Mangudäi

Convert GPS coordinates between decimal degrees, DMS, DDM, UTM, MGRS, Maidenhead and geohash, in bulk. Also measures geodesic distance, bearing and midpoint between two points, projects a destination point, and builds bounding boxes. Runs fully offline on WGS84, no API key needed.

Scrape Hacker News stories, comments, Ask HN, Show HN, and polls. Search by keyword, filter by points or comments, sort by relevance or date. Get title, url, author, points, comment count, and timestamps as clean JSON. No login, no API key.

Validate and parse IBAN, VAT, BIC and ISIN codes offline, no API key. Checks format and check digits, then returns a table with the type, country, compact and formatted form, and a reason for any code that fails. Runs on python-stdnum, so it stays fast and reliable.

Search the Internet Archive's 40M+ items, pull full item metadata and file lists, and query the Wayback Machine for URL snapshots. Books, audio, video, software, and archived pages on official archive.org APIs. No API key.

Scrape newly launched and trending startups from Launching Next. Get each startup's name, tagline, website, launch date, and tags as clean B2B leads or market-research data. Filter by category or keyword. Public data, no login or API key.

Scrape public Lemmy data from any instance without a login or API key. Turn a keyword, community, user, or feed into structured rows of posts, comments, communities and user profiles. Export to CSV, JSON or Excel for community monitoring, research and lead discovery.

Build a full loan or mortgage amortization schedule from an amount, rate, and term. Get one row per payment with principal, interest, and running balance. Supports extra payments, biweekly and other frequencies, and multiple loans. Offline, no API key. Export to CSV, Excel, or JSON.

Generate a moon phase calendar for any date range. Each day gets the phase name, an emoji, illumination percent, moon age and a flag for the exact new moon, quarter and full moon dates. Computed offline from astronomical formulas, so no API key and nothing to break.

Build a day by day lunar calendar for any date range and place. Get the moon phase, illumination, moon age, distance, exact new, first quarter, full, and last quarter times, plus optional moonrise and moonset. Offline and zero maintenance, no API key needed.

Estimate your one rep max from any set with seven proven formulas, rank a lift against strength standards by bodyweight, score totals with Wilks, DOTS and IPF GL, load the barbell and plan warmups. Pure offline math, no API key, one row per calculation.

Scrape public Nostr data from open relays with no login or API key. Turn any account's following or followers into a lead list with Lightning addresses, NIP-05 IDs and websites. Search notes by keyword, or pull profiles and posts by npub or NIP-05.

Scrape the Open VSX registry: the vendor-neutral extension marketplace behind VSCodium, Gitpod, Cursor and Windsurf. Get downloads, ratings, versions, categories, licenses, repositories and publisher info. Search, pull whole namespaces, or fetch specific extensions. No key, no login.

Search and export PHP and Composer package data from Packagist. Get download counts, GitHub stars, dependents, maintainers, latest version, license and dependencies for any package. No login or API key.

Official public holidays for 150+ countries and any year. Returns the date, weekday, holiday name and country, with optional localized names and regional holidays. Runs fully offline: no API key, no rate limits, no maintenance.

Scrape for-sale home listings from any Redfin city or ZIP code. Get price, beds, baths, sqft, lot size, year built, days on market, HOA, coordinates, MLS number and agent remarks. No login, no API key. Filter by price, size, type and freshness. Cheapest Redfin scraper on the store.

Calculate running pace, finish time and distance, build even or negative split tables, predict race times from 800 m to 50 km out of one result, and get VDOT training paces. Distances accept names like marathon or 10k. Pure offline math, no API key, no scraping.

Scrape SoundCloud tracks, artists, and playlists with play counts, likes, reposts, genre, ISRC, and full creator data. Search by keyword or fetch by URL. No login or API key.

No public Store description is available yet.

Calculate subnet masks, CIDR blocks and host ranges offline for IPv4 and IPv6. Get the netmask, wildcard mask, network and broadcast address, first and last usable host, and address counts. Split networks into subnets, list hosts, test if an IP is in range, or turn an IP range into CIDR blocks.

Calculate sunrise, sunset, solar noon, day length, golden hour, blue hour, and civil, nautical and astronomical twilight for any coordinates and date. Timezone is detected from each location. Pure offline computation, no API key, no sign up.

Convert any time across IANA time zones and get a world clock in one run. Each row gives the local time, UTC offset, DST status, zone abbreviation, weekday, and Unix timestamp. Fully offline, no API and no key, so it never breaks on a rate limit or a site change.

Convert any value between units of length, weight, temperature, volume, area, speed, time, data, pressure, energy, power, angle, and frequency. Give a value and a unit, get the result in one unit or every unit in that category. No API key, pure offline, always reliable.

Build targeted US healthcare provider lead lists from the official NPPES NPI Registry. Search doctors, dentists, nurses, clinics and practices by specialty and location. Get name, specialty, practice address, phone, license and organization decision-maker contacts. No API key.

Count working days between two dates for 150+ countries. Removes weekends and public holidays, then returns one row per date range with the working day total and the holidays inside it. Offline, no API key, nothing to break.