Checked 28 Oct 2026 · Sources · All comparisons
StackShare alternative
StackShare and Tellstack answer different questions. StackShare is where developers share and discuss the tools their companies chose. Tellstack reads what a website actually runs, from the outside.
Get a free keySide by side
| Feature | Tellstack | StackShare |
|---|---|---|
| What it is | An API that names the technology behind any website, with the evidence | “Discover and share technology stacks from companies around the world” |
| Where the data comes from | Our crawler: headers, cookies, scripts, meta tags, DNS and certificates | Stacks that companies and developers submit, with votes and pros and cons |
| Price | Free for 100 lookups a month; £49 for 10,000 | Browsing is public; no pricing page |
| Look up any domain | Yes, by API, one at a time or in bulk | No domain lookup API documented |
| Covers | Front-end, CMS, hosting, analytics, email and DNS providers a site exposes | Back-end and internal tools too, when a company lists them |
| Scale | 7,647 technologies; a young index | “1M+ Tech Stacks”, “100K+ Companies”, “10M+ Monthly Developers”, on its about page |
| Developer tools | REST API, OpenAPI 3.1 spec, webhooks | A beta CLI that scans your own codebase and posts your stack |
Where StackShare is stronger
- Back-end, database and internal tools that never show on a website, when a company has shared them.
- Why teams chose a tool: comparisons, pros and cons, and stack decisions.
- A large developer community, by its own figures.
Where Tellstack fits
- Any website, whether or not anyone submitted its stack.
- From code: single lookups, bulk jobs of up to 10,000 domains, lists and change webhooks.
- What a site runs now, rescanned monthly, with the evidence.
Sources
Read on 28 Oct 2026.
- stackshare.io: what it is
- stackshare.io/about: community figures
- stackshare.io/docs and CLI scanning
StackShare is a trademark of its owner. Tellstack is made by Onibaku and isn’t affiliated with or endorsed by StackShare. Spot something out of date? Email admin@onibaku.co.uk and we’ll correct it.