List of Callum Integrations

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

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    Greenhouse Reviews & Ratings

    Greenhouse

    Greenhouse Software

    The only hiring platform you’ll ever need
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    Company Website
    Company Website
    Greenhouse is the only hiring platform you’ll ever need. Their industry-leading, AI-powered software supports every stage of your hiring process – from sourcing to onboarding – helping you make the best hires, faster, every time. More than just an ATS, Greenhouse is a true hiring partner, empowering companies to reduce recruiting costs and hire top talent quickly, consistently and fairly. Today, more than 7,500 customers across diverse industry verticals and scaling goals use Greenhouse to help them hire for what’s next. With Greenhouse, organizations can cut recruiting costs and ensure every hire is the right hire. Their industry-leading, AI-powered software supports every stage of the hiring process, from sourcing to onboarding, empowering companies to hire top talent quickly, consistently and fairly – today and as their business grows. With a structured hiring approach at its core, Greenhouse makes it easy to define the role, requirements and attributes of a successful candidate before a job is posted, enabling internal alignment and more confident, data-driven decisions. Greenhouse Real Talent™ enhances this process by helping teams identify and prioritize real, qualified candidates while detecting fraud, spam and impersonation attempts.
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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, our 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 our premium offerings, or you may begin using our extensive range of free tools right away.
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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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