ACID21's tech stack
What does ACID21 use?
ACID21 (acid21.com) uses at least 18 tools we can see from public records, including Exclaimer for email and documents, HubSpot for sales, HubSpot CMS for its website and UptimeRobot for monitoring. Last checked .
- Industry
- Software
- Size
- 11–50 employees
- Based in
- Berlin Kreuzberg, Germany
- Founded
- 2001
- Company page
- Tools found
- 18
- Categories
- 12
- Layers
- 5 of 5
- Last checked
- Nov 2026
ACID21's stack, layer by layer
Of 18 tools, 7 came from website code, 5 from email records, 3 from custom domain and 3 from other records. 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
1 tool, where the bytes are served from
Application
1 tool, what the product is built with
Media & UI
Data & Observability
3 tools, what they measure and store
Monitoring
Go-to-market
7 tools, how they find and keep customers
Website & CMS
Ads & Pixels
Sales & CRM
Company Ops
6 tools, what the team runs on day to day
Email Delivery
Workspace
Dev Tools
Security & Compliance
Companies like ACID21 also use
Tools common among companies with a similar stack that we haven't found at ACID21.
Companies with a stack like ACID21's
Ranked by shared tools, with rare tools counting more.
KrippsSoftware · 11–50 people1in common
Echopark Produktionsgesellschaft mbHMarketing and Advertising · 11–50 people3in common
Thomas Treude GmbHConstruction · 11–50 people5in common
AOE Group GmbHInternet · 11–50 people6in common
SCHÜRER IT GmbHIT Services · 11–50 people3in common
S3 AdvertisingMarketing and Advertising · 11–50 people3in common
Acryl Möbel Nach Maß Vertriebs UgRetail · 11–50 people2in common
NXTGNResearch · 11–50 people4in common
More Software companies
Other Software companies we've checked.
ACID21 tech stack FAQ
What tools does ACID21 use?
As of November 2026, runsonwhat has found 18 tools at ACID21 (acid21.com) in public records. Edge & Hosting: Amazon Route 53. Application: GSAP. Data & Observability: Google Analytics, Google Tag Manager and UptimeRobot. Go-to-market: Google Ads, LinkedIn Insight Tag and Mailchimp. Company Ops: Microsoft 365, SendGrid and Atlassian. Last checked November 5, 2026.
What CRM does ACID21 use?
ACID21 uses HubSpot for its CRM, alongside Calendly, according to runsonwhat (November 2026). runsonwhat found HubSpot through a subdomain that points at HubSpot and email records. HubSpot is used by 97,622 companies runsonwhat tracks.
What email provider does ACID21 use?
ACID21 uses Microsoft 365 for email and office software, alongside Exclaimer, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and a DNS verification record. Microsoft 365 is used by 734,157 companies runsonwhat tracks.
What analytics tools does ACID21 use?
ACID21 uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on acid21.com. Google Analytics is used by 903,921 companies runsonwhat tracks.
What is ACID21's website built with?
ACID21 uses HubSpot CMS for its website, according to runsonwhat (November 2026). runsonwhat found HubSpot CMS through a subdomain that points at HubSpot CMS. HubSpot CMS is used by 34,561 companies runsonwhat tracks.
What marketing software does ACID21 use?
ACID21 uses Mailchimp for marketing, according to runsonwhat (November 2026). runsonwhat found Mailchimp through email records that authorize Mailchimp. Mailchimp is used by 119,044 companies runsonwhat tracks.
Does ACID21 use Google Ads?
Yes. runsonwhat found Google Ads at ACID21 through Google Ads code on acid21.com. Google Ads is a Ads & Pixels tool used by 540,570 companies runsonwhat tracks.
Which companies have a tech stack similar to ACID21's?
The companies with the stacks most like ACID21's are Kripps, Echopark Produktionsgesellschaft mbH, Thomas Treude and AOE Group, according to runsonwhat (November 2026). Each shares 1 to 6 tools with ACID21, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.
How does runsonwhat know what ACID21 uses?
runsonwhat reads public records only. Of the 18 tools at ACID21, 7 were found through code on acid21.com, 5 through email records, 3 through DNS records and 3 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and acid21.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.