Knock Knock vs Starnus
Side-by-side comparison of features, pros & cons, pricing, and community votes (2026).
🏆 Starnus leads with 579 upvotes

One AI sales brain. Website. Phones. CRM. All of it.
Knock Knock, now reimagined as NOX, is an all-in-one AI-powered sales platform designed to streamline customer engagement across multiple channels. It acts as a central brain that integrates website interactions, phone calls, inbound inquiries, outbound outreach, and CRM data into a unified system. NOX intelligently tracks visitors, reads live CRM updates, handles chats and calls, books meetings, and qualifies leads in real-time, enabling sales teams to focus on high-value prospects. Its ability to function seamlessly across various touchpoints and automate routine tasks makes it ideal for sales teams seeking to increase efficiency and conversion rates. What sets NOX apart is its comprehensive AI-driven approach that acts as a virtual growth officer, providing daily briefs and instant lead connections, thus transforming traditional sales workflows into a highly coordinated, intelligent process.
Pros
- Centralized AI-driven sales intelligence across multiple channels
- Automates lead qualification, booking, and customer engagement
- Provides real-time visitor insights and live CRM integration
- Works as a virtual growth officer, offering daily summaries
- Reduces manual workload for sales teams
Cons
- Limited user reviews and adoption data as it is a relatively new tool
- Potential learning curve for setup and integration
- Pricing details are not clearly disclosed, which may affect budgeting
Best for
- • Automating lead qualification and routing from website visits
- • Handling inbound chat and phone inquiries efficiently
- • Scheduling and booking meetings automatically
- • Real-time CRM updates during customer interactions
Pricing: Likely operates on a subscription-based model, possibly with tiered plans to accommodate different business sizes, but specific pricing details are not publicly available at this time.

Find and reach your next customers on autopilot
Starnus is an all-in-one outbound sales and marketing automation platform designed for founders and B2B teams aiming to streamline their customer acquisition process. By leveraging simple prompts, users can define their ideal customer profile (ICP), identify lookalike prospects, enrich data with business and contact information, craft personalized outreach messages, and monitor responses—all within a single, integrated platform. Its user-friendly interface simplifies complex outreach workflows, making it accessible even for teams with limited technical expertise. What sets Starnus apart is its end-to-end approach, combining prospecting, data enrichment, messaging, and tracking in one seamless environment—saving time and boosting outreach efficiency. With a growing community and over 579 votes on Product Hunt, it clearly resonates with sales and marketing teams looking for a smart, automated solution to scale their customer engagement efforts.
Pros
- All-in-one platform integrating prospecting, outreach, and tracking
- User-friendly interface with simple prompts for easy operation
- Automated data enrichment with business and contact info
- Personalized outreach generation to improve response rates
- End-to-end solution reducing the need for multiple tools
Cons
- Potential limitations in customization for advanced users
- Pricing details are unclear; may be costly for small teams
- Dependent on data accuracy and availability for optimal results
Best for
- • Automating outbound sales campaigns for B2B startups
- • Building targeted prospect lists based on ideal customer profiles
- • Enriching prospect data to improve outreach quality
- • Generating personalized email sequences at scale
Pricing: Likely operates on a subscription-based model with tiered plans, possibly offering a free trial or freemium features. Exact pricing details are not publicly confirmed but may start at affordable monthly rates for small teams, increasing with additional features or contacts.