Sleek's tech stack
What does Sleek use?
Sleek (onsleek.com) uses at least 9 tools we can see from public records, including Render for hosting, Google Workspace for email and documents, Customer.io for marketing and Cloudflare for content delivery. Last checked .
“Browser automation for businesses.”
- Industry
- B2B
- Size
- 1–10 employees
- Based in
- Toronto, Canada
- Founded
- 2021
- Company page
- Tools found
- 9
- Categories
- 6
- Layers
- 3 of 5
- Last checked
- Oct 2026
Sleek's stack, layer by layer
Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.
Edge & Hosting
3 tools, where the bytes are served from
Go-to-market
3 tools, how they find and keep customers
Company Ops
3 tools, what the team runs on day to day
Email Delivery
Workspace
Companies like Sleek also use
Tools common among companies with a similar stack that we haven't found at Sleek.
Companies with a stack like Sleek's
Ranked by shared tools, with rare tools counting more.
Emerge CareerEducation · 1–10 people5in common
Xweatherxweather.com6in common
Clear Labsclearlabs.com3in common
ExplorexConsumer · 51–200 people4in common
EurocampLeisure, Travel & Tourism · 201–1,000 people5in common
OrngeHealthcare · 201–1,000 people3in common
Jeep Jamboree USAResearch · 11–50 people2in common
AmoMamaOnline Media · 201–1,000 people4in common
More B2B companies
Other B2B companies we've checked.
Sleek tech stack FAQ
What tools does Sleek use?
As of October 2026, runsonwhat has found 9 tools at Sleek (onsleek.com) in public records. Edge & Hosting: Cloudflare, Amazon Route 53 and Render. Go-to-market: Customer.io and TinyURL. Company Ops: Google Workspace, Amazon SES and Postmark. Last checked October 20, 2026.
What cloud does Sleek run on?
Sleek uses Render for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Render through a subdomain that points at Render and code on onsleek.com. Render is used by 2,421 companies runsonwhat tracks.
What email provider does Sleek use?
Sleek uses Google Workspace for email and office software, according to runsonwhat (October 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace. Google Workspace is used by 403,669 companies runsonwhat tracks.
What marketing software does Sleek use?
Sleek uses Customer.io for marketing, alongside TinyURL, according to runsonwhat (October 2026). runsonwhat found Customer.io through a subdomain that points at Customer.io. Customer.io is used by 1,852 companies runsonwhat tracks.
Does Sleek use Cloudflare?
Yes. runsonwhat found Cloudflare at Sleek through Cloudflare code on onsleek.com. Cloudflare is a CDN & Edge tool used by 704,984 companies runsonwhat tracks.
Which companies have a tech stack similar to Sleek's?
The companies with the stacks most like Sleek's are Emerge Career, Xweather, Clear Labs and Explorex, according to runsonwhat (October 2026). Each shares 3 to 6 tools with Sleek, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.
How does runsonwhat know what Sleek uses?
runsonwhat reads public records only. Of the 9 tools at Sleek, 3 were found through email records, 3 through subdomains that point at the vendor, 2 through DNS records and 1 through code on onsleek.com. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and onsleek.com about monthly.
We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.