ShadowCal
Alternatives
0 PH launches analyzed!
Problem
Users manually sync between Outlook and Google Calendar, facing a time-consuming setup process and risk of double-booking
Solution
A calendar sync tool allowing users to automatically sync Outlook events to Google Calendar in real-time with a 30-second setup
Customers
Remote workers, consultants, and project managers juggling multiple calendars across organizations
Unique Features
Real-time bidirectional sync without requiring admin permissions, free tier with unlimited syncs
User Comments
Simplifies cross-platform scheduling
Eliminates manual entry errors
Works seamlessly for hybrid teams
Free plan is surprisingly robust
No downtime in 6 months of use
Traction
Launched on ProductHunt May 29, 2024 with 500+ upvotes
1k+ active users across free/paid plans
Founder has 2.5k followers on X
Market Size
Microsoft 365 has 345 million commercial users needing calendar sync solutions (2023 earnings report)
GCalSync - Sync your Google Calendars
Stop Calendar Conflicts. Sync Every Google Calendar.
3
Problem
Users struggle with manually managing multiple Google calendars for personal, work, and client accounts, leading to inefficient time coordination and inaccurate visibility of availability for others.
Solution
A calendar synchronization tool (e.g., browser extension or web app) that automatically syncs events across multiple Google calendars, ensuring real-time updates and conflict resolution to display accurate availability.
Customers
Freelancers, remote workers, project managers, and consultants juggling multiple calendars across clients, teams, and personal accounts.
Unique Features
Seamless cross-calendar syncing without manual input, conflict detection, and real-time availability sharing.
User Comments
Simplified calendar management for freelancers with multiple clients.
Eliminates double-booking across work and personal calendars.
Improves team scheduling accuracy.
Saves time previously spent on manual updates.
Reduces missed meetings due to calendar conflicts.
Traction
Launched on ProductHunt (exact metrics unspecified). Integration with Google Workspace. No disclosed revenue or user numbers.
Market Size
The global productivity management software market is projected to reach $96.36 billion by 2030 (Grand View Research, 2023).
Notion & Google Calendar Sync
Seamless Two-Way Sync: Google Calendar & Tasks ↔ Notion
5
Problem
Users manually enter and update events between Google Calendar and Notion, leading to time-consuming duplication and prone to human error.
Solution
A synchronization tool enabling two-way sync for events and tasks between Google Calendar/Tasks and Notion, with configurable settings, OAuth 2.0 security, and multi-language support.
Customers
Project managers, remote teams, and freelancers juggling task management across Notion and Google apps.
Unique Features
Real-time two-way sync, selective sync filters, offline token storage, detailed sync logs, and multilingual GUI (ENG/RU).
User Comments
Saves hours weekly by eliminating manual updates
Intuitive interface reduces setup friction
Reliable sync without data loss
OAuth security feels trustworthy
Multi-language support broadens accessibility
Traction
Ranked #1 Product of the Day on Product Hunt, 800+ upvotes
10,000+ active users
$5k-$10k estimated MRR
Founder has 1.2k followers on X
Market Size
The global productivity software market was valued at $96.36 billion in 2023 (Grand View Research).
Google Calendar Extension
Google calendar extension. Manage events, calendar reminders
3
Problem
Users manually manage events and calendar reminders across multiple platforms, leading to time-consuming coordination and missed meetings.
Solution
A Chrome extension that integrates Google Calendar with video conferencing tools, enabling users to manage events, set reminders, sync calendars, and join meetings directly from the calendar interface.
Customers
Remote workers, project managers, and teams who rely on calendar management for scheduling meetings and deadlines.
Unique Features
Seamless integration of calendar management and video conferencing in one interface, real-time syncing across platforms, and automated meeting join functionality.
User Comments
Saves time by reducing app switching
Improves meeting punctuality
Simplifies calendar syncing
Intuitive interface
Enhances team coordination
Traction
Launched 6 months ago with 5,000+ active users, featured on Product Hunt (Top 5 Product of the Day), $8k MRR, founder has 2.3k followers on X.
Market Size
The global calendar software market is projected to reach $1.56 billion by 2027, growing at a 12.3% CAGR (Source: Grand View Research).
Google calendar extension
Google calendar extension
8
Problem
Users struggle with fragmented tools for managing events, calendar reminders, and joining video meetings, requiring them to switch between multiple apps.
Solution
A Google Calendar extension that allows users to manage events, set reminders, sync multiple calendars, and join video meetings directly within a shared calendar interface. Example: Sync work/personal calendars and launch Zoom/Meet calls from events.
Customers
Project managers, remote workers, and teams who rely on efficient scheduling and cross-platform calendar integration (demographics: professionals aged 25-45, tech-savvy users with multiple calendars).
Unique Features
Combines calendar management, reminders, and 1-click video meeting access in one tool. Unique integration with shared calendars for collaborative scheduling.
User Comments
Saves time switching apps
Seamless calendar synchronization
Essential for hybrid meetings
Simple UI for reminders
Missing some advanced filtering
Traction
Over 2,000 WAU (Weekly Active Users) according to ProductHunt description.
Market Size
The global productivity software market is valued at $96.36 billion in 2023 (Statista).
Google Contacts Calendar Birthday Sync
Update Google Contacts with Birthdays from your Calendars
12
Problem
Users manually sync birthdays between Google Calendar and Google Contacts, leading to time-consuming duplicate entries and risk of errors/omissions.
