Servers you connect to by URL — nothing to install. All 39 930 of them have a network address, which means their uptime can actually be measured: 33 068 answered our last handshake and 11 772 ask who you are first, most of them through a browser sign-in rather than a key. Checked every 15 minutes.
33 068 answering 11 772 ask who you are 97% on streamable-http 458 356 tools
WebAssembly magic-byte check, file discarded
Watts to horsepower, number discarded
Watts to horsepower
WAV RIFF check, file discarded
WCAG AA contrast for two hex colors
WCAG AAA contrast for two hex colors
WebM EBML check, file discarded
WebP magic-byte check, file discarded
UTC ISO week number
ISO week-year
UTC ISO week-date shape
Whitespace word count, text discarded
XID shape check
XML well-formed check, body discarded
XML tag count, body discarded
XXH3 hex length, input discarded
xxHash hex length, input discarded
xxHash hex, input discarded
YAML key count, body discarded
YAML validity, body discarded
Yards to meters
yEnc header shape, input discarded
Z85 charset, input discarded
ZIP magic-byte check, file discarded
US ZIP+4 shape, value discarded
Cache-Control token count, value discarded
CityHash hex length, input discarded
GraphQL SDL definition count, body discarded
HTML entity count, markup discarded
INI section count, values discarded
kebab-case charset, value discarded
Whether a token is an HTTP method
Pascal pressure band, number discarded
PascalCase charset, value discarded
SipHash hex length, input discarded
Unicode code-point length, text discarded
URL path segment count, query discarded
Uuencode begin-line shape, input discarded
YAML top-level key count, values discarded
ACAH header-name count, value discarded
ACAM method token count, value discarded
ACAO star-or-origin, value discarded
Accept-CH token count, value discarded
Accept-Encoding token count, value discarded
Accept media-range count, value discarded
acct: URI shape, value discarded
Adler-32 hex length, input discarded
Age seconds band, value discarded
Allow method token count, value discarded
alphanumeric run count, text discarded
Angstroms to nanometers, number discarded
Ansible hosts group count, body discarded
APK ZIP local-file count, bytes discarded
APKBUILD pkgname shape, body discarded
ARC-Seal tag count, value discarded
Arcminutes to degrees, number discarded
Arcseconds to degrees, number discarded
Argon2 hex length, input discarded
Argon2d encoded shape, input discarded
Argon2i encoded shape, input discarded
argon2id encoded hash shape, value discarded
arXiv id version shape, value discarded
arXiv URI id shape, value discarded
7-bit ASCII charset, value discarded
AsyncAPI channel count, body discarded
AT Protocol DID shape, value discarded
Atmospheres to PSI, number discarded
Astronomical units to kilometers, number discarded
Authentication-Info nextnonce shape, value discarded
:authority host:port shape, value discarded
Bar to atmospheres, number discarded
Barye to pascals, number discarded
Base36 id charset, value discarded
Base56 charset, input discarded
Base62 id charset, value discarded
Base91 charset, input discarded
Baudot 5-bit band, input discarded
Oil barrels to liters, number discarded
bcrypt $2 hash shape, value discarded
bcrypt radix64 shape, input discarded
Beaufort to m/s, number discarded
Bech32 id hrp shape, value discarded
Bencode integer/dict prefix, input discarded
BER identifier octet, bytes discarded
unsigned 64-bit decimal shape, value discarded
BIMI location URL shape, value discarded
BinHex colon-frame, input discarded
BinHex 4 colon frame, input discarded
BLAKE2b hex length, input discarded
BLAKE2s hex length, input discarded
blank-line count, text discarded
API Blueprint group count, body discarded
Braille pattern count, input discarded
Buddhist year band
Celsius to kelvin, number discarded
Cables to meters, number discarded
camelCase hump count, value discarded
UTC century number
Gregorian century band
CF-Connecting-IP shape, value discarded
Vendors publish one server each. Stripe, Notion, Figma, Slack, Linear — one entry apiece, no competing copies.
What does produce dozens of entries under one name is hosting: 75 servers sit on
clauxel.com, 66 on alpic.live, most of them someone's staging
environment that ended up in the registry. They are listed here like everything else,
with whatever status they actually have.