Shelf vs. TalkStack AI Comparison Chart

Guru is the AI Source of Truth for your company. It’s an AI knowledge platform that connects everything your teams know—across chats, docs, and apps—into one trusted layer that delivers cited, permission-aware answers everywhere you work. Guru automatically connects to tools like Slack, Teams, Google Drive, Confluence, Salesforce, Zendesk, and more, so employees and AI assistants can access verified knowledge directly in their workflow. Every answer shows where it came from, inherits existing permissions, and stays accurate automatically through built-in verification and expert updates. By connecting knowledge, making it accessible everywhere, and keeping it trustworthy automatically, Guru eliminates manual searches and ensures everyone—human or AI—works from the same truth.

Zendesk is an AI-powered service solution that’s easy to set up, use, and scale. It works out-of-the-box and adapts quickly, enabling businesses to move faster. Built on billions of CX interactions, Zendesk AI supports the whole service journey—from self-service to agents to admins—helping teams resolve issues faster and operate efficiently at scale. Zendesk empowers agents with tools, insights, and context to deliver personalized service on any channel—social messaging, phone, or email. It unifies personalized conversations, omnichannel case management, AI workflows, automation, and a Marketplace of 1200+ apps. Easy to implement, it frees teams from relying on IT or costly partners. Serving over 130K global brands in 30+ languages, Zendesk simplifies business complexity to create meaningful customer connections. Headquartered in San Francisco, it operates worldwide.

Pylon is an All-in-one B2B Support Platform for modern B2B businesses. We bring together everything a post-sales teams team needs including a ticketing system, B2B omnichannel integrations (Slack Connect, Microsoft Teams), modern chat widget, knowledge base, AI support bot, account management, customer marketing, and more. The support system for B2B companies. Allow your customers to get support wherever they'd like and enable multiple support tiers. Let AI draft support articles for you based on your issue resolutions. Use Triggers to codify business processes and workflows, and create Macros to streamline common responses. Broadcast new features, newsletters, and more to your customers and track engagement. A dedicated place to store, track, and organize all customer data. A shared view to give your stakeholders visibility into their team's active issues. If you use or want Slack for customer support, we should talk. Our Slack power users average 180+ customer channels

Axero is an award-winning intranet and employee experience platform. Hundreds of companies use Axero to communicate, collaborate, manage tasks, organize content and develop their company culture. Down with legacy intranets and document dumping grounds that are difficult to update and impossible to maintain. Our unified suite makes it easier than ever to launch modern intranets, employee hubs, enterprise portals & more. Connect your workforce in one integrated platform. Why Axero? We deliver an unmatched client experience. Your success is why we come to work every day. We have high standards and believe in providing the most valuable and pleasant experiences for our clients. Since our founding, Axero has led constant innovation in intranets, digital workplaces, and client services. Our professional services give you direct access to that expertise, to help you hit your goals and transform your business.

Haystack is a modern, easy-to-use intranet that connects everyone in your organization to the people, information, and resources they need to thrive. Automated multi-channel delivery ensures your most important messages cut through the noise and reach everyone at the right place and the right time. No-code customization and a modular design make it easy to keep key resources, knowledge, and organizational culture in the spotlight. Smart, integrated search empowers employees to spend less time searching for information, and more time making progress toward goals. A dynamic company directory and rich employee profiles make colleagues across the world feel like they’re right across the hall. With customizable iOS and Android mobile apps, Slack and Microsoft Teams integrations, and an intuitive design employees love, Haystack brings an outstanding digital employee experience to your entire workforce, no matter where their work takes them.

Interfacing’s Digital Twin Organization software provides transparency and Governance to improve Quality, Efficiency, and ensure Regulatory Compliance. Map, analyze, and automate processes, manage regulatory compliance, assess risks within a single platform! Interfacing’s digital twin solution (Enterprise Process Center - EPC) is an enterprise management system that helps companies digitalize processes to streamline operations, increase productivity, and continuously improve. Interfacing’s digital business platform – Rapid Application Development (RAD) Tools, with its Low-Code Development methodology will optimize usage of your technical resources and maximize transparency for ongoing improvement. Discover how our Low-Code Rapid Application Development module provides all the tools to create and deploy Custom, Scalable, Secure, and Mobile ready Applications in Days vs. Months!

Enterprise Bot, based in Switzerland, is a pioneer in Conversational AI, Process Automation, and Generative AI. With the trust of esteemed enterprise giants across industries like Generali, SIX, SBB, DHL, and SWICA, Enterprise Bot is revolutionizing both customer and employee experiences. Through its advanced integration with Large Language Models (LLM) such as ChatGPT and Llama 2, and its unique patent-pending DocBrain technology, the company delivers unparalleled personalization, active engagement, and omnichannel solutions across platforms like email, voice, and chat. Furthermore, Enterprise Bot integrates with existing core systems, such as SAP, CRMs, Confluence and more, and with its proprietary middleware, Blitzico, enables the AI to not only respond to queries but also take action to resolve them. This dedication to innovation in four main use case areas, Customer Support, Sales and Marketing, Knowledge Management and Digital Coworker, elevates both CX and employee productivity.

AddSearch goes beyond traditional site search with AI Answers and AI Conversations, enabling businesses to deliver direct, conversational, and context-aware responses. Combined with lightning-fast search and smart recommendations, AddSearch helps organizations create personalized, engaging digital experiences across websites, e-commerce, and applications. Trusted by nearly 2,000 global customers in Media, Telecommunications, Government, Education, and more. AddSearch offers enterprise-grade features including advanced GenAI capabilities, personalization, advanced analytics, and SLA up to 99.999%. It works with any CMS, supports crawler or API-based indexing, and provides full setup services to save developer time. Built to deliver powerful search with AI Answers and Conversations that elevate digital experiences for website visitors—without adding complexity.

Paper-based work is a soul-crushing, profit-sapping drag on individual, team, and company productivity. Paper literally smothers innovation, creating a competitive disadvantage. The Square 9 AI-powered intelligent information processing platform takes the paper out of work and makes it easier to get things done with digital workflows that automate many aspects of how you work today. We make it easy by extracting information from scans or PDFs, storing documents in a searchable archive, and building digital twins of your current processes through graphical workflows. Let’s end the challenge of lost or misplaced invoices, approval bottlenecks, and tedious data entry into multiple systems. Now, you can capture and extract key data from your documents through Artificial Intelligence, eliminate data entry, access documents in the office or from home, streamline your three-way matching process, and automate invoice approval routing.

Podium is a comprehensive AI-driven lead management and communication platform utilized by over 100,000 businesses seeking to enhance customer acquisition and retention. At the heart of Podium’s innovation is its AI employee, which ensures businesses respond to incoming leads instantly around the clock, dramatically improving conversion rates and revenue growth. The platform assists businesses in generating more customer reviews, improving their Google rankings, and unifying their lead channels into a single, manageable dashboard. Through the web and mobile applications, businesses can call and text customers, send payment links for quick transactions, and deploy bulk messaging campaigns to boost repeat sales. Podium’s powerful AI-driven automations seamlessly manage customer interactions across multiple communication platforms, providing accurate and timely responses that help drive sales.