#opac

Live, measured metrics for the hashtag #opac from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.

hashtag.org network · sponsored

Own #opac

This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.

$2,449.80/ year · 4-character #name
Claim #opac — $2,449.80/yr→Buy on hashtag.space (web3)
card via hashtag.org · tokens via hashtag.space
0
Uses / 7 days
Mastodon
0
Accounts / 7 days
Mastodon
40
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 40
0.2
Avg reactions / post
Mastodon · last 40
—
Reddit posts / month
Reddit search
—
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · mastodon.social (Mastodon public tags API) · fetched 2026-10-27 12:30 UTC
0
10-21
0
10-22
0
10-23
0
10-24
0
10-25
0
10-26
0
10-27

0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.

Related hashtags

measured · mastodon.social (Mastodon public search API) · fetched 2026-10-27 12:30 UTC

No related tags with measured usage found for #opac.

Live pulse

measured · mastodon.social (Mastodon tag timeline) · fetched 2026-10-27 12:30 UTC

Everything below is measured over the latest 40 public posts (spanning ~28795 hours).

Posting hours (UTC) — busiest: 10:00

00:0012:0023:00

Languages: German (14) · Japanese (14) · English (8) · French (2) · Spanish (1)

Avg boosts / post: 0.7

Top of the latest posts

  • El módulo mOpac de Absys mejora la accesibilidad y usabilidad de las bibliotecas. Algunos ejemplos ➡️ https://www.baratz.es/mejora-la-accesibilidad-y-usabilidad-de-tu-biblioteca-con-el-modulo-mopac-de-absys/ Baratz forma parte del Clúster F

    FESABID@FESABID♥ 3↻ 12025-03-26 09:00 UTCView post →

  • *SearchOhio (The Ohio public library ILL consortium,) is being taken down from August 1st thru October 27th to upgrade it's OPAC and backend. OhioLINK (ditto but for Universities,) has been down since late May. #OPAC #SearchOhio #OhioLink #

    Skumring Tåke :ms_new_moon: :sparkletrans:@[email protected]♥ 1↻ 02025-08-01 13:30 UTCView post →

  • In a professional wrestler voice Today's the day. Search Ohio is goin' DOWN. #SearchOhio #Libraries #OPAC #TourmaLibrarian

    Skumring Tåke :ms_new_moon: :sparkletrans:@[email protected]♥ 1↻ 02025-08-01 13:28 UTCView post →

What “opac” means

Wikipedia

The online public access catalog (OPAC), now frequently synonymous with library catalog, is an online database of materials held by a library or group of libraries. Online catalogs have largely replaced the analog card catalogs previously used in libraries.

“Online public access catalog” on Wikipedia (CC BY-SA) →

#opac across platforms

every network with a public tag surface

Follow #opac straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.

X (Twitter) ↗Instagram ↗TikTok ↗Facebook ↗LinkedIn ↗YouTube ↗Threads ↗Bluesky ↗Mastodon ↗Reddit ↗Pinterest ↗Tumblr ↗

Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/opac