5 Best Open Source Sessions Alternatives
A curated collection of the 5 best open source and self-hosted alternatives to Sessions in 2026.
Looking for a free, privacy-friendly, or self-hosted replacement for Sessions in 2026? The top open-source alternative is Cal.com — Fully customizable scheduling software for meetings.
Other highly rated open-source Sessions alternatives include Rallly, Easy!Appointments and PostHog.
Fully customizable scheduling software for meetings
Cal.com is a fully customizable scheduling software designed for individuals, businesses, and developers. It simplifies appointment booking with cross-calendar sync, custom booking links, automated reminders, and built-in video conferencing. - Cross-calendar sync: Automatically checks availability across multiple calendars to prevent double bookings. - Custom booking links: Create short, memorable links for easy sharing (e.g., cal.com/yourname). - Automated reminders: Send SMS or email reminders to reduce no-shows. - Built-in video conferencing: Cal Video provides seamless in-house video meetings. - Payment integration: Monetize bookings with Stripe integration. - Privacy-first design: Prioritizes data protection and security. - Multi-language support: Available in 65+ languages for global accessibility. - Embeddable booking: Easily integrate booking pages into websites or apps. - Buffer and limits: Set daily/weekly/monthly booking limits and add buffers around events. Cal.com is open-source and can be self-hosted for full control over data and infrastructure. The project is built with modern web technologies and supports deployment on various cloud platforms or on-premise servers. Self-hosting documentation is available in the cal.diy repository.
Free group meeting scheduling without logins
Rallly is the fastest and easiest way to schedule group meetings. Create a poll with proposed times, share a link, and let participants vote without needing an account. The tool automatically adjusts times for different time zones and shows the best option at a glance. - Instant Poll Creation: Set up a meeting poll in under a minute with no account required - Time Zone Support: Automatically converts times to each participant's local time zone - No Login for Voters: Participants can vote without signing up - Free Plan: 99% of users use Rallly completely free with no participant limits - Pro Features: Optional paid subscription for branding, permanent polls, and email notifications - Privacy Focused: Open source with no ads, no data selling, and automatic deletion of inactive polls - Cross-Platform: Works on desktop and mobile with a clean, responsive interface Rallly is open source and can be self-hosted. The project is built with modern web technologies and offers comprehensive documentation for deployment. Self-hosting provides full control over data and privacy while maintaining all core functionality.
Self-hosted appointment scheduling software
Easy!Appointments is a self-hosted, open-source appointment scheduler designed for simplicity and flexibility. Whether you're a small business, healthcare provider, or large organization, it streamlines booking management with customizable workflows, automated reminders, and seamless third-party integrations. - Self-hosted & Open Source: Deploy on your own server for full control and data privacy. - Customizable Workflows: Adapt to any scheduling need with flexible configurations. - Automated Reminders: Send SMS or email notifications to reduce no-shows. - Payment Integration: Support for multiple payment gateways (Stripe, PayPal, etc.). - Multi-user Support: Manage multiple providers and services effortlessly. - Reports & Analytics: Track appointments, revenue, and client activity. - Third-party Integrations: Connect with CRM, email, and calendar tools. - Multi-language & Timezone Support: Serve global audiences with ease. - WordPress/Joomla/Drupal Plugins: Extend functionality to popular CMS platforms. - Docker Support: Easy deployment with pre-configured containers. - Tech Stack: PHP, MySQL, jQuery, Bootstrap. - Self-Hosting: Fully self-hosted with Docker, Apache/Nginx, and MySQL/PostgreSQL support. - Requirements: PHP 7.4+, MySQL 5.7+, Apache/Nginx, and a web server. - Documentation: Available at https://easyappointments.org/documentation. - Community Support: Active Discord, forums, and GitHub repository for troubleshooting.
Self-driving product analytics platform
PostHog is an all-in-one product analytics platform that transforms how teams understand and improve their products. By automatically diagnosing problems, fixing bugs, and generating pull requests, PostHog enables teams to work smarter and ship faster. - Automated Issue Detection: Identifies bugs and issues in your product automatically - AI-Powered Fixes: Generates pull requests to resolve detected problems - Context Warehouse: Centralized data warehouse for all product and customer data - Built-in Analytics Tools: Includes product analytics, web analytics, session replay, feature flags, experiments, surveys, and error tracking - AI Observability: Monitor and optimize AI model performance within your product - Self-Hosting Capabilities: Deploy PostHog on your own infrastructure - Slack Integration: Collaborate and triage issues directly from Slack - Managed Warehouse: Cloud-hosted data warehouse option available - No-Code A/B Testing: Run experiments without writing code - Heatmaps & Replay Vision: Visualize user interactions and behavior - CDP (Customer Data Platform): Unify customer data across sources - Traces & Endpoints: Monitor API performance and integrations PostHog is open-source and can be self-hosted on your own infrastructure. It supports deployment on various cloud providers and on-premises environments. The platform is built with Python and JavaScript, using PostgreSQL as its primary database. Comprehensive documentation is available for self-hosting configurations and best practices. View deployment options
Comprehensive web analytics platform offering full data ownership, privacy protection, and customizable insights for data-driven decision making.
Comprehensive web analytics platform offering full data ownership, privacy protection, and customizable insights for data-driven decision making.
About Sessions
Sessions.us is a privacy-focused session recording tool designed to help developers and UX researchers understand user behavior without compromising privacy.
Key Features of Sessions
- Privacy-first recording: Captures user sessions while ensuring GDPR compliance and data protection
- Heatmaps & analytics: Visual representations of user interactions and behavior patterns
- Session replay: Watch complete user journeys to identify pain points and opportunities
- Open-source core: Self-hostable solution with transparent codebase
- Lightweight implementation: Minimal impact on website performance
- Customizable data collection: Control what data is captured and stored
Tech / Self-Hosting
Sessions.us is designed for self-hosting, allowing organizations to maintain full control over their data. The tool can be deployed on any standard web server with Node.js support. Documentation for installation and configuration is available on the official website.