List of Callum Integrations

This is a list of platforms and tools that integrate with Callum. This list is updated as of November 2026.

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    HubSpot CRM Reviews & Ratings

    HubSpot CRM

    HubSpot

    Transform customer engagement with an all-in-one platform.
    HubSpot serves as an AI-driven customer platform that combines all the essential software, integrations, and tools required to unify your marketing, sales, and customer support efforts. By utilizing HubSpot’s connected platform, businesses can accelerate growth by prioritizing the most critical aspect of their operations: customer engagement. The HubSpot CRM goes beyond being merely a tool; it is the core of your business operations. This CRM solution empowers your team to cultivate stronger relationships with customers, fundamentally changing how you communicate with them. It provides a seamlessly integrated environment for sales, marketing, and customer service, enabling deep insights into your customer interactions. Everything is neatly organized within an intuitive dashboard that boosts your team's productivity. As your business evolves, the platform is built to scale, offering adaptable solutions that cater to your changing requirements. Additionally, HubSpot CRM features a robust free version filled with vital functionalities, making it an excellent option for forward-thinking businesses. This innovative CRM is set to redefine customer management; every customer interaction represents a chance for growth and improvement. You can schedule a demo to explore HubSpot's premium offerings, or you may begin using its extensive range of free tools right away.
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    Greenhouse Reviews & Ratings

    Greenhouse

    Greenhouse Software

    Where all of hiring happens
    Greenhouse is the Orchestrated Hiring Ecosystem, bringing employers and job seekers together in one place to make hiring work for everyone in the AI era. Thousands of companies, including Anthropic, HubSpot, and the NFL, run their hiring on Greenhouse, and millions of job seekers use MyGreenhouse to share their full professional story. Greenhouse connects sourcing, interviewing, scheduling, and the applicant tracking system in a single hiring ecosystem, with products such as Voice AI, Real Talent, and Dream Job. Orchestration runs on signal, not applications: who is real, who is looking now, and why they might be right for the role, with people accountable for every hiring decision. Consistently recognized as an industry leader, Greenhouse has earned recent honors including G2’s 2026 Best HR Software Products, Best Software Products, Global Software Companies, and Highest Satisfaction Products lists, as well as TIME’s Best Inventions of 2025 for Dream Job and HR Executive’s 2026 Top HR Products for Real Talent. The company has been named to Fortune Best Workplaces, Inc. Best Workplaces, Glassdoor’s Best Places to Work, Forbes Cloud 100, Deloitte Technology Fast 500, Crain’s Best Places to Work NYC, and Mogul’s Top 100 Workplaces for Diverse Representation.
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    Google Calendar Reviews & Ratings

    Google Calendar

    Google

    Revolutionize your scheduling with seamless organization and collaboration!
    Google Calendar is a comprehensive AI-powered scheduling and calendar management platform designed to help individuals, businesses, and teams organize their time, meetings, and daily responsibilities more effectively. As part of the Google Workspace ecosystem, the platform integrates directly with Gmail, Google Meet, Google Tasks, and other Workspace applications to create a connected productivity experience across devices and workflows. Gemini AI enhances scheduling by helping users quickly identify the best meeting times, add events from emails automatically, and simplify appointment coordination without extensive manual effort. Built-in appointment booking pages allow customers, clients, and coworkers to schedule meetings instantly while supporting advanced features such as multiple booking pages, automatic reminders, and payment collection through Stripe integrations. Google Calendar also helps users stay organized by syncing tasks directly from Google Tasks, displaying travel reservations and event details from Gmail, and enabling seamless collaboration through shared calendars and event scheduling tools. Teams can attach agendas, documents, and meeting resources directly to events while integrating Google Meet video conferencing links for smooth remote collaboration. The platform supports customizable working hours, working locations, multiple calendar views, and focus time scheduling to help users improve time management and reduce interruptions during important work sessions. Time Insights analytics provide visibility into how users spend their time and who they collaborate with most frequently, helping organizations improve scheduling efficiency and workload balance. Google Calendar automatically syncs across desktops, smartphones, tablets, smartwatches, and web browsers, ensuring users always have access to updated schedules from virtually anywhere.
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