The Tech Stack filter targets companies based on the specific software they use. Each category has a dropdown where you can select one or more tools - Prospi then returns only companies that have that technology in their stack.
Tech Stack Categories
The filter is organized by software category. You can filter by any combination of these:
CRM - Customer relationship management tools (e.g. Salesforce, HubSpot, Pipedrive)
Marketing Automation - Email marketing and automation platforms (e.g. Marketo, ActiveCampaign, Klaviyo)
Sales Automation - Sales engagement and sequencing tools (e.g. Outreach, Salesloft, Apollo)
Analytics - Web and product analytics platforms (e.g. Google Analytics, Mixpanel, Amplitude)
CMS - Content management systems (e.g. WordPress, Webflow, Contentful)
Cloud Provider - Cloud infrastructure (e.g. AWS, Google Cloud, Azure)
Development / DB - Development frameworks and databases (e.g. React, PostgreSQL, MongoDB)
E-Commerce - Online store platforms (e.g. Shopify, WooCommerce, Magento)
ERP - Enterprise resource planning systems (e.g. SAP, NetSuite, Oracle)
Email Hosting - Email infrastructure providers (e.g. Google Workspace, Microsoft 365)
Email Security - Email security and filtering solutions (e.g. Proofpoint, Mimecast)
App Security - Application security tools (e.g. Okta, Auth0, Snyk)
Cloud Security - Cloud security and compliance platforms (e.g. Wiz, Lacework, Prisma Cloud)
ABM - Account-based marketing platforms (e.g. Demandbase, 6sense, Terminus)
Conversation Intelligence - Call recording and sales intelligence tools (e.g. Gong, Chorus, Otter)
How to Use It
Open Lead Finder and go to the Growth & Signals section
Click on Tech Stack
Open the dropdown for the relevant category and select a specific tool
Add filters from multiple categories to narrow further
When to Use It
Integration plays: Target companies already using a platform your product integrates with (e.g. HubSpot users if you sell a HubSpot add-on)
Competitive displacement: Find companies using a competitor and pitch the switch
Budget signals: Salesforce or Marketo users have demonstrated willingness to invest in sales and marketing tools
E-commerce targeting: Filter by Shopify or WooCommerce to find online stores
Security-conscious companies: Companies using Email Security + App Security tools prioritize protection and have budget for it
Tips
Tech stack data is detected from public signals (website code, job postings, etc.) - some tools leave no detectable footprint and may not appear
Reference the tool in your email copy: "Since you’re on HubSpot..." immediately makes your message more relevant
You do not need to fill in all categories - leave any category blank to ignore it