison table. Uses public npmjs.org API — no API key needed. Type npm: react or npm: react,vue,lodash.

🐍 PyPI Package Info

Show PyPI package version, license, author, Python requirement, release date, homepage, and summary. Single package detail view or multi-package comparison table. Uses the free pypi.org JSON API — no API key needed. Type pypi: requests or pypi: requests,flask,django.

🦀 Rust Crate Lookup

Look up Rust crates on crates.io — latest version, all-time downloads, recent downloads, description, homepage/repo link, and keywords. Search mode returns top 5 results. Type crates: tokio or crates: search async. Free crates.io API, no key required, 30-min cache.

🌍 CO₂ Monitor

Live atmospheric CO₂ from NOAA Mauna Loa Observatory — current ppm, pre-industrial baseline comparison (+54%!), year-over-year change, 7-day sparkline. co2: trend shows 30-day detail, co2: stats shows annual averages and records. Free NOAA data, no API key required.

📈 GitHub Trending

Live GitHub trending repositories by language. Shows repo name, star count, forks, language, and description in a grid. Type ghtrend: python, ghtrend: rust, or ghtrend: all. 30-minute cache, no API key required.

🌤️ Open-Meteo Weather

Live weather forecasts on your desktop wallpaper — temperature, feels-like, conditions (WMO emoji), wind speed/direction, humidity, precipitation, pressure. Uses Open-Meteo: free, no API key. Type weather: London, weather: Tokyo, JP, or weather: 48.85,2.35. 5-minute cache.

🔍 DNS Lookup

DNS record lookup for any domain — A, AAAA, MX, TXT, NS, CNAME, PTR records. Type dns: github.com (A records), dns: MX gmail.com (mail servers), dns: PTR 8.8.8.8 (reverse DNS), or dns: ALL example.com for all types at once. Uses system dig, 5-minute cache.

🔒 SSL Cert Checker

SSL certificate expiry checker for any domain. Shows 🟢/🟡/🔴 status, days until expiry, subject, issuer, and validity window. Type ssl: github.com or ssl: api.internal:8443 for custom ports. BCL SslStream — zero NuGet, 30-min cache.

🔍 WHOIS Lookup

WHOIS domain and IP lookup. Shows registrar, status, expiry with urgency indicators (🟡🔴), and nameservers. IP mode shows org, country, CIDR, abuse contact. whois: github.com · whois: 8.8.8.8. 25+ TLD server mappings, 1h cache, zero NuGet.

🛣️ Network Traceroute

Traceroute from your desktop wallpaper. Each hop shows RTT latency and reverse-DNS hostname (up to 30 hops, 3 probes/hop). tracert: github.com · tracert: 8.8.8.8. 5-min cache, BCL Ping, zero NuGet.

🔭 Route Tracer (mtr-style)

Network route analysis with per-hop RTT stats and packet loss — like mtr on your wallpaper. mtr: google.com (full route: hop#, IP, avg RTT, loss%), mtr: ping 8.8.8.8 (ping stats: min/avg/max RTT + loss%). BCL Ping, cross-platform, zero NuGet.

⚡ Network Speed Test

Measure download speed (Mbps) and HTTP latency (ms) from your desktop wallpaper. speed: (all), speed: download (CDN throughput), speed: latency (Cloudflare/Google/GitHub/Fastly). 🟢🟡🔴 indicators. BCL HttpClient, zero NuGet.

🕐 Epoch Converter

Unix timestamp converter — right on your desktop. epoch: now (current ts + UTC + ISO), epoch: 1700000000 (epoch→date with age), epoch: 2025-01-01 (date→epoch), epoch: diff t1 t2 (time diff), epoch: add <ts> 30d (duration math). Zero network, zero NuGet.

🎨 Color Converter

Color code converter and palette generator — right on your desktop. color: #ff6600 (hex→RGB/HSL/CMYK/name/WCAG), color: rgb(255,102,0), color: orange (CSS named), color: palette #3b82f6 (10-color harmony: complementary, analogous, triadic, tints, shades). ANSI swatches, 140+ CSS names. Zero network, zero NuGet.

🌐 Browser Compat (Can I Use)

Browser compatibility lookup for CSS, HTML, and JavaScript features via caniuse-db. Type caniuse: css-grid, caniuse: flexbox, or caniuse: webassembly to see support across Chrome, Firefox, Safari, Edge, Opera, Samsung, and iOS Safari. Shows global usage %, spec link, and per-browser support with ✅/🟡/❌ icons + version numbers. No API key. 1-hour cache.

Live stock & crypto quotes via Yahoo Finance — price, ▲▼ change, day/52W range, volume, market cap. stocks: AAPL (detail) or stocks: AAPL, MSFT, BTC-USD (comparison table). Supports stocks, ETFs, indices, crypto, forex. No API key, 60s cache, zero NuGet.

English dictionary right on your desktop. dict: serendipity → phonetics, parts of speech, definitions, usage examples. dict: syn happy (synonyms) · dict: ant brave (antonyms). Free dictionaryapi.dev, 1h cache, zero NuGet.

Ruby gem lookup and search via rubygems.org. Type gem: rails for version, total downloads, authors, license, Ruby requirement, homepage, and description. gem: search json parser returns top 5 matching gems with download counts and summaries. Free API, no key required, 30-min cache, zero NuGet.

Haskell package lookup from Hackage. Type hackage: aeson to see latest version, synopsis, author, category, license, and homepage. hackage: search json lists top matching packages. No API key required, 30-min cache, zero NuGet.

Java/JVM package lookup from Maven Central. Type mvn: org.springframework:spring-core to see latest version, packaging, publication date, and ready-to-paste Maven/Gradle dependency snippets. mvn: search logging returns top 8 matching artifacts. No API key required, 30-min cache, zero NuGet.

Git repository status in cells. git: status shows branch, modified/staged/untracked counts, and ahead/behind. git: log 5 shows recent commits. git: diff lists modified files. Also: git: branch, git: stash, git: remote. Uses git CLI, zero NuGet.