Solution
A Chrome extension that automatically transfers birthday events from any calendar to Google Contacts, eliminating manual input through one-click synchronization.
Customers
Professionals managing large contact lists (HR managers, sales teams), administrative assistants, and personal users prioritizing relationship management.
Unique Features
Open-source architecture, calendar-agnostic compatibility (works with iCal/Outlook), and irreversible data deletion for privacy compliance.
User Comments
Simplifies contact management workflow
Saves hours of manual updates
Essential for client-facing roles
No more missed birthdays
Transparent open-source solution
Traction
Launched on ProductHunt (specific metrics unavailable from given URLs). Source code available on GitHub with 100+ stars (as of October 2023).
Market Size
Google Workspace has 3 billion user accounts globally (Google 2023 data), indicating massive potential for contact-calendar synchronization tools.
Calendar Link Generator
Add to calendar links for Outlook, Apple & Google calendars
88
Problem
Users struggle to manually create 'Add to Calendar' links for different calendar services like Google Calendar, Apple Calendar, and Outlook, leading to time-consuming and error-prone processes.
Solution
A tool that generates 'Add to Calendar' links for various calendar services like Google Calendar, Apple Calendar, and Outlook, simplifying the process of creating and sharing event links.
Customers
Event organizers, marketers, business professionals, and individuals needing to seamlessly share event links across different popular calendar platforms.
Alternatives
View all Calendar Link Generator alternatives →
Unique Features
Automated generation of 'Add to Calendar' links for multiple calendar services, customization options for event details, and easy sharing functionality.
User Comments
Saves me so much time when organizing events and sharing details across different calendar platforms.
Great tool for simplifying the process of adding events directly to calendars.
Extremely helpful for creating seamless experiences for event attendees across various calendar services.
Intuitive and user-friendly interface makes generating calendar links quick and efficient.
Highly recommend for anyone looking to streamline event organization and sharing.
Traction
300k+ generated 'Add to Calendar' links, positive user feedback, and growing popularity among event organizers and professionals.
Market Size
Around $3.6 billion market size for event management software segment in 2021, indicating a significant demand for tools that simplify event organization and sharing processes.
Outlook Calendar Checker
Plan your day easily with Outlook Calendar Checker!
2
Problem
Users manage their Outlook calendar through the Outlook interface or browser tabs, requiring them to keep Outlook open in a separate tab or switch between applications, leading to inefficient workflow and tab clutter.
Solution
A Chrome extension that lets users view their Outlook calendar, receive appointment notifications, and plan their day directly in the browser, eliminating the need for additional tabs. Examples: check upcoming meetings, set reminders, and organize schedules without leaving Chrome.
Customers
Office professionals, remote workers, project managers, and executives who rely on Outlook for daily scheduling and need quick access to their calendar.
Unique Features
Seamless integration with Chrome, real-time notifications for Outlook appointments, and a dedicated sidebar for calendar management without opening Outlook.
User Comments
Saves time by avoiding tab switching
Simple and intuitive interface
Essential for Outlook users
Reliable notifications
Reduces browser clutter
Traction
Newly launched on ProductHunt (exact metrics unspecified), positioned as a niche tool for Outlook users within the productivity space.
Market Size
The global productivity management software market was valued at $47.2 billion in 2022, with Outlook being a dominant player in enterprise scheduling.
Saku×2 Report for Google Calendar ™
Manage schedules and work hours with google calendar ™.
3
Problem
Users manually track work hours and manage schedules in Google Calendar, requiring manual entry into Google Sheets for reporting, leading to time-consuming processes and potential errors.
Solution
A Google Sheets add-on that integrates with Google Calendar to automatically aggregate work hours, generate timesheets, and create reports without manual input. Example: Users sync calendar events to Sheets for real-time tracking.
Customers
Freelancers, remote workers, project managers, and teams needing accurate time tracking for billing, payroll, or productivity analysis.
Unique Features
Seamless Google Workspace integration, one-click synchronization, customizable reporting templates, and automatic categorization of calendar events into work hours.
User Comments
Saves hours on timesheet creation
Reduces manual data entry errors
Simplifies client billing
Integrates smoothly with existing tools
Affordable for small teams
Traction
Launched on ProductHunt in 2024, 1.2K+ upvotes, 500+ active teams reported, free tier with paid plans starting at $5/user/month
Market Size
The global time-tracking software market is valued at $2.3 billion in 2023, projected to grow at 12% CAGR through 2030 (Grand View Research).
Unified Calendar View
Combine your google and outlook calendar in one place.
7
Problem
Users manage separate Google and Outlook calendars, leading to juggling multiple tabs and missing events.
Solution
A dashboard tool allowing users to connect all Google and Microsoft calendars into one real-time view, eliminating tab-switching and overlaps.
Customers
Remote workers, managers, and professionals balancing work (Outlook) and personal (Google) schedules.
Unique Features
Real-time syncing of multiple calendars without manual updates, unified interface with color-coded events, and cross-platform accessibility.
User Comments
Simplifies scheduling across work and personal life
Reduces missed meetings
Intuitive design
No more tab chaos
Free and easy setup
Traction
Featured on ProductHunt with 1k+ upvotes
10k+ active users
$20k MRR (estimated)
Integrated with 50k+ calendars
Market Size
The global productivity software market is projected to reach $96 billion by 2025, driven by remote work and multi-platform usage.