API Tools
Get told when a new site picks a API tool.
Stackdar watches every launch we detect and sends you the ones that ship with anything in API, your competitors' tools included, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts workThe most-adopted api tool we track is Wikimedia (15,230 sites). We've detected 185 api tools across 44,246 public sites.
API tools we've detected
| Tool | 90‑day | Sites |
|---|---|---|
Wikimedia
site ↗
Hosts Wikipedia and other free knowledge projects.
|
15230 | |
Google APIs
site ↗
Google APIs umbrella domain (googleapis.com).
|
14764 | |
Pexels
site ↗
Free stock photo and video library, embedded directly via the Pexels CDN.
|
4938 | |
FlagCDN
site ↗
Free public CDN serving country and regional flag images in PNG, WebP, SVG, and JPEG formats.
|
1363 | |
Simple Icons
site ↗
Free open-source SVG icon library covering brand logos for thousands of popular companies.
|
1180 | |
DiceBear
site ↗
Free open-source avatar library that generates deterministic SVG avatars in dozens of artistic styles.
|
997 | |
|
Google Business Profile
site ↗
API.
|
933 | |
|
UI Avatars
site ↗
Free API that generates initials-based placeholder avatars on the fly.
|
776 | |
ipify
site ↗
Free public API for fetching the visitor IP address, often called from browser JavaScript.
|
672 | |
ExchangeRate-API
site ↗
Currency exchange rate data API (open.er-api.com)
|
634 | |
|
Kwai
site ↗
Short-form video network from Kuaishou, popular in Brazil and other emerging markets.
|
626 | |
|
GitHack
site ↗
rawcdn.githack.com: CDN for serving raw GitHub files
|
402 | |
|
Lorem Picsum
site ↗
Free placeholder image API for designers and developers.
|
320 | |
Microsoft Graph
site ↗
Microsoft 365 REST API gateway for identity, mail, calendar and files.
|
287 | |
|
QR Server
site ↗
Free QR code generation API (api.qrserver.com)
|
267 |
Showing top 15 of 185 api tools by adoption. 170 more not shown.
The StackScope API serves every api tool and the launches using each, filterable and exportable, from £15 a month.
Launches using API tools
| Launch | Launched | Score |
|---|---|---|
| Tvexplorer | Oct 16, 2026 | 5.0 |
| Squish | Oct 16, 2026 | 10.0 |
| GuestBuddy | Oct 16, 2026 | 9.1 |
| TechTwitter IO | Oct 16, 2026 | 10.0 |
| SpurQuality | Oct 16, 2026 | 6.7 |
| 99Tools | Oct 16, 2026 | 8.3 |
Often built with
Categories the api sites we track also commonly use: