Technology answer
14,133,779
companies run it, 25.9% of 54,527,857 in the index. Landing 12 Sept 2026.
Hosts: 28,653,556 live hosts run it, of 191,809,695 hosts in the index, 14.9%. A host is a website, not a company. This is a web standard: it is present on the host and does not count towards a stack.
Companies, monthly, on the fixed panel of sites crawled since 2020of 54,527,857 in the indexlanding 12 Sept 2026
14,133,666 at Sept 26; 14,037,031 twelve months earlier, +96,635, +0.7% on the fixed panel; the series starts January 2021 because the panel is anchored at 31 Dec 2020
| Month | Companies | Observed on the panel |
|---|---|---|
| 2021-01 | 0 | 0 |
| 2021-02 | 0 | 0 |
| 2021-03 | 0 | 0 |
| 2021-04 | 0 | 0 |
| 2021-05 | 0 | 0 |
| 2021-06 | 0 | 0 |
| 2021-07 | 0 | 0 |
| 2021-08 | 0 | 0 |
| 2021-09 | 0 | 0 |
| 2021-10 | 0 | 0 |
| 2021-11 | 0 | 0 |
| 2021-12 | 0 | 0 |
| 2022-01 | 0 | 0 |
| 2022-02 | 0 | 0 |
| 2022-03 | 0 | 0 |
| 2022-04 | 0 | 0 |
| 2022-05 | 0 | 0 |
| 2022-06 | 0 | 0 |
| 2022-07 | 0 | 0 |
| 2022-08 | 0 | 0 |
| 2022-09 | 0 | 0 |
| 2022-10 | 0 | 0 |
| 2022-11 | 0 | 0 |
| 2022-12 | 0 | 0 |
| 2023-01 | 0 | 0 |
| 2023-02 | 0 | 0 |
| 2023-03 | 0 | 0 |
| 2023-04 | 0 | 0 |
| 2023-05 | 0 | 0 |
| 2023-06 | 0 | 0 |
| 2023-07 | 0 | 0 |
| 2023-08 | 0 | 0 |
| 2023-09 | 0 | 0 |
| 2023-10 | 0 | 0 |
| 2023-11 | 0 | 0 |
| 2023-12 | 0 | 0 |
| 2024-01 | 0 | 0 |
| 2024-02 | 0 | 0 |
| 2024-03 | 0 | 0 |
| 2024-04 | 0 | 0 |
| 2024-05 | 0 | 0 |
| 2024-06 | 0 | 0 |
| 2024-07 | 0 | 0 |
| 2024-08 | 13,002 | 1,903 |
| 2024-09 | 249,418 | 36,508 |
| 2024-10 | 1,073,310 | 157,104 |
| 2024-11 | 2,196,147 | 321,458 |
| 2024-12 | 3,309,344 | 484,400 |
| 2025-01 | 4,543,956 | 665,115 |
| 2025-02 | 5,744,386 | 840,826 |
| 2025-03 | 6,944,815 | 1,016,537 |
| 2025-04 | 8,169,088 | 1,195,738 |
| 2025-05 | 9,366,865 | 1,371,061 |
| 2025-06 | 10,589,096 | 1,549,964 |
| 2025-07 | 11,799,438 | 1,727,126 |
| 2025-08 | 13,007,800 | 1,903,998 |
| 2025-09 | 14,037,031 | 2,054,650 |
| 2025-10 | 14,841,536 | 2,172,408 |
| 2025-11 | 15,058,566 | 2,204,176 |
| 2025-12 | 14,976,649 | 2,192,185 |
| 2026-01 | 14,909,842 | 2,182,407 |
| 2026-02 | 14,853,412 | 2,174,147 |
| 2026-03 | 14,873,850 | 2,177,138 |
| 2026-04 | 14,812,872 | 2,168,213 |
| 2026-05 | 14,712,629 | 2,153,540 |
| 2026-06 | 14,626,782 | 2,140,974 |
| 2026-07 | 14,486,536 | 2,120,446 |
| 2026-08 | 14,330,547 | 2,097,613 |
| 2026-09 | 14,133,666 | 2,068,795 |
Shares of the same 14,133,779each row a different wholelanding 12 Sept 2026
Three wholes, three shares of one count: a share travels with its whole, never alone. Against the last of them, Really Simple Discovery is rank 2 of 3 technologies in Syndication and discovery formats.
Open as a segment
14,133,779 companies; add a country, a sector or a band on the segment page. Counting is free.
As recorded in the cataloguetaxonomy release tax-2026.10last discovered 10 Sept 2026
A web standard for advertising service endpoints such as blog APIs.
Really Simple Discovery (RSD) defines a way for sites to expose metadata about remote editing and XML-RPC endpoints. It is used by blogging and CMS tools to auto-discover publishing APIs.
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