Real-time error monitoring and debugging platform.
3,787 sites
3,755 found by StackScope, 32 via launch platforms
- StackScope Wider Web 3,600
- StackScope Discovery (Indie) 155
- Product Hunt 25
- Hacker News 5
- PeerPush 1
- Other 1
Rollbar appeared on about 1,600 new sites in the last 30 days.
These figures cover websites that went live since April 2026, not the web as a whole.
Get told when a new site ships with Rollbar.
1,583 new sites with Rollbar first seen in the last 30 days.
Stackdar watches every launch we detect and sends you the ones using Rollbar, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts workShare of new sites using Rollbar
Each dot is one launch day. Line is the 7-day rolling average; weekly averages before July 2026.
The shaded areas were measured against a different set of sites, so the line can step there without Rollbar itself changing.
Coverage details
Before the dashed line where the dots begin, the line is a weekly average. After it, the last 90 days are shown one day at a time.
Grey: before 8 July 2026, we only tracked launches from launch platforms. From that date we crawl the wider web as well.
Amber: 8 July to 10 September 2026, before we improved our infrastructure to index new sites much sooner, often on the day they go live. Sites found that early often haven't finished setting up, so anything usually added after launch reads lower from 10 September. We record each site as it was when we found it.
The share is a proportion of whatever we were tracking at the time. For a single continuous measure, switch to launch platforms.
What kind of sites use Rollbar
1,012 sites with a known type, all time
Domain endings using Rollbar
3,782 sites, all time
- .com 65.2%
- .fr 9.2%
- .store 5.1%
- .online 3.1%
- .ua 3.1%
- .co 1.8%
- .org 1.6%
- .io 1.6%
- .uk 1.2%
- .net 1.1%
- .ca 1.1%
- .site 0.8%
- .us 0.6%
- .in 0.5%
- .ch 0.4%
Country
Country likely for 689 of 3,787 sites (18.2%), all time.
How we know
Country comes from what each site says about itself, such as a company registration, legal terms or a phone number, not just its domain ending. Too few sites state their country plainly for the usual count, so this one also counts single signals: a country domain ending, a phone number (for North America, its area code), a location the site declares in its own page metadata, or a country-specific vendor stack and the page language where they agree and nothing contradicts them. Read these as likely rather than certain.
-
France 49.6%
-
Ukraine 17.1%
-
United States 8.0%
-
United Kingdom 5.1%
-
Canada 4.4%
-
India 2.3%
-
Switzerland 1.9%
-
Spain 1.6%
-
Australia 1.3%
-
Netherlands 1.2%
-
Indonesia 1.0%
-
New Zealand 0.9%
-
Germany 0.6%
-
Japan 0.6%
-
Belgium 0.4%
Green hosting
32 checked sites since Apr 2026.
What this means
The share whose web host The Green Web Foundation lists as running on green energy, against the average for every new site we checked.
- Rollbar 47%
- Average 47%
Error Tracking leaders
| Tool | % of sitesall time | % of categoryall time | ||
|---|---|---|---|---|
| #1 | – |
|
4.7% | 96.8% |
| #2 | – |
|
0.1% | 2.0% |
| #3 | – |
|
0.1% | 1.3% |
| #4 | – |
|
<0.1% | 0.9% |
| #5 | ▼1 |
|
<0.1% | 0.2% |
Percentages show all-time adoption across the new sites we track: the share of all of them, and of the sites using any Error Tracking tool.The most common alternatives to Rollbar on new websites are Datadog and Bugsnag. All 34 in Error Tracking →
Recent launches using Rollbar
187 of the 3,787 sites using Rollbar are product launches we list individually. The other 3,600 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. They are included in the StackScope API and in Stackdar alerts. How StackScope Discovery works
Showing the most recent 12 of 187.
The StackScope API serves all 3,787 sites using Rollbar, filterable and exportable, from £15 a month.